case study consulting frameworks

Top 10 Case Interview Frameworks: Beginner Mistakes

“Which framework to use?” is probably among the most common questions popping up in a candidate’s mind when confronting a case.

This definitive guide will not only answer that question by introducing a few common frameworks, but also tell you HOW to use those frameworks more effectively during case interviews , and what pitfalls you should be aware of.

Table of Contents

Case interview frameworks – Overview

What are case interview frameworks.

Case interview frameworks are templates used to break down and solve business problems in case interviews. A framework can be off-the-shelf or highly customized for specific cases; it can also be tailored for certain functions/industries, or versatile enough for general problem-solving.

Common case interview frameworks include:

• Profitability Framework
• Business Situation Framework
• McKinsey M&A Framework
• 4P and 7P Frameworks
• Porter Five Forces Model

External vs Internal

Qualitative vs quantitative.

• Cost vs Benefits
• 2×2 Matrix (e.g.: BCG Growth-Share Matrix)

SWOT Analysis

All of these frameworks will be discussed later in this article.

During a case interview, you use consulting frameworks to break down the problem into smaller pieces through an issue tree and test each branch to see if the root-cause is in there. If a branch indeed contains the root-cause, you break it down further. Rinse and repeat until the root-cause is identified.

The big part of problem solving is about breaking down the problem in almost every step of the case.

What should I keep in mind when using consulting frameworks?

Templates should be treated as guidelines, and not strict rules . The same applies to case interview frameworks.

In the past, case interviews were much more predictable, and frameworks were more applicable. However, nowadays, case interviews are more similar to real business problems, where frameworks need a lot of customizations (you’ll see this word repeated a lot in this article) to be useful.

In fact, the whole consulting industry exists on the basis that consultants can customize theory to real, difficult business situations and produce positive results; nobody pays hundreds of thousands of dollars for them to recite a textbook – any college freshman can do as much.

That’s why in my Case Interview End-to-End Secrets Program , I don’t teach candidates to use frameworks – instead, the focus in on the fundamentals of case interview (problem-solving and business intuition) as well as the tips and techniques for instant performance improvement.

How can I use consulting frameworks effectively?

Here’s a problem with case interview beginners – they tend to go straight for the frameworks, before even knowing the basic mechanisms and principles of case interviews.

If you are one of those beginners, you must first grasp the basics of case interviews – the fundamentals of case interview problem-solving, the issue tree, and the MECE principle. I have written extensive, separate guides on these topics, but for starters, I advice you to read this Case Interview 101 comprehensive guide. 

Busting case interview framework myths

Myth 1: “the more frameworks i know, the better”.

Before we proceed with the popular frameworks in consulting and case interviews, here are four huge myths about frameworks you should steer clear of.

Spend your time learning to draw customized frameworks/ issue trees instead. Case interviews are getting progressively more realistic and less conforming to specific frameworks, so trying to memorize dozens of frameworks is of no use.

Additionally, you should attend to the qualitative side of things, to deeply absorb each framework and its use; skimming the surface will come back to bite you later.

Myth 2: “There must be a framework out there that fits this case”

Ready-made frameworks CANNOT cover all kinds of situations. Even regarding the ones covered, existing frameworks are often “okay-fit”, but not perfectly fit.

Just create a framework/issue tree yourself. Nobody deducts your points for not using a ready-made tool, they even give you points if you can customize it.

Myth 3: “The fancier the framework, the more impressed the interviewer”

You are definitely not wooing anyone by being fancy-schmancy here. Nobody cares about your shiny frame if it does not fit with the picture.

Consultants are very practical and result-oriented people ; what impresses them are candidates who really know what they are talking about, and actually produce good results.

What’s worse is that you also run the risk of appearing superficial; it’s not difficult for consultants with years of experience in the field to fully expose your bluffing. If that happens you may as well say goodbye to your chance of getting hired.

Myth 4: “Knowledge of frameworks is irrelevant in interviewer-led cases”

The assumption underlying this myth is that in interviewer-led cases , the candidate is not the driver of the case, so he or she does not need to actively break down the problem.

This cannot be further from the truth. Many questions in interviewer-led cases are about frameworks/issue trees (“What factors would you consider to solve this problem?”).

Even with other question types you still need to structure answers like a mini-case. Appropriate knowledge of frameworks, as such, is still a MUST.

Five common case interview frameworks

Profitability framework.

Profitability is the most common problem type in case interviews – that means the Profitability Framework is the first one to master for every prospective consultant. You have to absolutely nail it every time, there’s no way around it.

In case interviews, the Profitability Framework is used to mathematically break down the problem, before switching to more qualitative frameworks to devise solutions.

Most of the time, the framework looks like this:

What’s so good about it?

• Firstly, the Profitability Framework is a surefire way to draw a structured issue tree , as the framework is fundamentally MECE.
• Secondly, this framework is grounded in a simple mathematical basis – there’s no confusing qualitative concept to get lost in; heck, “revenues minus costs equal profits” is common sense. That’s why the Profitability Framework may as well be the easiest framework ever devised by humankind (or consultant-kind).

Are there any shortcomings I should be aware of?

• The Profitability Framework is generic; it may not reflect the nuances within the business enough to draw insightful conclusions. In businesses with wide price ranges, for example, just the total sales volume and average unit price do not tell you much.
• To extract more insightful information, either drill down quantitatively by introducing revenue/cost components not expressed in the basic framework (e.g.: revenue by product), or combine it with a qualitative framework.

Business situation framework

This is an extremely versatile template you can use in nearly every case, so make sure to learn it well. It’s not even a “should”, but a “must”.

In my video , I referred to the Business Situation Framework by the more tell-tale “3C & P”, based on it being derived from the famous 3C Framework. These four letters stand for “Company, Customers, Competitors, Products” – areas that the framework analyzes to yield solutions.

• The one big advantage of the Business Situation Framework is its comprehensiveness – covering four crucial internal and external factors in business strategy.
• This framework is quite flexible – you can use it as a template to draw customized issue trees for all kinds of cases. In our video, I demonstrated this by applying it to solve an HR problem.
• The very same comprehensiveness making the Business Situation Framework flexible, also makes it generic, hence the need for extensive modifications; in many cases (the one in our video, for example), not all four components are relevant.
• It is not a beginner-friendly framework – it does not explicitly state which factors to consider under each main branch; newbies often end up in awkward situations, not knowing what to do next and thinking in a bottom-up manner.

How do you avoid that situation then? I’m inclined to say “practice”, but that much is obvious. A less obvious solution is to equip yourself with some “ninja tips” by learning how each C and P is usually segmented, although again I have to emphasize that it’s vital to maintain a flexible mindset.

McKinsey M&A framework

I absolutely love this one because it works in almost every single M&A case.

There isn’t an official name for this framework, but since it is used by McKinsey consultants when confronting an M&A issue, I’d just call it the “McKinsey M&A Framework”.

The framework assesses a proposed M&A on three dimensions: the stand-alone value of each involving companies (values, strengths, weaknesses, etc.); their synergy, i.e. will the two companies combined be greater than the sum of its parts; and other factors, such as feasibility, culture, legal issues, etc.

• Firstly, the segmentation of stand-alone values and synergy is intrinsically MECE , helping the candidate cover all possibilities – every value of each company must fall into one of these categories.
• Secondly, the framework prompts the user to actively look for “Other factors”, increasing its suitability in unique circumstances.

Are there any shortcomings I should be aware of? 

• The framework does not tell you what to look for in each branch, especially in the “Other factors” branch; this ambiguity shouldn’t be too much of an issue for experienced consultants, but might prove troublesome for candidates.
• Again, as with the previous Business Situation Framework, having a few ninja tricks up your sleeves should help you avoid getting stuck, just don’t rely on them too much.

4P / 7P Marketing Mix

This one is perhaps the single most popular framework in marketing. In case interviews , the 4P/7P Framework is used to formulate and implement marketing strategies for the supposed client, such as in competitive situation or market entry cases.

The original Marketing Mix covers four aspects – Product, Price, Place, and Promotion – thus, “4P”; note that “Place” does not pertain to any physical location, but the channel used by the company to deliver its products to its customers.

When services are involved, the mix becomes 7P; the new additions are: People – those performing the services; Process – how those services are delivered to the customers; and Physical Evidence – the visible, physical clues about the services (think of decorations inside a restaurant).

• The best thing about this framework is its sole focus on marketing, making it very efficient for situations where marketing is the primary/only concern.
• Both the 4P and 7P variants are inherently narrow in scope; candidates must always be mindful that they are not covering the big picture with this framework. Only use them to develop marketing solutions.
• The 4P Marketing Mix, specifically, is not even comprehensive enough for some tangible products, such as high-end fashion, where People, Process and Physical Evidence make huge differences.

Porter’s five forces model

Porter’s Five Forces Model is best used when candidates ask for the case context surrounding the client company; this framework helps them know what to ask.

Michael Porter’s model analyzes how a company’s Competitors, Suppliers, Customers interact with it, as well as how New Entrants and Substitute Products might threaten its place in the industry; it produces a snapshot of the relative power the business holds over its industry environment.

• The model’s coverage of the industry landscape is extensive, giving the candidate a vivid picture of the industry surrounding and interacting with the client in the case.
• This framework doesn’t give a clear answer as to what to do – that is its primary drawback; Porter’s model is not “deep” enough to answer such questions.
• The framework is not comprehensive enough for certain industries where political and legal issues, as well as complementary products, are major factors.
• Another thing to keep in mind: Don’t ever analyze a company with the Five Forces Model – the Five Forces Model describes the industry around that business, not the business itself.

Five mini-frameworks – All-purpose tools

These powerful mini-frameworks are probably the most under-appreciated problem-solving tools ever existed.

Mini-frameworks, like the larger frameworks, are also templates to break down information in a top-down, organized fashion.

Unlike their big cousins, however, these are almost never a primary or upper-most component of an issue tree. Furthermore, while common case interview frameworks are, to varying degrees, business-oriented, mini-frameworks are universal.

In this section, I’ll introduce you to five mini-frameworks I find most helpful in consulting case interviews. They feature prominently as supplements for larger frameworks in candidate-led cases , or stand-alone templates to answer questions in interviewer-led cases.

This is a quick and easy method to segment information about a particular entity. The internal branch concerns the inside of the said entity, such as functions within a company; the external branch describes anything outside that entity.

Here’s an example of this mini-framework as an adjunct to the Profitability Framework:

South Sea – a company specializing in bottled sauces – has found its profits going down badly for the past few years. They want you to find out what’s causing the problem.

You split their profits into revenues and costs; from the data provided, it seems like a revenue problem so you’re going into that branch first. How do you proceed?

Here, a quick check can be performed by splitting the factors causing the decline into two groups – external and internal, then ask the interview if the declining profits are also experienced by other American airlines; “yes” suggests an external root cause while “no” suggests an internal one.

This method of segmentation is primarily used in evaluations. By dividing items into two MECE groups, it reduces confusion and minimizes the risk of missing an important item.

For illustration, we again look at the packaged food company in the previous example:

Turns out, South Sea has quite a few internal problems, in both their production and sales functions. Coincidentally, Wilhelm International is looking to acquire South Sea. Wilhelm controls an extensive distribution network, so the South Sea management is quite interested in the deal.

It’s your task to assess whether South Sea should accept Wilhelm’s offer of acquisition or not.

For this task, I recommend using the McKinsey M&A Framework to break down the analysis into three branches: (1) South Sea’s stand-alone value, (2) its possible synergy with Wilhelm International, and of course (3) there must be an “Other factors” branch as well.

Within each branch, it’s possible to group items into quantitative (profits, growth rates) and qualitative (brand name, capabilities). This combination makes the analysis more MECE , and easier to work with.

Costs vs Benefits

This decision-making tool is pretty straightforward – if the benefits outweigh the costs, you go with that option. Otherwise, you’d be better off keeping your money under the mattress.

The Costs-and-Benefits analysis is a somewhat-business-centric twist of the omnipotent Pros-and-Cons. Both of these approaches work even better with weights attached to each evaluating criterion to reflect its impact.

Now, let’s check up on South Sea:

The acquisition is proven to be beneficial for both sides. With the sales problem solved, South Sea turns its attention to the production issue. The management considers replacing some technologies to improve product quality, but they are not sure if the investment will pay off.

How do you know if the investment is worthwhile?

A simple Costs-and-Benefits breakdown would suffice.

For benefits you have the financial gains to consider, as well as non-financial benefits such as improved brand image (because surprisingly, people love good food!).

2×2 Matrix

The 2×2 Matrix is a decision-making tool where options are examined using two criteria, each of which forms an axis of the matrix.

How do you apply this matrix in South Sea’s case, then?

Wilhelm International, after acquiring South Sea, is looking to push the sales of South Sea’s products using its distribution chain. However, South Sea’s product portfolio is quite large, and each product line differs greatly in terms of sales, branding, and market growth rate.

You must select which product lines to focus on.

The 2×2 matrix most famous in the business world, and also suitable for this case, is BCG’s Growth-Share Matrix, which uses market growth rate and market share as decision-making criteria. The position of a business on this matrix suggests whether to invest in, maintain, or discard that business.

SWOT stands for Strengths, Weaknesses, Opportunities, Threats.

This mini-framework is seldom used in case interviews and consulting work because it’s very generic; however, for a quick and easy evaluation of a company’s positioning within the industry context, the SWOT analysis works just fine.

In most case interviews, this is where you usually turn to the Marketing Mix or the Business Situation frameworks, but even a SWOT analysis may yield some insights.

Other case interview frameworks

Besides the ones we have covered, there are some other case interview frameworks and mini-frameworks worth looking into:

• Six Forces Model: a variant of Porter’s Five Forces, introducing “Complementary Products” into the analysis.
• Lauterborn’s 4C Framework: a more consumer-oriented variant of the 4Ps, designed for niche marketing.
• McKinsey 7S Framework: a framework used in McKinsey for analyzing organizational effectiveness.
• Ansoff Matrix (Product-Market Grid): a 2×2 matrix, designed for product-market strategizing.

Applying frameworks in case interviews

Here are my five rules to effectively implement frameworks in case interviews; if you follow these rules closely, you will absolutely nail the case.

Of these five rules, the first three are about getting the right framework, while the last two are about looking smart during interviews.

• Getting to know the case: “If you know your case and know your frameworks, you need not fear the result of a hundred case interviews” – always gather as much information as possible before and when you draw your issue tree .
• Bending the frameworks: don’t ever bend reality to your frameworks; bend your frameworks to reality; remove, add, or modify elements if necessary.
• Allying with the interviewer: ask the interviewer to help you break down the problem if you get stuck . How do you get him on your side then? By displaying overwhelming consulting traits .
• 13 Reasons why: “Why do you break down the problem that way?”, “Why do you want this piece of data?” – explain all your questions and decisions as if you stand before the US Congress, and before the interviewer asks you; consultants love accountable people.
• Frameworks-which-must-not-be-named: don’t ever explicitly say the names of the frameworks (“I’m going to use the McKinsey M&A Framework”); you would sound very rigid, bookish, or worse, arrogant; consultants don’t like big words without substance.

I’ll give you a brief case sample to see how these rules work in practice:

Interviewer: Our client today is a restaurant called BurgerQueen, located on US Highway 66. The restaurant has found its profits going down last year, your task is to find out the problem and give them a solution.

Candidate: Thank you for the very interesting case, I’m quite excited to solve it. Now, before we dive in,, I would like to playback the case to make sure that we perceive it the same way, ask a few questions for clarification, then announce my approach. Does that sound good to you?

Interviewer: Okay, carry on.

Candidate: Well, let’s see… Our client is a restaurant, on a highway, specifically, Route 66. Their profits have been going bad. I am to find the cause, and solve the problem. Am I getting it right?

Interviewer: Yes, you’re right.

Candidate: Thank you. Now I’d like to clarify the case, so I have 3 questions:

(1) I assume from the name that our client focuses on burgers, and probably other kinds of fast food. Am I right? (2) Does this restaurant have a specific target customer, like truck drivers? And (3) Is it part of a rest stop?

Interviewer: I’ll answer your questions: they sell burgers, but there are many other dishes as well – although mainly fast food; the restaurant does not have a specific target customer, their customers are drivers and travelers on the highway in general; they are part of a rest stop, but they do not own other facilities in the stop, just the restaurant.

Candidate: Great, thanks for the information. Now that we’re all on the same page, and the case has been clarified, I’d like to inform you of my approach. To eliminate this problem in the long run, I think it’s best to break down the problem using an issue tree, isolate the root cause in one of the branches, and gather information until we can draw an actionable solution. Is that approach okay to you?

Interviewer: That sounds good. Continue.

Candidate: To analyze this problem, I’m breaking it down into two sides: Revenues and Costs. Unless we have information pointing in the other direction, I’ll first hypothesize that the problem comes from the revenue side. May I have some data on the restaurant’s revenue during the past year, to prove this hypothesis?

Interviewer: Well, this year their revenue went down by about 40%, but the monthly revenues followed the same pattern as the previous year.

Candidate: Thank you for the data. It’s quite a sudden decrease. I think we can confirm that at least part of this problem comes from the revenue side; I’ll come back to check on the cost side later, now I’d like to go deeper into this revenue branch. Is that okay to you?

Interviewer: Okay, go on.

Candidate: Usually, revenue is divided into sales volume and unit price, but it wouldn’t make much sense for a restaurant with many different items on the menu. My limited knowledge of the food service industry is not exactly helpful, so to draw a more spot-on issue tree, may I ask how they segment the revenue in this restaurant?

Interviewer: Okay, here’s the answer: another way they segment the revenue in a restaurant is into “number of customers” and “average ticket size”, the latter being the purchase value per customer.

What are the key takeaways here?

You can see the candidate tried to gather information on the case through the playback and clarification steps; as a result, he correctly decided that the Profitability Framework is suitable for this case.

However, he quickly found out that the conventional “revenue = volume x price” isn’t too insightful, so he knew he needed to bend the framework.

Unable to find a good way to segment, he asked for help from the interviewer – note how he showed a relevant purpose for the request, and demonstrated that he at least made an effort – these are what we call “consulting traits”.

You should also notice that throughout this brief opening part, the candidate never explicitly mentioned the name of the Profitability Framework, and he always explained his choices before being asked.

Let's practice!

EXERCISE: Develop a 2-level issue tree for this case

The Megapolis City Council is looking to solve a major problem in the city’s traffic – for the last decade, the number of traffic accidents has been rising steadily.

Which factors would you look at, to tackle this problem?

This question apparently can not be answered using any aforementioned framework. In real life, consultants rarely use pre-defined frameworks to solve their client’s issues. Rather, they create unique frameworks based on the MECE principle specific to their problems.

There are few things you should bear in mind to shortcut the way to your own framework:

• Be as MECE or structural as possible.
• Use the issue tree to sketch your framework.
• Break down your problem in a top-down style.

Practice this step-by-step with any real-life issues.

Want to learn more? Join millions of others on our Case Interview End-to-end Secret Program .

Then, to receive personalized practice, you can book a coaching session with our experienced coaches from McKinsey, BCG, or Bain. They will quickly identify your areas of improvement and help you ace your interview.

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Profitability is the most common interview case types in MBB & you will most likely face one. Thus profitability framework is a method to solve profit problems

A case interview is where candidates is asked to solve a business problem. They are used by consulting firms to evaluate problem-solving skill & soft skills

An issue tree is a breakdown method of problems into multiple levels of subsets. It will isolates the root causes and ensures impactful solutions to the problem

Top 7 case interview frameworks (and how to create your own)

Today we're going to cover the top case interview frameworks, as well as how you can create your own custom frameworks. 

Understanding frameworks has always been critical for the 8,000+ candidates who we've helped with consulting interview preparation. 

And one of the first things you'll want to know is that you should AVOID using pre-made frameworks, like those recommended in Case in Point and in Victor Cheng's LOMS programme. But more on that later. 

Let's start with the list of top frameworks.

Top 7 frameworks for case interviews

• 1. Profitability
• 3. Porter's 5-forces
• 5. Market entry
• 7. Merger and acquisition

Don't reuse pre-existing frameworks

How to create custom frameworks, click here to practise 1-on-1 with mbb ex-interviewers, 1. profitability framework.

The   profitability framework   is the most basic framework in business analysis. It simply breaks down profit into its basic revenue and cost components and is commonly used to identify the root cause of profitability issues.

• Revenue   can simply be broken down into the Number of Units Sold x Price Per Unit.
• Costs   can be broken down into Variable and Fixed Costs. And Variable Costs can be further broken down into the Number of Units Produced x Cost Per Unit.

2. The 4Ps framework

The   4Ps framework   is widely used by company executives to design their marketing strategy. There are different variations of this framework, which is also sometimes referred to as the “Marketing mix” framework, but the 4Ps is the most common one.

This framework is commonly used when launching a new product or when reviewing the positioning of an existing product.

• Product : What are the key characteristics of the product sold? Key elements of the product definition could include: customer need fulfilled by product, product usage (E.g. who, where, how, etc.), good vs. service, product lifecycle (new vs. established), competing products and substitutes, etc.
• Price : At what price should the product be sold? Different considerations need to be taken into account here: the customer perceived value of the product, the price of competitive products, the customer price sensitivity, the cost of producing the product, etc.
• Promotion : Which promotion strategies should be used to sell the product? Key elements to consider include: promotion messages, media type (E.g. TV, social media, radio, etc.), best time to promote, competitors’ strategies, etc.
• Place : Through which channels should the product be distributed? Key elements to consider include: possible channels to distribute the product (E.g. in store, web, mail-to-order, etc.), customer expectations in terms of channel, requirement of a sales team or not, competitors’ strategies, etc.

3. Porter's 5 forces

Porter’s 5 forces  is a framework commonly used by CEOs to explore the competitive dynamics of industries. Indeed not all industries are structured the same way.

Some industries are really hard to get into (E.g. banking) while others have very low barriers to entry (E.g. newspapers).

Suppliers have strong bargaining power in some industries (E.g. high-end medical equipment) but little power in others (E.g. small milk producer), etc.

Understanding these dynamics is extremely important when you're considering entering a new industry or when assessing the competitive dynamics of the industry a company is already in.

• Bargaining power of customers : How much bargaining power do customers have? If there is only one buyer but multiple suppliers, then that buyer will be at a strong advantage. Key elements to consider here include: customer concentration (percentage of industry revenues from Top 3 buyers), customer price sensitivity, customer information availability, etc.
• Bargaining power of suppliers : How much bargaining power do suppliers have? Similarly to the previous point, if there is only one supplier but multiple buyers, then that supplier will be at a strong advantage. Key elements to consider include: concentration of suppliers (percentage of industry revenues to Top 3 suppliers), difficulty of switching from one supplier to another, differentiation between suppliers, etc.
• Threat of substitutes : What are the substitutes for the product and are they increasingly popular? As a reminder, water is a substitute for Coke while Pepsi is a competitive product for Coke. Key elements to consider here include: potential new substitutes, ease of substitution, evolution of customer propensity to substitute, etc.
• Threat of new entrants : How difficult is it to enter the industry for potential new players? Key elements to consider here include: regulation authorisations, capital requirements, economies of scale, network effects, etc.
• Existing rivals : How competitive are existing rivals in the industry? Key elements to consider include: number of competitors and their market shares, similarity between their products and products of the firm analysed, financial health of competitors, etc.

4. 3Cs framework

The   3Cs framework   is also commonly used to put together strategies for companies. As you will notice below, a lot of its components overlap with the Porter’s 5 forces.

• Customers : Who is the customer? Key elements to consider include: customer demographics (E.g. age, sex, income, etc.), customer needs, customer segments' size and growth rates, customer willingness to pay and price sensitivity, etc.
• Competition : What are the competitive dynamics? Key elements to consider include: competitors’ value proposition and brand, competitors’ market share and growth, competitors’ financial health, etc.
• Company : What defines the company? Key elements to consider include: product offering, profitability, core competencies, unique selling point, financial performance and resources, etc.

5. Market entry framework

The   market entry framework   is commonly used to make decisions on whether a company should enter a new market or not.

For instance, you could use it to decide if Starbucks should enter the Chinese market, or if Nike should enter the sports broadcasting business.

• Market : What are the characteristics of the market we are trying to enter? Key elements to consider include:   market size  and profitability, products already available in the market, intensity of the competition, heaviness of the regulation, etc.
• Client capabilities : Does the client have the right capabilities to enter that new market? Key elements to consider include: differences between the client's current market and the new one they are now targeting, number of times client has entered new markets and achieved success, other companies already in the new market, etc.
• Financials : Does it make financial sense to enter the new market? Key elements to consider include: current financial situation of the client, cost to enter the new market, ongoing costs once the market is entered, expected revenues and return on investment, etc.
• Entry strategy : How should the client go about entering the new market? Key elements to consider include: timing of market entry (now vs. delay), speed of market entry (test region vs. whole country), opportunity to buy competitor or do a JV, management approach (control from HQ vs. decentralise), etc.

6. Pricing case framework

Companies always face a difficult issue when launching a new product or service. What should its price be? The   pricing framework   is extremely helpful for answering that question.

• Cost-based : What price do we need to set to cover all our costs? Key elements to consider include: fixed costs and their allocation across products, variable costs and number of units produced / sold, profitability targeted, etc.
• Value-based : How much are customers willing to pay for our product? Key elements to consider include: price of the next best alternative to our product, features that make our product better than the next best alternative, value of these features, etc.
• Competitor-based : What is the competition charging for similar products? Key elements to consider include: available substitute products from the competition, price of these substitute products, value of our product vs. substitutes, etc.
• Overall strategy : Given the elements above, what should our pricing strategy be? Key elements to consider include: objective of the pricing strategy (E.g. high profitability or high market share), opportunities for upsell / cross-sell that should be taken into account (E.g. Kindle and ebooks), possibility to sell different versions of the same product (E.g. iPhone 13 and iPhone 13 Pro), etc.

7. Merger and acquisition framework

Finally, the   merger and acquisition framework   is used when companies are looking to acquire or merge with competitors.

These situations are not very frequent in a CEO's life, but they are highly stressful, which is one reason why consultants are often asked to support such initiatives.

• The market : What are the characteristics of the target company's market? Key elements to consider include:   market size  and growth, market profitability and intensity of the competition, market regulation, etc.
• The target : How attractive is the target to be acquired? Key elements to consider include: current and future financial position of the target, important assets or capabilities owned by the target, quality of the target's management team, target / buyer culture fit, etc.
• The buyer : What's driving the buyer to make the acquisition? Key elements to consider include: acquisition rationale (E.g. target undervalued, etc.), acquisition financing, buyer's acquisition experience, acquisition timing, etc.
• Synergies and risks : What are the acquisition synergies and risks? Key elements to consider include: value of individual and combined entities, cost synergies, revenue synergies, biggest risks of failure, etc.

Once you are generally familiar with frameworks, the question becomes: how do you actually use frameworks in case interviews?

There are a lot of opinions about how you should do this on the Internet. But the two main schools of thought are   Marc Cosentino’s Case In Point   and   Victor Cheng’s LOMS .

But both of these methods share the same flaw: they try to force pre-defined frameworks onto cases. In our experience, this is bound to produce average results because all cases are unique.

Not convinced? Let's cover each of these two popular methods in more detail. 

Why NOT to use the Case In Point frameworks

In Case In Point, Marc Cosentino attempts to classify case interviews into 10+ categories and then suggests that candidates should memorise a specific framework for each of them.

This is an interesting exercise as it exposes you to a range of business problems and helps you think about them in different ways. However, in our experience, learning 10+ frameworks is difficult and time consuming.

More importantly, in live case interviews, trying to recognise one of the 10+ case categories and then remembering the associated framework is a real nightmare!

Instead of focusing on solving the problem at hand, you end up trying to remember a framework that will not even perfectly fit the case you are solving. In our experience, the best candidates avoid this strategy.

Why NOT to use Victor Cheng's LOMS frameworks

In his LOMS programme, Victor Cheng advocates for a much simpler method and suggests you should only learn two frameworks: the profit framework for profitability cases, and a general framework for all other cases (Product, Consumer, Company, Competition).

The benefit of this approach is its simplicity. It gives you a starting point that’s easy to remember when you are putting a framework together.

However, in our experience, this approach has a fatal drawback. In practice, there aren’t that many profitability cases, and you basically always end up using the general framework.

Even if you adapt this general framework, it won't be perfectly tailored to the case you are trying to solve. More importantly, your interviewer will quickly realise that you are using a pre-made framework and that will reflect negatively on you.

Why to create custom frameworks instead

A good framework is a bit like a tailor-made suit: it is adapted to the problem you are trying to solve, the company, the industry, and it is also as   MECE   as possible.

If you use pre-existing frameworks, you run the risk of missing important elements of the specific problem you are trying to solve. In real life, consultants rarely use pre-defined frameworks. They are familiar with them, but they do not directly re-use them as-is on projects.

Instead, they create a customised framework or   issue tree  that addresses the specific details of each case.  To do so, they rely on conversations with their client as well as past experiences.

This might sound intimidating, but the good news is that creating custom frameworks is actually much simpler than you might think. 

Now, let's turn our attention to HOW you can create your own custom frameworks during case interviews. 

Here's a brief summary of the steps you'll need to take:

Summary - IGotAnOffer method (framework development questions)

• Step 1: Ask for time to gather your thoughts
• Step 2: Create the framework
• Extract the main elements from the case question
• Break down the main elements into components
• Step 3: Communicate the framework

Spin your paper around

• Begin with an overview

Highlight 3-5 considerations for each branch

Summarise your points, prioritise next steps.

Now let's cover these steps in more detail. We'll also be digging into a real case example below, in order to illustrate the framework creation process.

1. Ask for time to gather your thoughts

Regardless of the case you get, you should always ask your interviewer for some time to gather your thoughts, before you begin to develop the framework. 

This is a normal part of the interview process. Your interviewers will expect you to ask, and they'll almost always give you this time. 

But don't get carried away! 

For reference, you should only take 30-60 seconds to quietly think-through your framework. We recommend that you also sketch out your framework on a piece of paper during this time, as that will help you to organise your thoughts more clearly. 

Without practise, it's really difficult to estimate how long 30-60 seconds actually is, so we highly recommend that you practice this process with a stopwatch. This exercise will help you get a clear idea of how much time you're actually using. 

2. Create the framework

During that 30-60 second time window, you'll need to do the real work of crafting your framework. 

The essence of framework creation is actually quite simple. A framework takes the business situation presented in the case, and breaks it into smaller "bite size" pieces. 

By isolating the various components of a case, you'll be able to better identify the root cause of an issue, or find the best opportunities for improving the underlying business. 

And the best way to develop your framework creation skills is with practice on realistic case problems, so let's walk through an example together. 

Star Production case example

In this case we need to analyse the short-term profitability of a movie production company. So, you would begin crafting your framework by thinking about the different factors that would contribute to the company's overall profits.

The first two components of this framework are fairly straightforward: revenues and costs. That's because the profitability of any company is determined by a combination of their revenues and costs.

Then, we can further deconstruct both revenues and costs based on our knowledge (or perhaps some assumptions) of the movie production business. And as you break down the components further, it's important to consider the concept of MECE, which stands for Mutually Exclusive Collectively Exhaustive.

In simple terms, MECE means that you should aim to have a framework where the branches do NOT overlap with each other, and where the framework is comprehensive (i.e. no branches are missing). You can learn more about this in our separate   MECE guide . 

Now here's an example of what your draft framework might look like for the Star Production case: 

As you can see in the example above, we've broken down the revenues and costs into specific components that would make sense for a movie production business.

And we've used bullet points to highlight the information we would need in order to determine how each individual item contributes to the overall revenues or costs of the business.

For example, we would need to know the expected ticket sales, the average ticket price, and the share of the ticket revenue that Star Production would be entitled to, in order to calculate the total ticket revenue. 

Once you've drawn out a rough framework like the above example, your next task will be to explain your framework to your interviewer. 

3. Communicate the framework

Even if you created the world's best framework, it won't get you an offer if you're not able to explain it in a clear and structured way. 

Here's how we'd recommend you communicate your framework during your interviews:

Start by showing your interviewer the framework that you've drawn on paper. Having this visual structure will make it much easier to explain (and understand). 

Start with an overview

Before jumping into the details of your framework, you should start with an overview of the framework.

In our example above, you could simply explain that the profitability of Star Production will be determined by the expected revenues and costs of the business, which can be broken down into more specific categories. 

You should also tell your interviewer the order in which you plan to walk through each individual branch, so they'll know what to expect.  

Next, go through each branch of your framework and mention several considerations that came to mind while you were drafting the framework. 

For example, for the "upfront costs" branch of the Star Production case, you could explain that you'd want to find out what costs the company would incur before it can start releasing movies, like filming equipment, studio space, and post production expenses. 

And throughout your explanation of the framework, you should pause periodically to summarise your key points, and to check in with your interviewer. 

You're likely going to be covering a lot of ground in your framework, and you want to make sure that your logic doesn't get foggy in the details. 

For example, you could summarise the most important considerations that impact the revenues of Star Production, after you've walked through each individual sub-branch under revenues. 

Finally, after walking through your full framework, you should tell your interviewer the 2-3 next steps you would recommend, in priority order. 

There's a variety of ways you could rank next steps, but three good options would be based on importance, ease, or speed. 

Returning to the Star Production example, you could recommend the following next steps in priority order:

• Identify the biggest cost drivers.   Star Production's business model is focused on producing a high volume of low cost movies, so controlling costs will be essential to the profitability of the company. 
• Develop a production process that minimises costs.  Once the primary cost drivers are identified, we should develop a production process that keeps those costs as low as possible. 
• Look for opportunities to increase the hit rate.   Star Production is counting on a few box office hits to drive revenues. As a result, increasing the percentage of movies that succeed could be a big win.

Get MBB offers by mastering frameworks

To succeed in case interviews, you MUST be able to create and apply frameworks effectively. And i f you really want the best possible preparation for your case interview, you'll want to practise doing this in an interview situation, ideally with an expert consultant giving you feedback.

The IGotAnOffer team

Photo: Roberto Taddeo / IM

• The 1%: Conquer Your Consulting Case Interview
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• Kearney Recruitment Test
• All-in-One Case Interview Preparation
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Mastering Case Interview Frameworks in 2024: A Comprehensive Guide

Last Updated on March 26, 2024

In the competitive world of consulting recruiting , mastering case interviews is a crucial step towards landing a job at top firms like McKinsey , BCG , and Bain . Discovering how to structure case interviews in consulting is fundamental, as the foundation of successful performance lies in effectively tackling complex business problems. In 2024, with more challenging and creative cases, understanding how to craft a compelling case interview framework is more important than ever.

This article serves as a comprehensive case structure guide, diving deep into the art and science of structuring your analysis and providing you with essential insights into what a case interview framework entails, why it’s critical for your success, and the different strategies you can employ to impress your interviewers from the get-go.

Starting with an overview of what case interview frameworks are and their significance, we explore the nuances and provide essential case structuring tips that set apart winning strategies from the rest. We offer tips for acing consulting firm case interview frameworks. Whether you’re wondering about the types of frameworks that exist, what constitutes a robust case interview structure, or if memorizing frameworks is beneficial, we’ve got you covered.

This guide is based on our experience as McKinsey interviewers and cas coaches with more than 1600 case interview sessions conducted at the time of writing. It is designed to give you a head start in your case interview preparation, ensuring you’re well-equipped to structure your thoughts like a seasoned consultant.

By integrating key concepts with practical advice, this article is your ultimate guide to consulting case structure and acing case interviews in 2024. Stay tuned as we guide you on answering consulting structuring questions with confidence and tackle some of the most pressing consulting framework questions, helping you structure your approach in case interviews more effectively. We want to give you a head start by answering the following questions in this article:

• What is a case interview framework?
• Why do you need to structure your approach?
• Are there different types of frameworks?
• What makes a good case interview structure?
• Should you learn case interview frameworks by heart?
• How can you create frameworks from scratch using a first-principles approach?
• What is the best way to practice framework creation?
• How do you structure a McKinsey case interview? Is it different from candidate-led interviews?

This article is part of our consulting case interview series. For the other articles, please click below:

• Overview of case interviews: what is a consulting case interview?
• How to create a case interview framework (this article)
• How to ace case interview exhibit and chart interpretation
• How to ace case interview math questions

What is a Case Interview Framework?

A case interview structure is used to break the problem you are trying to solve for the client down into smaller problems or components. It is the roadmap you establish at the beginning of the interview that will guide your problem-solving approach throughout the case.

You are defining areas to analyze that help you understand where the problem is coming from or how to answer the question of a client.

In that sense, structuring your approach is the first important step in every case interview. Initially, the interviewer will tell you about the client’s situation and the problem they are asking you to solve. After playing back the prompt and asking clarification questions, you need to structure your approach and create a case interview framework.

Let’s look at one traditional example:

Our client is a beverage manufacturer and has seen declining profits over the last year. They have called us to investigate the issue and propose ways out of it. A typical case interview prompt (simplified)

For you as a candidate, getting the framework right is the first step to successfully acing the case. If you fail to propose a proper analytical structure, you will not be able to investigate the situation and find the root cause of the issue.

A case interview framework usually consists of a top layer and several sub-levels, where the top-level buckets cover the issue broadly, whereas the sub-level buckets identify more concrete areas to look at.

To illustrate, the most common and basic structure that would allow us to analyze the situation on top would be looking at:

Profit = Revenue – Cost

This high-level structure is used for profitability cases when you are tasked to solve an issue with the client’s profit development. The two buckets revenue and cost represent the top level. To analyze the problem properly, you would need to go deeper and figure out what sub-levels influence the variables you are looking at.

For instance, for our beverage manufacturer, you could look at cost and break it down into fixed cost and variable cost with a 3rd level of concrete areas to investigate:

It is important to tailor the structure and associated sub-levels to the case questions. Framework templates were en vogue 5-10 years ago and consulting firms have moved away from asking generic cases that would fit the frameworks taught by Case in Point or Victor Cheng (more on that below).

In terms of format, the best-practice approach to structuring a case is to build an issue tree with branches, which are split into several sub-branches (see the example below).

As with most other aspects of the case interview, mastering effective consulting interview frameworks and deconstructing problems is a skill that needs to be learned, internalized, and practiced to perform best during the interviews.

We’ll cover this in much more detail later in this article.

Why Do You Need a Framework to Structure Your Approach?

The initial structure you need to come up with serves three important purposes in a case interview.

Investigative roadmap

First, it is the roadmap you establish initially that guides your problem-solving throughout the case. Once you lay out your planned approach, you should go through each bucket or branch of your issue tree to find the issue(s) the client is facing or to evaluate the ideas you came up with to fit the needs of the client and then work on your recommendation(s). The case framework serves as the anchor you should stick to as you move through your analysis.

Communication device

Second, it is used as a communication device to guide the interviewer through your thought process and approach. Additionally, moving through the structure allows you to ask targeted questions to the interviewer about additional data or information on each point.

Analytical test

Third, coming up with a proper structure and communicating it well is a test in itself. The interviewer tries to understand how well you can tackle unfamiliar problems. They will evaluate your thinking, logic, analytical capabilities, and problem-solving prowess as well as communication skills.

Case Structuring Course and Drills

Learn how to structure any case, regardless of the problem, industry, or context with our first-principles approach to problem deconstruction and brainstorming. We use our McKinsey interviewer experience to teach you how to structure cases like a real consultant.

Includes 25 lessons on structuring and brainstorming and 100 practice drills.

Different Types of Frameworks with Examples

Generally, two types of case frameworks exist, depending on the nature of the question.

Either you are asked to break a problem down into its parts and understand where an issue comes from to provide a recommendation (e.g. ”Our client is trying to understand why…?” ) or you are asked to answer a specific question ( ”Should our client engage in…?” ).

Figuring out a problem

A structure here is the starting point and anchor of your problem diagnostic.

First, you need to think about all potential problem areas, then drill down into each branch to figure out what is wrong exactly by collecting more information from the interviewer and exhibits; based on your probing you will receive information from the interviewer that you have to analyze qualitatively and quantitatively, then provide a recommendation in the end.

Answer a question

For these types of questions, a structure is a systematic analysis of a situation or comparison of options that you want to investigate on behalf of the client to help them with a specific goal or question.

For both types of structures, you should follow a hypothesis-driven approach, i.e. already having a clear vision of where the problem could be buried most likely or what approach or idea would best support the client’s goal.

Apart from knowing what frameworks are used for, what characteristics make a strong case interview structure?

Criteria of Strong Case Interview Frameworks

A good case interview framework follows several rules.

Let’s break them down into content requirements and principles.

Content requirements

An excellent structure is broad at the top level, goes into greater depth on the sub-levels, and consists of meaningful and insightful ideas.

• Breadth: How many buckets does your structure consist of at the top level? While in a profitability case, the top level is given, for many other cases you can expand your top level by several buckets ( Real MBB case question: ”What could be the reason our machines break down at different rates in different locations?” ).
• Depth: How deep do you go into each top-level idea and come up with levers/areas to look at below? How well can you support your top-level with the actual ideas that influence it?
• Innovation: How meaningful and insightful are your ideas? Create a mix of common components as well as more out-of-the-box answers. Tell the interviewer something they have not heard before.

Principles of success

Make sure that your structure adheres to the principles below.

• MECE-ness: Refers to a grouping principle for separating a set of ideas into subsets that are mutually exclusive (no overlaps between the different branches of the issue tree) and collectively exhaustive (covering all important aspects). It is used to break down problems into logical and clean buckets of analysis.
• Actionable: Your answer should only consist of ideas that you can exert influence on within the given time frame (e.g. if you are asked to come up with measures over the next year, everything beyond that should not be touched in your structure).
• Logically coherent: Top levels and sub-levels should be consistent within their level and across levels. They should stick to the same hierarchy of importance and logic (e.g. if you are comparing revenue and cost, they should be at the same level, and everything that influences the two should be below).
• Relevant: The content should be relevant to the case at hand, tailored to the client, and easy to follow and communicate. Avoid over-structuring your case. Find a few broad categories at the top and then break them down further.
• Hypothesis-driven: You should have a clear idea of where the problem is buried or what solution is best for the client from the start, and while moving through the structure and gathering additional information, that hypothesis should become clearer.

Memorizing Frameworks is the Worst Thing You Can Do

Upon beginning work with new clients, it becomes immediately evident when they’ve memorized standard frameworks, as this practice typically affects their early performance noticeably. It’s hard to fault them, given that prevalent case interview guidance and literature still advocate memorizing frameworks to apply or tweak across various cases.

Be aware that framework templates were applicable 15 years ago, in the era of Victor Cheng and Case in Point. McKinsey and other top-tier firms have long caught up on this and the cases you will get during the interviews are tailored in a way to test your creativity and ability to generate insights, not remember specific frameworks.

In fact, it will hurt you when you try to use a framework on a case that calls for a completely different approach. Also, it gives a false sense of security that will translate to stress once you figure out how your approach won’t work during the real interview – We have seen this so many times…

Your goal should be to master various framework creation methods, allowing you to build custom issue trees and frameworks, interpret charts , and perform math no matter the case’s context, industry, or function. Our approach teaches you this and trains your ability to come up with deep, broad, and insightful structures for each case individually.

Now, if you come from a non-business background, it certainly does not hurt to glance over the classic frameworks once (e.g., market entry, product development) to become familiar with the terms and phrases as long as you are aware that their usefulness ends there.

Also, be aware that there is no typical McKinsey case interview framework, BCG case interview framework, or Bain case interview framework. All firms use a diverse set of cases, which are usually developed by each interviewer individually based on a real consulting project they have completed.

If you are looking for case interview examples, check out this article , where we have compiled a link list of all publicly available MBB and tier-2 consultancy cases.

Back to the frameworks: Memorizing frameworks for a case interview may seem like an effective strategy, but in reality, this practice is detrimental to your performance. McKinsey, BCG, Bain, and other top consulting firms want to see candidates come up with their own solutions and innovative approaches.

I want to show you why memorized frameworks like the ones from Case In Point or Victor Cheng do not work and supplement these with plenty of examples to bring the point across. In the end, I want to introduce you to my Structuring Drills course as well as my Case Interview Preparation book, The 1%: Conquer Your Consulting Case Interview . Both resources are aimed at developing you into a world-class case interviewee.

Below are the top reasons why memorized frameworks and cookie-cutter approaches do not work.

No points for problem-solving

First, case interviews are designed to test your problem-solving and critical-thinking skills, not your ability to regurgitate memorized information. Frameworks are meant to be a guide, not a script. Using a memorized framework in an interview can make it obvious that you are not thinking critically about the problem at hand, which can make it difficult for you to impress the interviewer. Interviewers want to see insightful analytical constructs, which means that they need to be tailored, relevant, and concrete.

If you just use memorized buckets, you will score badly in terms of problem-solving. To see a real scoring sheet, go here .

Cases have become much more creative

Second, case interviews often involve unique and unpredictable scenarios. No two cases are the same, so a memorized framework may not apply to the specific problem you are presented with. Attempting to force a framework onto an unrelated problem can make it clear that you lack flexibility and the ability to adapt to new situations.

For instance, let’s look at a real McKinsey case example from a couple of years ago.

You are working with an operator of a specific type of machines. They break down at different rates at different locations. What factors can you think of why that would happen? Example of a McKinsey Case Interview Structure Questions

Which Victor Cheng framework or Cosentino ideas would you present here to the interviewer? There is not a single bucket that would work.

Let us look at an example answer for this prompt.

You limit your creativity

Third, using a memorized framework can limit your ability to think creatively. When you are focused on trying to fit the problem into a pre-existing framework, you may miss opportunities to come up with innovative solutions.

1% of candidates make it through the filter of MBB . You want to provide insights the interviewer has not heard before and not be just like the other 99% that fail to impress.

You have no rationale

Fourth, case interviews also test your ability to communicate and present your thought process effectively. When you are relying on a memorized framework, you may not be able to explain the reasoning behind your solutions and ideas. This can make it difficult for the interviewer to understand your thought process and evaluate your problem-solving skills.

Interviewers want to understand why you think a certain way, not just what you think. Memorizing frameworks completely kills your ability to support and defend your choices.

In conclusion, memorized frameworks can be detrimental to your performance in a case interview. Instead, it’s better to focus on developing your problem-solving, critical thinking, flexibility, creativity, and communication skills. These are the skills that are truly valued in case interviews and a business setting later on.

Let’s have a brief look at how you can become a better problem solver and create frameworks like an actual consultant.

Apply a First-Principles Approach to Frameworks

Consultants approach problems from a first-principles perspective. If you learn how to do the same, not only will you come across as an equal to them, not just another case interviewee, but your analytical lens and case performance will skyrocket. Adopt these innovative framework creation methods for case interviews.

First-principles thinking

At the core of your idea generation should be first principles thinking, which refers to the process of systematically deconstructing a problem or situation into its constituent parts in a MECE way. Only by following this approach can you identify where the issue in a case comes from and how big it is (the what), then dive deeper to understand the reason (the why) to eventually work on a solution (the how). First principles allow you to break a situation down into its core pieces and then put it back together.

For instance:

“What do we need to build an aircraft?”

• A factory (infrastructure)
• Tools and equipment
• Financial means

From there, you go into second and third-order considerations; for instance, for staff:

• Formal education and training
• Work experience
• # of people in total
• # of people for different areas (e.g., engines vs. wings)
• Supply of and demand for labor in the area
• Job advertisement
• Working conditions
• Remuneration and benefits

There are several ways you can employ this type of thinking for creating case interview frameworks. First, we look at the top level of your issue tree, the foundation of your problem-solving, and then explore in more depth the branches, all with a first principles perspective in mind.

Framework creation techniques

For most cases, you can focus on problem deconstruction from two angles: examining the components involved and understanding the process.

To illustrate, we’ll explore the example of improving customer satisfaction for an airline.

The component approach

When we dissect a problem through the lens of its components, we look at the static elements that make up the situation. For an airline, this could include the tangible and intangible assets that affect a customer’s experience. These components might encompass the aircraft itself (comfort, cleanliness, amenities), the staff (friendliness, efficiency), the booking system (ease of use, flexibility), and ancillary services (lounge access, on-board meals).

By examining each component individually, you can identify potential areas for improvement. For example, an analysis might reveal that enhancing the on-board meal quality could significantly boost overall customer satisfaction. This approach requires a deep dive into each element, assessing its current state, impact on the customer journey, and potential for optimization.

The process approach

Alternatively, examining the problem through a process lens involves mapping out the sequence of steps a customer takes, from booking a flight to reaching their destination. This perspective allows you to identify pain points and opportunities for enhancement at each stage of the customer journey.

For instance, you might discover that the check-in process is a significant bottleneck, causing frustration and setting a negative tone for the journey. By streamlining this process, perhaps through more efficient use of technology or additional staff training, you could improve the overall customer experience, thereby increasing satisfaction.

Once you have generated your top-level buckets, expand those ideas into more concrete ideas on the levels below. For instance, from a component perspective, you might have identified staff as an area to investigate.

Next, think about what type of staff a typical passenger encounters like booking agents, check-in staff, lounge personnel, cabin crew, etc. Voila, you have created the most concrete and final level of your analytical framework structure.

Try it out yourself when you encounter the next case problem and think about it either from a process or component perspective, then dive deeper.

While it might be harder initially to use this approach of creating frameworks from scratch, the outcome over time always beats memorization. Hence, we do not recommend any other way to learn and practice frameworks.

Practicing Case Interview Framework Creation and Problem Deconstruction

Developing a strong foundation in creating case interview frameworks is essential for success in consulting interviews. This skill is not about memorizing a set of frameworks but understanding how to construct them from scratch based on the problem at hand. Here’s how you can hone this ability:

1. Master content creation techniques for problem deconstruction : Our course is designed to equip you with the right techniques for breaking down complex problems into manageable parts. We focus on first principles thinking and an intuitive way of breaking down problems, enabling you to understand the core elements of any issue you’re presented with, which is crucial for custom framework creation.

2. Practice with a variety of cases : Exposure to a wide range of case scenarios is key. Our library includes over 100 practice cases, complete with detailed answer keys and explanations. This diverse set of examples will not only improve your ability to adapt your framework to different problems but also enhance your problem-solving speed and efficiency.

3. Regularly read business publications and magazines : Keeping up-to-date with the latest in the business world is invaluable. This habit sharpens your business acumen, enriches your understanding of current market trends, and deepens your industry knowledge, all of which are critical when you need to tailor your frameworks to specific contexts.

4. Understand basic business concepts and terminology : A solid grasp of fundamental business concepts and jargon is non-negotiable. This foundational knowledge ensures you can speak the language of business fluently, making it easier to structure your thoughts and communicate effectively during the case interview.

Remember, the goal is not to memorize frameworks but to learn how to construct them dynamically as per the needs of the case. This approach ensures that your frameworks are always tailored, insightful, and directly relevant to the problem you’re solving.

Also, do not forget that creating the structure at the beginning of the case is just the first step. There are also other elements to consider in a consulting interview preparation plan .

Case Interview Framework in McKinsey Interviews

Since the McKinsey interview is interviewer-led, there is an extra emphasis on the structuring part.

At the core, McKinsey wants to see creative ideas communicated in a structured manner, the more exhaustive the better. Your goal should be to come up with a tailored and creative answer that fits the question.

In a McKinsey interview, you can take up to 2 minutes to draft your structure, IF the structure you come up with is strong and

• hits all the key points that the firm wants to see and
• is communicated in the right way.

A big issue I see with coaching candidates is that they take too little time to structure their thoughts because they feel pressured to be quick rather than exhaustive and creative.

An additional 30 seconds can often make the difference between a bad structure and a good one or a good one and an excellent one. So my battle-tested advice is to get rid of this time-pressure mindset, especially in a McKinsey interview.

Now for the content of the structure, there is no right or wrong answer. Some answers are better than others because they are

• hypothesis-driven
• follow a strong communication (MECE, top-down, signposted)

That being said, there is no 100% that you can reach or a one-and-only solution/ answer. It is important that your answers display the characteristics specified above and are supported well with arguments.

Also different from other firms, you can take up to roughly 5-6 minutes to present your structure, your qualifications, and hypotheses. This is due to the interviewer-led format that McK employs. The firm wants to see exhaustive and creative approaches to specific problems.

Again, this only applies if everything you say

• adds value to the problem analysis
• is well qualified
• includes a detailed discussion of your hypotheses at the end

The difference in format and way of answering a question is the reason why I recommend preparing differently for McKinsey interviews vs. other consultancies’ interviews.

Read more about the McKinsey interview process and the McKinsey case interview specifically.

We Help You Draft Frameworks and Communicate Them Well

I have seen memorized and cookie-cutter frameworks destroy many candidates’ performance and chances to get an offer for many years now. The only issue that is bigger than that is the typical candidate’s ability to handle case math ( but that is for another time ).

To conquer that and many other things that I think are wrong with today’s standard literature on case interviews, I wrote The 1%: Conquer Your Consulting Case Interview . The book is available on Amazon and covers frameworks, case structuring, and brainstorming in great depth. It teaches you how to think and not to memorize faulty frameworks (among 340+ pages of other valuable case interview content).

Once you have understood how to tackle a case structure, you can practice with the Case Structuring Course and Drills here on StrategyCase.com.

We have specialized in placing people from all walks of life with different backgrounds into top consulting firms, both as generalist hires as well as specialized hires and experts. As former McKinsey consultants and interview experts, we focus on teaching the best habits and strategies to ace every case interview, including idea generation, problem-solving, and brainstorming, all from a first-principles perspective.

We can help you by

• tailoring your resume and cover letter to meet consulting firms’ highest standards
• showing you how to pass the different online assessments and tests for McKinsey , BCG , and Bain
• showing you how to ace McKinsey interviews and the PEI with our video academy
• coaching you in our 1-on-1 sessions to become an excellent case solver and impress with your fit answers (90% success rate after 5 sessions)
• preparing your math to be bulletproof for every case interview
• helping you structure creative and complex frameworks for case interviews
• teaching you how to interpret charts and exhibits like a consultant
• providing you with cheat sheets and overviews for 27 industries .

Reach out to us if you have any questions! We are happy to help and offer a tailored program to help you break into consulting.

To improve your skills in all areas of the interview, check out some of our targeted offers below.

Frequently Asked Questions about Case Interview Frameworks

In more than 1600 case interview sessions at the time of editing this article, several questions have come up frequently from my clients. To assist you in this critical phase of your case interview preparation, I’ve compiled a list of frequently asked questions about case interview frameworks.

These questions aim to shed light on the nuances of preparing for and excelling in case interviews, providing you with insights to enhance your understanding and skills.

How do specific industries impact the creation of case interview frameworks? Industries play a crucial role in shaping the choice of case interview framework components, specifically at the lower levels. At the top level, most companies are built in the same way, regardless if they are offering a product or a service. The main difference to tailor it to the industry usually happens on the lower levels of the framework. For instance, while both an airline and a bookstore generate revenue, which is comprised of price times quantity, the pricing for an airline works very differently (e.g., ticket price, booking fee, seat allocation fee, baggage allowance fee, etc).

Can you provide real-life examples of case interview questions from top consulting firms and how to apply frameworks to them? While specific real-life examples are proprietary, many consulting firms publish practice cases on their websites. These can serve as a valuable resource for understanding how to apply frameworks to solve common business problems, with each case typically demonstrating the application of different analytical frameworks. We have collected many free practice cases from different firms here .

What are the common mistakes candidates make when structuring their approach in case interviews, and how can they avoid them? Common mistakes include overly relying on memorized frameworks without creating new ones for the specific case, failing to listen actively to the interviewer’s hints, and neglecting to structure answers in a MECE (mutually exclusive, collectively exhaustive) manner. Avoid these by practicing flexibility, active listening, and ensuring your approach is tailored and comprehensive.

How has the approach to case interviews and the use of frameworks changed over the past decade? The approach has shifted towards evaluating candidates’ ability to think creatively and adapt frameworks dynamically rather than relying solely on memorized structures. This change reflects the consulting industry’s need for innovative problem solvers who can navigate complex and evolving business landscapes.

Are there any differences in how frameworks should be applied in virtual versus in-person case interviews? The core principles remain the same, but virtual interviews require candidates to be even more clear and structured in their communication , given the lack of physical presence. Ensuring technical setup is optimal and practicing verbalizing your thought process can help bridge the gap.

What role does creativity play in structuring case interviews, and how can candidates balance it with the use of standard frameworks? Creativity is crucial for developing tailored and insightful frameworks that go beyond standard responses. Candidates should not use standard frameworks but explore creative angles and solutions to demonstrate their unique problem-solving abilities.

How can non-business background candidates quickly grasp the concept of case interview frameworks? Non-business candidates should start with foundational problem-solving practices and business concepts and practice applying them to diverse case scenarios. Leveraging resources like business publications, online courses , and practice cases can accelerate their understanding and application of case frameworks.

What are the interviewers’ perspectives on the use of frameworks, and what do they look for in a candidate’s approach? Interviewers seek candidates who can create their own frameworks flexibly and creatively, showing an understanding of the underlying business principles. They value clarity, logical structuring, and the ability to derive actionable insights tailored to the specific case. Interviewers usually do not pass candidates who use memorized frameworks that do not fit the case.

How can candidates effectively practice and improve their framework structuring skills? Practice is key. Engaging in mock interviews, analyzing case studies, and receiving feedback from peers or mentors can greatly improve your ability to structure effective frameworks. Additionally, regularly challenging yourself with new and diverse case scenarios can build adaptability and depth in problem-solving. If frameworks are one of your key development areas, do not waste time going through full cases. Rather, work on individual drills back to back to create a habit of deconstructing problems accurately and swiftly.

What are some advanced techniques for customizing frameworks to fit unique case interview scenarios? To customize frameworks for unique case interview scenarios, focus on deconstructing the problem using first principles thinking. Break down the issue into its fundamental components or underlying steps to understand its structure. This approach enables you to create a tailored framework that directly addresses the specificities of the scenario. Apply relevant industry insights and business sense to enhance your analysis. Begin with a clear, strong hypothesis to steer your investigation and framework construction, ensuring that every part of your framework is directly relevant to unraveling the core problem at hand.

Do you have a framework-related question or struggle? Reach out to us in the comments below and we are happy to help!

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Florian spent 5 years with McKinsey as a senior consultant. He is an experienced consulting interviewer and problem-solving coach, having interviewed 100s of candidates in real and mock interviews. He started StrategyCase.com to make top-tier consulting firms more accessible for top talent, using tailored and up-to-date know-how about their recruiting. He ranks as the most successful consulting case and fit interview coach, generating more than 500 offers with MBB, tier-2 firms, Big 4 consulting divisions, in-house consultancies, and boutique firms through direct coaching of his clients over the last 3.5 years. His books “The 1%: Conquer Your Consulting Case Interview” and “Consulting Career Secrets” are available via Amazon.

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11 must-know case interview frameworks

This is a complete guide to case interview frameworks.

In this in-depth guide, you’ll learn:

• 11 must-know consulting frameworks to ace your case interviews
• How to use these frameworks in your case interviews
• And how to create custom frameworks

So, if you want to land an offer from a top consulting firm, this guide is for you.

Let’s dive right in.

Table of Contents

Get the latest data about salaries in consulting, what are case interview frameworks.

A case interview framework is a structured way to approach how to solve a problem .

In other words:

Case interview frameworks help Consultants (and aspiring Consultants) brainstorm and organize their ideas to solve complex problems.

For example, a case interview framework is the profitability framework.

Let’s imagine this business problem:

Your client is manufacturing cars. And, for the past 2 years, they have been experiencing declining profits. They hire us to determine the root causes of this business problem.

And to help this company, you should explore the two main profit drivers: revenues and costs.

And explore if revenues decreased (one cause of declining profits).

Or explore if costs increased (another cause of declining profits).

Well… this (simple) example is a business framework.

Related articles

Check also these articles to ace your case interviews:

16 case interview tips

16 case interview mistakes

Ace market sizing questions (incl. 3 market sizing frameworks) 

Case interview preparation

280 case interview examples

Let’s detail the 11 common case interview frameworks you must know to ace your case interviews .

And let’s start with Porter’s five forces.

Case interview framework 1: Porter’s Five Forces

Let’s start with an analysis of external factors.

And one of the most well-known business frameworks is Michael Porter’s Five Forces model.

And it can be found in the book Competitive Strategy: Techniques for Analyzing Industries and Competitors .

Michael Porter’s Five Forces model says the following:

Competitive advantage in an industry is dependent on five primary forces :

• The threat of new entrants
• How much bargaining power do buyers have
• The bargaining power of suppliers
• Threat of substitute products
• Rivalry with competitors

The degree of these threats determines the attractiveness of the market:

• An intense competition allows minimal profit margins.
• Mild competition allows wider profit margins.

Therefore, the goal is to assess whether a company should enter/exit the industry or find a position to defend itself against these forces best or influence them in its favor .

For instance, your market entry framework should include the components of Porter’s Five Forces. 

The threat of new entrants (barriers to entry)

Several factors determine the degree of difficulty in entering an industry:

• Economies of scale

Product differentiation

• Capital requirements vs. switching costs
• Access to distribution channels
• Cost advantages independent of scale
• Proprietary product technology
• Favorable access to raw materials
• Favorable location
• Government subsidies
• Learning curve
• Government policy

Relationship with buyers (buyer power)

• It is concentrated or large purchases volumes relative to the seller’s sales
• The products it purchases front the industry are standard or undifferentiated
• It faces few switching costs
• Buyers pose a credible threat of backward integration
• The industry’s product is unimportant to the quality of the buyer’s products or services
• The buyer has full information
• Purchasing potential
• Growth potential
• Structural position: intrinsic bargaining power and propensity to use it
• Cost of servicing

Relationship with suppliers (supplier power)

A supplier group is powerful if:

• It is not obliged to contend with other substitute products for sales in the industry
• The industry is not an important customer of the supplier group
• The supplier group is an important input to the buyer’s business
• The supplier group’s products are differentiated, or it has built up switching costs
• The supplier group poses a credible threat to forward integration

Key issues in purchasing strategy from a structural standpoint are as follows:

• Stability and competitiveness of the supplier pool
• An optimal degree of vertical integration
• Allocation of purchases among qualified suppliers
• The threat of backward integration

Substitute products

Substitute products that deserve the most attention are those that:

• Compete in price with the industry’s products
• Are produced by industries earning high profits

Rivalry among competitors (competitive analysis)

Now, let’s analyze the competitive landscape.

Rivalry among existing competitors increases if:

• Numerous or equally balanced competitors exist
• Industry growth is slow
• Fixed costs are high
• There is a lack of differentiation (commodity market)
• There are low switching costs
• Production capacity is augmented in large increments

To end this first section about Porter’s Five Forces, you can watch this video made by the channel Business To You.

Case interview framework 2: the 4 P’s

The 4Ps are:

And it’s often seen as a Marketing framework.

The 4Ps framework can help you in your case interviews in one of the following situations :

• A market entry strategy or a product launch strategy
• To understand why sales (or market shares) have decreased

Now, let’s look at the different elements of the 4P framework.

In examining the competitiveness of a company’s product, whether it is a new product being introduced on the market or an existing product manufactured by the company, one must examine the product itself.

The following are some of the questions you might find helpful in assessing a product’s competitiveness :

• Does the product serve a particular market segment? Is it a mass market or a niche product
• Is it differentiated enough to stand out against the competition? If yes, how? If not, what can be done to improve its value perception?
• What features can be added to the product that would add to the perception of value to the consumer?
• What are some of the packaging issues that might present an opportunity or impediment to increased sales?
• Does my packaging reflect the positioning of the product?
• Does the product have patent protection?
• What financial role is the product playing (i.e., cash cow, long-term profit potential, etc.)?
• Are there any other products that can act as substitutes?

Getting the right price for a product is extremely important for the company’s success.

Unfortunately, sometimes the right price is not easy to determine.

Depending on the price elasticity of the product, a 1% increase in price has anywhere from a -20% reduction to a 25% increase in net income.

The most important factor that drives price is the customer’s perceived “value” of the product .

This is also known as the customer’s willingness to pay.

For example, if a company produces shirts with a unit cost of $10, but the market perceives the product as fashionable or has the right brand name, the shirt can be priced to capture any consumer surplus at $50 or even $80 per shirt.

The same manufacturer introduces another shirt at the same cost the following season.

This time, however, the shirt is no longer considered in vogue and thus has little “value.”

This time, the shirt would be priced at $25.

Other factors determining a product’s price are:

• The Cost to Produce COGS : maintain low costs to capture a bigger profit margin.
• The price paid previously – the expected price: if consumers are used to paying a certain price for a product, it is challenging to convince them to pay a $20 premium for the same product. However, if their perceived product value is higher than what they paid in the past, there’s room to capture some consumer surplus.
• The price of substitutes : the price of a product is driven down if the product can be easily substituted by another that serves the same function.

After assessing the product positioning and understanding who your customers are, you need to develop a strategy around which distribution channel to use and where to sell your product .

The distribution channel can be through a third party or an in-house sales force.

And the distribution channel is responsible for transmitting the company’s product to the customer (wholesaler, retailer, end-user).

The selected distribution channel and the outlets at which the product is sold MUST be aligned with the product’s positioning and focused customer segment.

There are many issues to consider when examining the place/channel distribution.

Below are some thoughts to formulate a strategy for delivering the product to market :

• What are the customer preferences regarding distribution?
• Which channels most closely align with the company’s strategy?
• Does the company need to build new channels or eliminate existing ones?
• Does it make more sense to go direct to the end-user or deliver the product through intermediaries?
• What are the economics of the channel?
• What would be the relationship of the company’s sales force in this arrangement?
• How would the company address any potential shifts in power to the channel?
• How do competitors distribute their products?

Promoting and developing a specific brand for the product has many benefits :

It develops a certain perception of the product in consumers’ eyes.

The product’s success will depend on the message conveyed to the consumer and what that consumer ultimately believes about the product.

To maintain a certain perception of exclusivity, traditional advertising (mass or niche), refraining from advertising, word-of-mouth marketing, direct mail, etc., can all be included in promotion and branding.

Here is a list of issues worth analyzing in case interviews:

• How is the marketing strategy different from the competition?
• What message are we trying to communicate? What is the objective?
• Where are we advertising our product (newspapers, TV, radio, Internet, etc.)?
• Pull strategy: (direct at end-user) use of advertising, direct mail, telemarketing, word of mouth, and consumer promotions.
• Push strategy: trade promotions, sales aids, and sales training programs
• How much money is allocated to marketing?
• How are competitors marketing their products?

Ace market sizing questions

Case interview framework 3: the 3 C’s

Knowing the 3C framework and the details upon which the framework is based is crucial to cracking the case .

For instance, the 3C framework is often used to assess the business landscape.

Or by simply defining a growth strategy.

For instance, your market entry framework should include the 3C’s. 

By analyzing the three elements, Consultants can identify the key success factors and create a viable marketing strategy.

DO NOT attempt to tackle a case during the interview by saying, “I would like to use the 3Cs framework…”

Before you even finish your sentence, the interviewer will have decided to reject you.

This point will be emphasized many times during this guide.

A good first step in assessing the business landscape is to examine the customer, the people whose problems the industry is trying to solve.

Below are eight factors to consider when examining the customer.

#1: Customer Identification

Who is the customer?

In trying to identify the customer, remember that the person who makes the purchase decision, the person who pays (the customer), and the end user (the consumer) may all be different people.

For example, a doctor may prescribe medicine that will be paid for by an insurance company (the customer) and ultimately used by a patient (the consumer).

#2: Customer Segmentation

Is it possible to group customers into distinct segments?

Customer segmentation can make it easier to understand customer needs and preferences, the size and growth rate of different revenue streams, and to identify trends.

It may make sense to segment customers by: 1. Age group 2. Gender 3. Income level 4. Employment status 5. Distribution channel 6. Region 7. Product preference 8. Willingness to pay 9. New versus existing customers 10. Large versus small customers.

How big is the market?

How big is each customer segment?

How many customers are there in each segment, and what is the dollar value of those customers?

How fast is the market growing?

What is the growth rate of each customer segment?

#5: Customer Preferences

What do customers want?

Do different customer segments want different things?

Are the needs and preferences of customers changing over time?

#6: Willingness to Pay

How much is each customer segment willing to pay?

How price sensitive is each customer segment?

For example, students will normally be very price sensitive, which means that offering student discounts can increase units sold by enough to increase total revenue.

#7: Bargaining Power

What is the concentration of customers in the market relative to the concentration of firms?

If there is a small number of powerful customers who control the market?

Then it may be necessary to either play by their rules or search for a more favorable market.

Do customers face high switching costs?

If customers face high switching costs, this will reduce their bargaining power and allow firms to charge higher prices than would otherwise be possible.

#8: Distribution

What is the best way to reach customers?

Does each customer segment have a preferred distribution channel?

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Competitors

It is also important to understand the business landscape to understand the competition .

Competition can come from firms within an industry offering similar solutions to the same group of customers (for example, Pepsi and Coca-Cola).

But, competition can also come from firms in other industries who produce substitutes .

Substitutes may have quite different characteristics (for example, petroleum and natural gas).

Still, they represent a form of indirect competition because consumers can use them in place of one another (at least in some circumstances).

For example, petroleum and natural gas might produce heat and energy.

Below are ten factors to consider when examining the competition.

#1: Competitor Identification

Who are the company’s major competitors?

Taking Cadbury as an example, some of its major competitors might include Lindt, Ferrero, Nestlé, Hershey’s, and Mars.

What products and services does the competition offer?

#2: Substitutes

Who are the company’s indirect competitors? That is, which firms are producing substitutes?

Identifying indirect competitors helps to take a broader view of what the company offers.

For example, Cadbury sells chocolate.

But it might be considered a snack food company.

So indirect competitors might include companies like Lays, Cheetos, and Doritos.

#3: Competitor Segmentation

Is it possible to segment competitors in a meaningful way?

The competition might be grouped by distribution channel, region, product line, or customer segment.

#4: Size and Concentration

What are the revenues and market shares of major competitors?

What is the concentration of competitors in the industry?

Are there many small competitors (a low-concentration industry) or a few dominant players (a high-concentration industry)?

Examples of high-concentration industries include oil, tobacco, and soft drinks.

Examples of low-concentration industries include wheat and corn.

#5: Performance

What is the historical performance of the competition?

Relevant performance can be profit margins, net income, and return on investment.

#6: Industry Lifecycle

Where is the industry’s lifecycle (early stage, growth, maturity, or decline)?

#7: Industry Drivers

What drives the industry: brand, product quality, the scale of operations, or technology?

#8: Competitive Advantages

What is the competition good at?

How sustainable are these advantages?

What are the competition’s weaknesses? How easily can these weaknesses be exploited?

#9: Competitive Strategy

What strategy is the competition pursuing?

Is the competition producing products that are low-cost or differentiated?

What customer segments is the competition targeting?

What are the competition’s pricing and distribution strategies?

What is the competition’s growth strategy?

Are they seeking growth by focusing on customer retention, increased sales volume, entering new markets, or launching new products?

#10: Barriers to entry

Key barriers to entry include capital requirements, economies of scale, network effects, product differentiation, proprietary product, technology, government policy, access to suppliers, access to distribution channels, and switching costs. (see Porter’s five forces model).

In assessing the business landscape, it is not enough to understand the customer and the competition.

Understanding the firm from whose perspective you are analyzing the industry is also important .

Below are ten factors to consider when examining the company.

#1: Performance

What is the historical performance of the company?

What is its market share?

If profits are falling, what is the cause of the issue?

#2: Competitive Advantage

What resources and capabilities does the company possess?

Consider tangible assets (property, plant, equipment, inventory, and employees) and intangible assets (brand, patents, copyrights, and specialized knowledge).

How sustainable are the company’s advantages? What are the company’s weaknesses, and can they be remedied?

#3: Competitive Strategy

What is the company’s competitive strategy?

Is the company producing products that are low-cost or differentiated?

Which customer segments does the company target? What are the company’s pricing, distribution, and growth strategies?

#4: Products

What does the company offer, and how does it benefit consumers?

Does the product have any downsides or side effects?

Is the product differentiated?

How does the company’s product offering compare with the competition?

Are there substitutes available?

#5: Finances

If the company is considering a particular course of action, does it have sufficient funds available?

Financing may be secured from various sources, including internal cash reserves, bank loans, shareholder loans, bond issues, or the sale of shares.

How many units will the company need to sell to cover the cost of the project?

Is there sufficient market demand?

#6: Cost Structure

To understand a company’s cost structure, it helps to break each business unit down into the collection of activities performed to produce value for customers.

How each activity is performed, and its economics will determine a firm’s relative cost structure within its industry.

Are costs predominantly fixed or variable?

How does this compare with the competition?

#7: Organisational Cohesiveness

Understanding a firm’s inner workings is important since competitive strategies can fail if they conflict with its culture, systems, and general business.

The organizational aspects of a firm can be examined using the McKinsey 7 S Model.

#8: Marketing

How do customers perceive the company and its products?

How does the company communicate with customers?

#9: Distribution Channels

What distribution channels does the company use to reach customers?

Are there other channels that are more cost-effective or preferred by customers?

#10: Customer Service

Does the company have a customer loyalty program?

How does the company interact with customers and support its customers post-sale?

Are employees empowered to solve problems and delight customers?

Case interview framework 4: PESTEL (or PESTLE)

PESTEL is an acronym for five factors – Political, Economic, Social, Technological, Legal, and Environmental – that can influence a company’s performance or strategic decisions.

A PESTEL analysis examines these external forces that can have strategic implications for the company .

And conducting a PESTEL analysis can be helpful for three reasons:

Understanding the facts : Understanding the big picture can help a business make informed decisions and avoid incorrect assumptions based on past experience.

Anticipating change : Understanding the macro environment can help a business identify trends and anticipate change, allowing it to take advantage of opportunities and manage potential threats.

Avoiding failure : Understanding the macro environment can help a business (and its investors) to identify projects that are likely to fail due to unfavorable conditions.

Below is a list of some of the general issues the interviewee should consider:

Political forces

• Are there any legal or political restrictions, such as new legislation, that would impede the product’s sale?
• What regulations must be addressed before introducing the product (health regulations/antitrust, etc.)?

Economic factors

• Has the economy’s overall performance impacted the sale of my product? Interest rate? Unemployment figures? Exchange rates? Balance of Payments? Free-Trade Agreements?

Socio-cultural forces

• What norms/cultural practices should be considered when entering a new market?
• Are there any trends in religious practices/traditions/rituals that should be considered?

Technological factors

• What are some of the technological trends in the market that could help/diminish the sale of the product (e.g., paper-based media vs. internet)?
• What R&D advancements were made by the market that would have a long-term impact on the very survival of the company (e.g., pay-per-view video vs. video stores)?

Environmental factors

• How does the business affect the environment?

Legal factors

Finally, the folks from the YT channel Business To You have made a great video about the PESTLE model:

Case interview framework 5: Profitability framework

There’s a good chance that the cases discussed during the interview will often touch on issues of declining profitability .

This framework is very helpful in organizing your thoughts and methodically approaching profitability problems.

According to the Profitability Framework’s opening statement, profit is a function of revenue and costs.

A company’s profitability declines when revenue has dropped, costs have risen, or both.

The goal is to identify the component of the equation that is reducing profitability and determine the best course of action for fixing it.

A quick note:

Variable costs are costs that vary with the units sold.

Fixed costs are costs that do not vary with the units sold.

Case interview framework 6: Unit contribution

The following is a framework you can use to help you understand the economics of the product’s contribution.

This framework is critical when forecasting the overall success of the product .

Case interview framework 7: Break Even

A break-even analysis tells you how many units of a product must be sold to cover the fixed and variable production costs.

For instance, this is important when deciding whether to launch a new product.

Also, a break-even analysis concerns a product’s contribution margin (selling price minus variable costs per unit; see the previous section).

So, the contribution margin is the excess between the selling price of the product and the total variable costs .

For example, if an item sells for $100, the total fixed costs are $25 per unit, and the total variable costs are $60 per unit, the product’s contribution margin is $40 ($100 – $60).

This $40 reflects the revenue collected to cover the remaining fixed costs, which are excluded when figuring the contribution margin.

Case interview framework 8: ROI

ROI is an acronym for Return On Investment.

The ROI is a performance measure that a company can use to evaluate the return from an investment or to compare the returns of several different investments .

For example, if you spent $10,000 and made $15,000, your ROI would be 50%.

[ ( $15,000 – $10,000 ) / $10,000 ] x 100% = 50%

Case interview framework 9: Payback

A payback period is the time needed to recover the cost of an investment.

Simply put, it is the time an investment reaches a breakeven point .

For example, if a company invests $300,000 in a new production line, and the production line then produces a positive cash flow of $100,000 per year, then the payback period is 3 years.

Another example:

You are offered to invest in the project $120K.

The project will bring on average $30K a year in net profit.

Using the payback formula, we get a payback period for capital invested of four years (we divided 120,000 by 30,000).

Case interview framework 10: Value Chain

A Value Chain Analysis is a concept first described and popularised by Michael Porter in his 1985 book, Competitive Advantage .

Value Chain Analysis involves identifying all the important business activities and determining which ones give the company a competitive advantage .

Also, a value chain analysis can be performed to identify potential root causes of a business problem.

For instance, a Value Chain Analysis can be undertaken by following three steps:

• Break down a company into its key activities under each heading in the model.
• Identify activities that contribute to the firm’s competitive advantage by giving it a cost advantage or creating product differentiation.
• Develop strategies around the activities that provide a sustainable competitive advantage.

Cost advantage

A business can achieve a cost advantage over its competitors by understanding the costs associated with each activity.

And then organizing each activity so that it is as efficient as possible.

Porter identified ten cost drivers related to each activity in the value chain : 1. Economies of Scale 2. Learning 3. Capacity utilization 4. Linkages among activities 5. Interrelationships among business units 6. Degree of vertical integration 7. Timing of market entry 8. Firm’s policy on targeting cost or product differentiation 9. Geographic location 10. Institutional factors (regulation, union activity, taxes, etc.)

A firm can develop a cost advantage by controlling these ten cost drivers better than its competitors.

A firm can achieve product differentiation by focusing on its core competencies to perform them better than its competitors .

Product differentiation can be achieved through any part of the value chain.

For example, procurement of unique inputs and not widely available to competitors, providing high levels of product support services, or designing innovative and aesthetically attractive products.

Case interview framework 11: Ansoff Matrix

The Product/Market Expansion Matrix (or “Ansoff Matrix” as it is sometimes called) was developed by a Russian-American mathematician named Igor Ansoff.

And it was first explained in his 1957 Harvard Business Review article entitled Strategies for Diversification.

The Product/Market Expansion Matrix can help a firm define a product-market growth strategy by focusing on four growth alternatives :

1. Market Penetration; 2. Market Development; 3. Product Development; and 4. Diversification.

The four alternative growth strategies are:

Market Penetration : A strategy to increase sales without departing from the original product-market strategy. This involves increasing sales to existing customers and finding new customers for existing products.

Market Development : A strategy to sell existing products to new markets (normally with some modifications). Ansoff described this as a strategy “to adapt [the] present product line … to new missions.” For example, Boeing might adapt a passenger aircraft model for cargo transportation.

Product Development : A strategy to sell new products, with new or altered features, to existing markets. Ansoff described this as a strategy to develop products with “new and different characteristics such as will improve the performance of the [existing] mission.” For example, Boeing might develop a new aircraft design with improved fuel economy.

Diversification : A strategy to develop new products for new markets, which can be related to the current business (e.g., vertical integration or horizontal diversification) or unrelated (e.g., conglomerate diversification).

Learn how to create custom case interview frameworks

The question then becomes, “How do you use business frameworks in consulting interviews?”.

On the Internet, numerous suggestions exist for how you ought to proceed.

However, the two main schools of thought are Victor Cheng’s frameworks and Marc Cosentino’s Case In Point.

However, these two approaches have one thing in common: they both attempt to impose pre defined frameworks on cases .

For instance:

For a market entry case, those resources tell you the market entry framework you should use.

And for an M&A case, those resources tell you exactly the merger and acquisition framework you should use.

They push you to adapt the problem to your tools .

Since every case is different, this will inevitably result in average outcomes and rejections.

For instance, 10 different M&A cases should have 10 different merger and acquisition frameworks. 

Another example: 10 different market entry cases should have 10 different market entry frameworks. 

So, you have to learn how to create custom case interview frameworks.

You must create your own unique frameworks using First Principle Thinking .

Those case interview frameworks must be MECE .

To do so, I’ve created free training to help you in that journey .

You can sign up for free with the link below.

Case interview frameworks: Final words

I hope you enjoyed this updated guide to business frameworks.

Those consulting frameworks will help you join a top consulting firm.

Now, I’d like to hear from you:

Which frameworks from today’s guide do you use the most?

Or which frameworks are new to you?

Has this guide helped you develop your business acumen?

Let me know by leaving a quick comment below right now.

To your success,

P.S. Need help with your case interview preparation?

Check whether our coaching program is a good fit. 

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We have a unique coaching model and deliver amazing results .

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Case Interview Frameworks: Important Tools to Ace the Case [2024]

• Last Updated January, 2024

Former McKinsey Engagement Manager

Common Case Interview Frameworks

Commonly Used Frameworks

Why Do Interviewers like them?

The Most Efficient Way to Learn Frameworks?

Frameworks Can Help Your Case Interview

How Should You Use Case Interview Frameworks?

2 Basic Frameworks You Need To Know

A case interview framework is a structured way of thinking about a particular type of business problem. It breaks a business problem into the component parts that need to be analyzed to identify the root cause of the problem and develop a solution.

Case interview frameworks are important because consulting interviewers don’t want a canned solution from the front page of the Wall Street Journal or a business school textbook. They  look for candidates who have a structured process for thinking through the key aspects of a business problem to find its solution.

This structured process is easy to show by using a case interview framework.

In this article we’ll discuss:

• Examples of case interview frameworks,
• Why consulting interviewers like case interview frameworks,
• How frameworks help ensure you’ll solve your case interview,
• 2 Basic frameworks to learn before you interview,
• Commonly used case interview frameworks,
• The most efficient way to learn frameworks, and 
• How you should use frameworks in your consulting interviews. 

Let’s get started!

Multiple different case frameworks exist because companies face many different types of problems. A case framework that will help a company think through the marketing approach needed to support a new product launch is not the same as the one it will use to decide if it wants to cut costs.

Commonly used case interview frameworks include:

• The BCG 2 x 2 Matrix
• The Profitability Formula
• The McKinsey’s 7S Framework
• Porter’s 5 Forces

Case interview frameworks can be tailored to the issues in a consulting case to highlight your structured problem-solving skill and ensure you solve the case.

Why Do Interviewers Like Case Interview Frameworks?

A consultant who has memorized a textbook solution to fixing a business problem will know what to do when they see a client with  that  particular problem.

But all clients—even ones in the same industry—are different. They might have different fixed and variable costs, sell to a market segment with unique requirements, have a different management structure, or use a different technology or production process to manufacture their product.

Because of this, even if they face a similar problem to the one in the textbook, the tools needed to solve the problem might be different.

Because all client problems are different, management consultants don’t memorize answers to business problems. They use a structured process that helps them find the solution, no matter what the client’s problem is.

The prospect of figuring out the solution to a business problem you’ve never seen before might sound intimidating. Luckily, case interview frameworks can help identify the key issues to be addressed. You can think of them as containing the building blocks you can use to solve a case study problem.

Once you’re familiar with common frameworks, you can use them to build your own case interview frameworks to analyze the issues specific to any consulting case you’re given.

Case Frameworks Can Help You Ace Your Interview

A list of commonly used business frameworks can look more like alphabet soup than something that can help you solve a consulting case study problem. Are they really worth learning?

Yes. Frameworks can help you make sure you don’t forget key aspects that need to be considered to address a particular type of business problem. Because of this, they’re valuable tools when you’re doing interview prep. Take one of the simplest business frameworks: Profitability.

If you are given a case study interview question that involves profitability, you’re going to want to be familiar with this formula. 

It’s not important that you use the exact same terms in precisely the same order. What’s important is that you remember the key components of profitability. If you examine each of these 4 key components, you’ll find out where to look more closely to find the answer to the client’s problem. 

If you forget one of these key components of profitability, you could spend the twenty-five minutes you have to solve the case study interview question probing the wrong areas and never find the solution.

Case frameworks are tools that ensure you look at all the key aspects of a business problem. From there, you still need to interpret the information you receive from your interviewer and use your findings to develop a solution.

But getting the key facts you need to solve the case is a critical first step in your consulting interview prep.

2 Basic Case Interview Frameworks to Help You Structure Any Case Question

If this is the first time you’ve even heard of a case interview framework, the best place to start your case interview prep is with 2 basic frameworks you can use to address any business problem. Continue reading this section to learn about them.

If you’ve studied business at the undergraduate or graduate level , the basic frameworks can still help you. But you may want to skip down to Commonly Used Business Frameworks to begin your consulting interview prep.

Profitability Framework

The most basic way of looking at a case is to consider whether it asks you to solve a profit and loss issue, or not. This is the most common case type you will encounter because as management consultants we are paid to grow businesses and growing businesses is measured in profits and revenue.

If the interview question addresses a business’s profits and losses (P&L), you can apply the profitability formula to solve the problem. If the question only addresses one component of profitability — either costs or revenues, you can use the relevant segment of the formula to address it.

As mentioned above, the profitability formula is:

Price – How much does the product sell for?

Units Sold – How many products were sold over the period being considered?

Fixed Costs – Costs that you incur just because you are in business regardless of how many units you sell. Examples: factory rent, equipment depreciation, compensation for salaried employees, and property taxes. A way to think about fixed costs is that a cost that does not change over the short-term, even if a business experiences increases or decreases in its sales volume.

Variable Costs – Costs that only incur when you begin to produce units (if you sell nothing you have no variable costs). Examples: sales commissions, credit card transaction costs, and sales taxes. A way to think about variable costs is that a cost that does change over the short-term. More sales volume will mean more variable costs.

The first thing you want to do in a profitability case study interview question is to understand which component of the profitability formula has the biggest impact on the client’s bottom line over the time period you’re considering. Go through each of the 4 parts of the formula to figure that out.

Next, you’ll want to look beyond the formula. If nothing internal to the client has caused the change in profitability, there must be an external factor affecting it. 

External factors that might affect a company’s profitability include a new product introduction, price change, or promotion made by a competitor. They could also include a change in the regulatory environment or in the level of demand from customers.

Example Using the Profitability Framework in a Case Interview

The manufacturer of fidget turners, a simple toy that allows children to expend their excess energy without getting out of their seat and disrupting their classroom, needs help with a profitability problem. 

While their toys are widely popular, the company is losing money. What is the source of their problem?

The consulting candidate asks questions and finds that:

• Price – There have been no recent changes in the price the fidget turner is sold for.
• Units sold – Demand for the product has risen substantially. It’s popular among children with attention deficit disorder. The market for the fun toy has expanded to other children and even adults.
• Fixed cost – There have been no recent changes in the company’s fixed costs.
• Variable cost – The cost of the underlying materials used to make the product have risen substantially. The product is comprised primarily of plastic and ball bearings. The cost of plastics has increased with an upward trend in the prices of petrochemical products.

As a result of this analysis, the candidate says that the change in the manufacturer’s profitability is driven by a change in their variable costs – specifically plastics. 

She recommends that the company either find a substitute material that it can use to manufacture its products at lower cost or increase the price of fidget turners.

Non-profit Case Framework

A non-profit question might have a charitable organization, an educational institution, or a government agency as the client. They might also have a business client, but address an issue that is not related to profit and loss such as employee retention or branding.

The key to answering a non-profit case study question is to understand the key performance index for the client. The key performance indicator, or KPI, is the measure the client is trying to improve or maximize. For example:

• A public school system might be trying to improve student scores on a state-wide standardized test.
• A government agency might be trying to increase the number of free lunches provided to children of families under a certain income threshold over the summer months.
• A fast-food chain might be trying to reduce employee turnover.

When addressing a non-profit case study interview question, first, determine what the client’s key performance indicator is. Once you’ve determined the KPI, break it down into relevant components that allow you to dive deeper into the problem and understand where the client is performing well and where things have taken a turn for the worse.

For example, if the client is a government agency trying to ensure that low-income children have enough to eat over the summer months when free school lunches aren’t available, the KPI might be the number of qualifying free lunches provided. These lunches could be further broken down geographically, by either town or county.

Because these lunches are often provided by schools, the KPI could also be broken down by the age of the child receiving the lunch (grammar-school-aged, middle-school-aged, and high-school-aged). 

These breakdowns would let you understand whether a decline in lunches was caused by an issue affecting one town, or an issue primarily affecting a particular age group. Or, perhaps the decline in free lunches served was consistent across the entire program area and target population.

As with a profitability case, you also want to consider both factors internal to your client and external factors that affect your client’s KPI. 

Benchmarking your client’s performance relative to similar agencies in other states, or relative to the results of groups that provide different types of assistance to the same target audience in the same geographic region can help.

Example Using the Non-Profitability Framework in a Case Interview

• A state agency that provides free lunches to low-income children found that the number of lunches served over the summer declined substantially from the prior year. The agency wanted to understand the root cause of this decline.

The candidate asked questions about the operations that the agency oversees. He found that:

• Overview – The agency spent 10% less on its summer lunch program this year than in prior years.
• KPI – That the agency’s key performance indicator is the number of lunches provided to low-income children.
• The overall economic health of the state had not changed substantially from the prior year.
• The decline in lunches was focused specifically in a couple of geographic regions – low-income cities where schools were closed over the summer for renovations and where lunches could not be served.

As a result of his analysis, the candidate concluded that while coming in below budget is usually a good thing, for this state agency, it was not. The agency’s KPI was the number of meals served to needy children and the savings came from not being able to provide services in a couple of cities. This meant that children were going hungry.

The candidate recommended that each year, the agency find out in advance if schools that serve the free lunches they fund will be closed over the summer. 

If they will be closed, the agency can look for an alternate location where they can provide lunches for children, such as a community center.

Practice using the profitability and non-profit frameworks to solve case study interview questions until you feel comfortable using them. You can find more about How to Practice Consulting Case Study Questions and find Examples of Consulting Case Study Questions on the My Consulting Offer website.

Commonly Used Case Interview Frameworks that Will Help You Ace Your Case

Once you have mastered the profitability and non-profit frameworks, you can add frameworks that have been developed to analyze specific types of business problems to your case study interview prep tool box.

While it is important to know these frameworks to build out your own business acumen, remember that coming in with a canned framework such as these will likely not get you the offer. So we recommend you become familiar with these frameworks but DON’T MEMORIZE THEM JUST TO USE THEM ON THE INTERVIEW.

Case Prep Tool 1: BCG 2 x 2 Matrix

This framework can be used to identify which business segments the company should continue to invest in, and which should not receive capital or should even be sold off. This framework is called a 2 x 2 it categorizes each segment by 2 different factors:

• Market growth and
• Market share relative to the competition.

This categorization puts each business segment into one of four buckets:

Star – A business segment that has high growth and high market share is often very profitable. These business segments should receive further investment so they can continue to grow.

Cow – A business segment with low growth but high market share is likely to be a stable, profitable business. The profits of this type of business can be reaped over time to invest in other, higher growth business segments.

Dog –  A business segment with low growth and low market share is often not profitable and not likely to improve without substantial investment. The company should consider divesting these business segments to free up cash for more profitable businesses.

? – A business segment with high market growth but low share requires further study. Is further investment likely to result in market share growth, allowing this business segment to become a star? Or is it likely to become a dog over time?

Case Prep Tool 2: SWOT Analysis — Strengths, Weaknesses, Opportunities and Threats

• Internal or external — Are they something the company has control over or not, and
• Helpful or Harmful.

This categorization puts each factor affecting the business into one of 4 buckets:

Strengths –  A factor that is internal to the organization and helps it to achieve its objectives is a strength that can be leveraged to improve performance over time. Example – strong engineering capabilities.

Weaknesses – A factor that is internal to an organization and harmful is a weakness. This is something the company will need to work to overcome. Example – weak brand awareness in the target market.

Opportunities – A factor that is external to the business that is helpful is an opportunity that can be leveraged to improve profitability. Example – a competitor experiencing production constraints.

Threats – A factor that is external to the business but harmful is something the business should seek to overcome or the limit risk of. Example – new government regulation in their market.

The SWOT Analysis framework can be used to identify actions that a company should take to capitalize on strengths and opportunities and minimize weaknesses and threats.

Case Prep Tool 3: 3 Cs Framework

The Customer – Questions to consider include: Who is the customer? What are their requirements for the product or service? What segments exist in the market? What does each segment look like in terms of growth rates, price sensitivity, etc.?

The Company – Questions to consider include: What is the company’s current product or service offering? How is it differentiated from that of the competition? Does the company have internal capabilities that they can use to create an advantage relative to competitors? What are the company’s current market share and growth rate? How strong is it financially?

The Competitors –  Questions to consider include: What competitive products or services are in the market and how do they compare to the company’s product? This analysis should include not only products that are directly competitive, but also substitutes for the company’s products. 

What internal capabilities do competitors have that could give them an advantage relative to the company’s product?  Are their barriers to entry into the market or is it easy for new competitors enter at any time?

The better a company understands its customers, develops a differentiated product to better serve their customers, and creates barriers that prevent competitors from bringing equivalent products to market, the better strategic position the company is in.

Case Prep Tool 4: 4 Ps Marketing Framework

The 4 Ps framework is a tool used in developing a marketing strategy that will help differentiate a company’s product from competitive products. The 4P framework breaks down the key components of analysis into:

Product – Whether the company is selling a tangible product or a service, they must be clear on what they are offering customers. Is their offering a bare-bones product or does it have a quality level or features that set it apart from alternatives?

Price – The price charged for a product can be set high or low, depending on what it will command in the marketplace. Price has an important impact on sales but also (and inversely) on the company’s bottom line.

Promotion – Potential customers must be made aware that the product exists, understand what distinguishes it from competitive products, and be encouraged to buy it. Promotion includes advertisements, public relations, social media, email marketing, discounts, etc.

Placement – Potential customers need to be able to purchase the product, either at a store or online. Placement can be prominent — at the front of a store or on an endcap — or not. Placement is about making the product easy to find and convenient to buy.

What Is the Most Efficient Way to Learn Frameworks?

The most efficient way to learn case interview frameworks is to first focus on the 2 that can help you analyze any case study interview question— the profitability and non-profit frameworks.  

You do not need a degree in business to be able to use these tools. Once you feel comfortable using the profitability and non-profit frameworks, you can add other business frameworks to your consulting interview prep.

Tailor Your Own Case Interview Frameworks

The most important thing to remember about frameworks is that no one expects you to present one straight from a business textbook and use it in a case interview. 

In fact, consultants prefer candidates to create their own case interview frameworks for analyzing a case rather than to use an off-the-shelf framework. 

Creating your own case interview frameworks shows that you’ve taken the time to consider the specific client problem you’ve been asked to address and have the capability to come up with the key elements of analysis on your own.

This is the secret to how many of our clients are able to gain their offers. They begin their consulting interview prep by learning what a framework is, then mastering the profitability and non-profitability frameworks, and finally learning to build their own case interview frameworks.

Congratulations on making it to the end of our crash course on case interview frameworks! 

We’ve covered:

• What case interview frameworks are,
• Why consulting interviewers love case interview frameworks,
• How to use frameworks help ensure you’ll solve your case,
• The 2 Basic frameworks to learn today,
• Commonly used frameworks,
• How to best use frameworks in your consulting interviews. 

Still have questions?

If you still have questions on how to develop your own case interview frameworks, leave them in the comments below. We’ll ask our My Consulting Offer coaches and get back to you with answers.

Also, we have tons of other articles diving into the things you need to know to get an offer from a top consulting firm, including:

• Our Ultimate Guide to Case Interview Prep ,
• MECE – Mutually Exclusive, Collectively Exhausting , and
• Tips on Case Interview Practice .

Help with Case Study Interview Preparation

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We’ve helped people who are just beginning the case interview process to people who only had less than 1 week to prepare including undergrads, MBAs, PhDs, and working professionals.

We want you to be successful in your consulting interviews too.

If you want a step-by-step solution to land more offers from consulting firms, then  grab the free video training series below.  It’s been created by former Bain, BCG, and McKinsey Consultants, Managers and Recruiters.

It contains the EXACT solution used by over 500 of our clients to land offers.

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Mastering Case Study Frameworks: A Comprehensive Guide for Success

Note: Don’t forget to read and work through our Masterguide to Case Frameworks if you’re still struggling with your profitability case frameworks after reading this article.

Table of Contents

Case study frameworks are crucial tools for management consultants and aspiring candidates in the consulting industry. They provide a structure to analyze and solve complex business problems, helping consultants deliver valuable insights and recommendations to their clients. In this comprehensive guide, we dive into the most essential case study frameworks, their applications, and how to effectively use them in your consulting practice.

Introduction to Case Study Frameworks

Case study frameworks are structured approaches used to analyze and solve business problems during consulting case interviews and client engagements. These frameworks help consultants break down complex problems into smaller, manageable components, allowing for a systematic and efficient approach to problem-solving.

Consultants Create Frameworks to Run Teams

Remember, frameworks are not just to be memorized. They are your tailored, objective-driven, approach to solving a problem.

Because frameworks are simply the modules that a consulting team would assign to their team members.

When creating your frameworks, think to yourself, can my buckets be assigned successfully to Team Member 1, Team Member 2, and Team Members 3 & 4?

The Importance of Case Study Frameworks

Case study frameworks are valuable for several reasons:

• They provide a structured way to approach business problems, making it easier to identify the root cause and develop actionable solutions.
• They help consultants effectively communicate their thought process, findings, and recommendations to clients and interviewers.
• They enable consultants to leverage their experience and knowledge by applying proven methodologies to new business situations.

Flexibility and Adaptability in Applying Case Frameworks

It’s essential to understand that case frameworks are not one-size-fits-all solutions . Instead, they should be viewed as flexible tools that can be adapted, combined, and customized to fit the specific problem at hand. In other words, the best case frameworks are those that can be tailored to address the unique challenges and requirements of each client and situation.

In the following sections, we will discuss some of the most commonly used case study frameworks in management consulting. We will cover their key components, when to use them, and how to apply them effectively.

Profitability Case Frameworks

The profitability framework is a fundamental case study framework that focuses on understanding the drivers of a company’s financial performance. It is most applicable in cases where the client’s primary objective is to improve financial performance, either by increasing revenue, reducing costs, or both.

If you want to read even more on profitability and how to approach it for any case type , take a look at our article here .

Do Not Regurgitate Revenue Cost

As we mentioned above, it is absolutely critical that you stay flexible and adaptable with your frameworks. This is especially true for Profitability. Gone are the days of a generic Revenue Cost framework.

Consultants do not solve real life projects with Revenue and Cost and nor should you in your cases.

Adapt and Adjust Based on the Case

The most important thing to remember about a profitability framework is that it needs to be adjusted to the case . Bucket options include (but are not limited to):

• Competition
• Store (breakdown)
• External/Macro
• Revenue (in context/tailored)
• Cost (in context/tailored)
• Value chain

How do you decide which buckets to use? Well, it depends on the case! For example, if the prompt tells you there are 3 products our company has and we just launched a 4th, of course you need a products bucket. If we are McDonalds (international, different models worldwide), of course you need to break it down by geography.

Listen to how I break this down to a candidate of mine here:

As an example, say we have a food delivery company that has previously focused on topline revenue growth, has negative margins, and now needs to become profitable. How would you create a framework for this? (Please don’t say revenue cost!)

Here’s one option (of multiple):

This probably looks different to what you expected. But it’s also why my candidates consistently get interviewer feedback saying their frameworking is the best they have ever seen.

Remember, every profitability case should have a slightly different set of buckets, based on the problem you are solving.

Again, for a deeper breakdown, check out our article here .

Applying the Profitability Framework

To apply the profitability framework effectively, follow these steps:

•   Identify the relevant components (revenue, costs) and drivers (price, quantity, variable costs, fixed costs) that are most pertinent to the client’s problem.
•   Analyze the current performance of these components and drivers, comparing them against industry benchmarks and competitors.
•   Identify opportunities for improvement and develop recommendations to address these opportunities, considering both short-term and long-term implications.

When identify which areas to pursue (across profit, margin, revenu, and cost), you want to tackle any of the following:

• What’s the biggest? – This refers to the biggest piece of the revenue/expenditure pie, which has the potential to significantly impact the end result.
• What’s changing the most? – Rapid changes in a revenue/cost segment could be a significant driver and potentially fixable.
• What’s the easiest to answer or eliminate? – Opt for quick wins. These are typically yes/no types of questions that can eliminate many other factors.
• What’s the most different? – Look for differences between companies, business units, products, and geographies. Differences often equate to opportunities.
• What’s the most likely? – This is self-explanatory and refers to the most probable source of revenue/cost issues

Market Entry Case Frameworks

The market entry framework is used to evaluate the attractiveness and feasibility of entering a new market or launching a new product. It helps consultants assess the potential opportunities and risks associated with market entry and develop a comprehensive strategy for successful market penetration.

Key Components of the Market Entry Framework

Just like with profitability, you have to tailor your framework to the case prompt.

One option for a market entry framework is as follows:

•   Market Analysis : Assessing the size, growth, and dynamics of the target market.
•   Competitive Landscape : Evaluating the competitive forces and players in the market.
•   Internal Capabilities : Analyzing the company’s strengths, weaknesses, and resources to enter the market.
•   Entry Strategy : Determining the best approach to enter the market, such as organic growth, joint ventures, or acquisitions.

But, the above is just one option. We could also have a Market, Company/Competition, and Financials framework. However, ideally we would articulate it as follows:

Now, remember that all of the above is just for the question Should We Enter This Market?

A different market entry question might be “Our Client has determined that x market is attractive and wants to enter. They have brought us to figure out if we should”. This needs a different framework.

Or, the question might be “Our client has decided to enter x market. How should we enter?” The above frameworks don’t work here!

As a final example, perhaps the case tells us “We are evaluating between 3 markets to enter. Which one should we enter?” Again, new framework needed.

To understand how to tackle these more unconventional market entry cases, please take a look at our 360 degree course .

The Porter's Five Forces Case Framework

Porter’s Five Forces is a widely recognized case study framework developed by Harvard Business School professor Michael E. Porter. It helps consultants analyze the competitive forces shaping an industry and understand the attractiveness and profitability of a market.

Key Components of Porter’s Five Forces Framework

The Porter’s Five Forces framework consists of five main components:

•   Threat of New Entrants : The ease with which new competitors can enter the market and challenge established players.
•   Bargaining Power of Suppliers : The ability of suppliers to influence the terms and conditions of their business relationships with companies in the industry.
•   Bargaining Power of Buyers : The ability of customers to influence the terms and conditions of their business relationships with companies in the industry.
•   Threat of Substitute Products or Services : The likelihood that customers will switch to alternative products or services that fulfill the same need.
•   Rivalry Among Existing Competitors : The intensity of competition among companies within the industry.

When to Use Porter’s Five Forces Framework

The Porter’s Five Forces framework is most applicable in cases where the client is considering entering a new market, launching a new product, or assessing the competitive landscape of an industry.

Applying Porter’s Five Forces Framework

To apply the Porter’s Five Forces framework effectively, follow these steps:

•   Analyze each of the five forces, considering their impact on the industry’s attractiveness and profitability.
•   Identify the key drivers and trends influencing each force and assess their potential implications for the client.
•   Develop recommendations to address the opportunities and challenges posed by the competitive forces, considering both short-term and long-term strategies.

The SWOT Analysis Framework

The SWOT analysis is a widely recognized case study framework that helps consultants evaluate a company’s internal strengths and weaknesses as well as external opportunities and threats. This framework enables consultants to identify key strategic issues and develop recommendations to address them.

Key Components of the SWOT Analysis Framework

The SWOT analysis framework consists of four main components:

•   Strengths : The internal capabilities and resources that give the company a competitive advantage.
•   Weaknesses : The internal limitations and vulnerabilities that hinder the company’s performance.
•   Opportunities : The external factors that the company can capitalize on to improve its performance.
•   Threats : The external factors that pose risks to the company’s performance and success.

When to Use the SWOT Analysis Framework

The SWOT analysis framework is most applicable in cases where the client is seeking to improve its overall performance or address specific strategic issues.

Applying the SWOT Analysis Framework

To apply the SWOT analysis framework effectively, follow these steps:

•   Identify the company’s key strengths and weaknesses, considering factors such as resources, capabilities, and market position.
•   Analyze the external environment, identifying opportunities and threats that may impact the company’s performance.
•   Develop recommendations to leverage the company’s strengths, address weaknesses, capitalize on opportunities, and mitigate threats.

Growth Case Frameworks

The growth strategy framework focuses on identifying and evaluating potential avenues for a company to achieve revenue and market share growth. This framework helps consultants develop a strategic roadmap for the client’s expansion and growth.

Key Components of the Growth Strategy Case Framework

One growth strategy case framework can be broken down into four main components:

•   Market Penetration : Increasing sales of existing products or services in current markets.
•   Market Development : Entering new markets with existing products or services.
•   Product Development : Introducing new products or services in existing markets.
•   Diversification : Expanding into new markets with new products or services.

Remember, however, just like with profitability and market entry cases, you need to listen to the prompt and adjust this framework accordingly to the prompt and company context. Different growth prompts will have different case frameworks.

When to Use the Growth Strategy Case Framework

The growth strategy framework is most applicable in cases where the client is seeking to expand its business, increase market share, or explore new growth opportunities.

Applying the Growth Strategy Framework

To apply the growth strategy framework effectively, follow these steps:

•   Assess the company’s current performance, market position, and growth potential.
•   Identify potential growth opportunities across the four growth strategy components, considering factors such as market attractiveness, competitive landscape, and internal capabilities.
•   Evaluate the feasibility and risks associated with each growth opportunity, taking into account factors such as market entry barriers, resource requirements, and potential synergies.
•   Develop a strategic roadmap for the client’s growth, prioritizing the most attractive and feasible growth opportunities.

Tips for Successfully Applying Case Study Frameworks

To effectively apply case study frameworks in your consulting practice, consider the following tips:

•   Don’t rely solely on case frameworks : Remember that frameworks are just one tool in your problem-solving toolkit. Use them as a starting point, but be prepared to adapt and customize them to fit the specific problem at hand.
•   Listen carefully to the client’s needs : Understand the client’s objectives, priorities, and constraints before selecting and applying a framework. Tailor your approach to address the client’s unique needs and circumstances.
•   Stay flexible and adaptable : Be prepared to adjust your approach as new information emerges or as the client’s needs evolve. Be open to combining and customizing frameworks to develop a tailored solution.
•   Communicate your thought process clearly : Clearly explain the rationale behind your chosen framework, the steps you took to apply it, and the insights and recommendations that emerged from your analysis. This will help ensure that your client and interviewers understand and appreciate your approach.

Enroll in our 360 course . This comprehensive course focuses heavily on building up your frameworking optimally. To get a better understanding of how to create killer case frameworks, start with our master article on case frameworks.

Mastering case study frameworks is crucial for success in the consulting industry. By understanding the key components, applications, and best practices for applying these frameworks, you can develop a strong foundation for effective problem-solving and strategic thinking.

Remember to stay flexible, adaptable, and customer-centric in your approach, and always be prepared to learn and grow as you refine your skills in applying case study frameworks. By doing so, you can unlock unparalleled insights and deliver exceptional value to your clients and interviewers alike.

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Mastering Consulting Case Frameworks: A Comprehensive Guide

Looking to excel in consulting case interviews? Our comprehensive guide to mastering consulting case frameworks is here to help! Learn the essential skills and strategies needed to ace your next case interview and land your dream consulting job.

Posted July 31, 2023

Featuring Nick V.

Cracking the Case Interview Workshop

Wednesday, may 8.

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Aspiring and current consultants alike are often presented with a wide range of complex business problems that require critical thinking, flawless logic, and a structured approach to solve. This is where consulting case frameworks come in handy. In this comprehensive guide, we will explore the different types of consulting case frameworks, tips for analyzing data, and how to prioritize key issues to make a compelling recommendation at the end of your analysis.

What are Consulting Case Frameworks and Why are they Important?

Consulting case frameworks are structured approaches to analyzing and solving a complex business problem. Consulting firms use case interviews to evaluate a candidate's ability to break down a problem into its essential parts, identify key issues, develop hypotheses, and recommend solutions. Mastering consulting case frameworks is crucial to succeeding in these interviews and, ultimately, becoming a successful consultant.

There are several types of consulting case frameworks, including profitability, market entry, and mergers and acquisitions. Each framework provides a structured approach to analyzing a specific type of business problem. For example, the profitability framework helps consultants identify the key drivers of a company's profitability and develop recommendations to improve it. Similarly, the market entry framework helps consultants evaluate the feasibility of entering a new market and develop a strategy for doing so. By mastering these frameworks, consultants can quickly and effectively analyze complex business problems and provide valuable insights to their clients.

The Benefits of Mastering Consulting Case Frameworks

When you master consulting case frameworks, you will not only be successful in consulting case interviews but also in your job as a consultant. You will be able to approach client problems with a structured approach, baseline knowledge, and deliver more accurate and effective recommendations. Your approach will also lead to better communication and collaboration with your team and your clients

Additionally, mastering consulting case frameworks can also lead to increased confidence in your problem-solving abilities. By having a clear and structured approach, you will feel more equipped to tackle complex problems and provide valuable insights to your clients. This confidence can also translate to other areas of your work and personal life, as you develop a strong problem-solving mindset.

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How to Approach a Consulting Case Framework

The first step in approaching a consulting case framework is to identify the problem or objective. Understanding the issue at hand will help you determine which framework to apply and where to focus your attention. You need to break down the problem into its essential parts and brainstorm with the interviewer to identify the key issues, limitations, and underlying factors.

Once you have identified the key issues, it is important to prioritize them based on their impact on the problem. This will help you determine which issues to tackle first and which ones can be addressed later. It is also important to consider the resources available to you and the timeline for solving the problem.

After prioritizing the issues, you can start applying the appropriate framework to analyze the problem. There are several frameworks that can be used, such as SWOT analysis, Porter's Five Forces, and the BCG matrix. It is important to choose the framework that best fits the problem at hand and to adapt it as needed throughout the analysis.

Breaking Down the Different Types of Consulting Case Frameworks

Consulting case frameworks can be broken down into three categories: business situation frameworks, market analysis frameworks, and profitability frameworks.

Business situation frameworks are used to identify the root cause of a business problem or opportunity. It includes frameworks such as the 4 Cs (Company, Customer, Competition, and Collaborators), McKinsey 7S, and SWOT (Strengths, Weaknesses, Opportunities, Threats).

Market analysis frameworks are used to analyze external factors that might impact the business. It includes frameworks such as PESTLE (Political, Economic, Social, Technological, Legal, and Environmental) and Porter's Five Forces.

Profitability frameworks are used to analyze revenue, costs, profits, and margins. It includes frameworks such as profit and loss statements, break-even analysis, and price elasticity.

It is important to note that while these frameworks are useful in analyzing different aspects of a business, they should not be used in isolation. A comprehensive approach that combines multiple frameworks and takes into account the unique context of the business is necessary for effective problem-solving and decision-making.

The Most Common Consulting Case Frameworks and How to Use Them

One of the most common consulting case frameworks is the 4 Cs. It is a business situation framework that helps analyze customers, competitors, collaborators, and company capabilities. Another popular framework is the McKinsey 7S framework, which focuses on seven critical elements: strategy, structure, systems, staff, style, skills, and shared values. The PESTLE framework is a market analysis framework that helps identify macroeconomic factors that impact the business.

Profitability frameworks such as the profit and loss statement or break-even analysis are also common frameworks used in practice. These frameworks help analyze revenues, costs, profits, margins, and break-even point.

Another commonly used framework is the SWOT analysis, which stands for strengths, weaknesses, opportunities, and threats. This framework helps identify internal and external factors that affect the business and can be used to develop strategies to address them. The value chain framework is another popular framework that helps identify the activities that add value to the business and those that do not.

It is important to note that while these frameworks are useful tools for analyzing business situations, they should not be used in isolation. It is important to consider the specific context of the business and tailor the framework to fit the situation. Additionally, it is important to use critical thinking skills and not rely solely on the framework to make decisions.

Building a Strong Foundation: Key Concepts to Understand Before Tackling Consulting Case Frameworks

Before digging into consulting case frameworks, there are key concepts that one needs to understand. These concepts include value creation, Porter's five forces, industry analysis, and market segmentation. Understanding these concepts is crucial to your ability to analyze business problems systematically and apply frameworks effectively.

Another important concept to understand is the SWOT analysis, which stands for strengths, weaknesses, opportunities, and threats. This analysis helps you identify the internal and external factors that affect a company's performance. It is a useful tool for developing strategies and making informed decisions.

Additionally, it is essential to have a good understanding of financial statements, such as the income statement, balance sheet, and cash flow statement. These statements provide valuable information about a company's financial health and performance. Being able to analyze financial statements is crucial for identifying areas of improvement and making recommendations to clients.

Tips for Analyzing Data in Consulting Case Frameworks

During the case interview, you will be provided with data, which you need to analyze effectively. The first step is to understand the context and data you are provided. You then need to organize the data into a structured Excel or PowerPoint model that allows you to present your analysis smoothly. Finally, synthesizing the data and focusing on the most critical information will contribute significantly to your success in the case interview.

One important tip for analyzing data in consulting case frameworks is to pay attention to the details. Often, the data provided in the case interview will contain subtle nuances that can significantly impact your analysis. Therefore, it is crucial to carefully review the data and identify any potential inconsistencies or outliers that may affect your conclusions.

Another useful strategy is to leverage your knowledge of industry trends and best practices. By staying up-to-date on the latest developments in your field, you can bring a unique perspective to your analysis and identify opportunities for innovation and growth. Additionally, by demonstrating your expertise in the industry, you can build credibility with your interviewer and showcase your potential as a consultant.

How to Identify and Prioritize Key Issues in a Consulting Case Framework

The process of identifying and prioritizing key issues involves mapping the different problems to the relevant frameworks, breaking down each problem to sub-issues, and using a prioritization matrix to identify which issues to focus on first. Effective problem-solving prioritizes analysis by highest impact, significance, and feasibility.

One important factor to consider when identifying and prioritizing key issues is the client's goals and objectives. Understanding what the client hopes to achieve through the consulting engagement can help consultants determine which issues are most critical to address. Additionally, it is important to consider any constraints or limitations that may impact the feasibility of addressing certain issues.

Another key aspect of identifying and prioritizing key issues is gathering and analyzing data. Consultants must gather relevant data to fully understand the scope and impact of each issue. This data can then be used to prioritize issues based on their potential impact on the client's business and the feasibility of addressing them within the given timeframe and budget.

Developing and Presenting Recommendations Based on Your Analysis

Based on your analysis, you will need to develop and present recommendations. Your recommendations should be anchored in your analysis and provide clear-cut guidance for the client. Providing a clear and structured presentation of your recommendations helps convey your thought process and provides context for your recommendation.

When developing your recommendations, it is important to consider the client's goals and objectives. Your recommendations should align with these goals and provide a clear path forward for the client to achieve them. Additionally, it is important to consider any potential challenges or obstacles that may arise during implementation and provide strategies for overcoming them.

When presenting your recommendations, it is important to tailor your communication style to the client's preferences. Some clients may prefer a more visual presentation, while others may prefer a more detailed written report. It is also important to be prepared to answer any questions or concerns the client may have and to provide additional support as needed to ensure successful implementation of your recommendations.

If you want to be successful in consulting case interviews and become a successful consultant, mastering consulting case frameworks is essential. Understanding the different types of consulting case frameworks, tips for analyzing data, and prioritizing key issues when producing recommendations are all necessary skills you need to develop to become the next premier consultant.

Additionally, it is important to develop strong communication skills to effectively convey your recommendations to clients and team members. This includes being able to clearly articulate your thought process, actively listening to feedback, and adapting your communication style to different audiences.

Furthermore, staying up-to-date with industry trends and news is crucial for success in consulting. This involves regularly reading industry publications, attending conferences and networking events, and seeking out opportunities to learn from experienced consultants in your field.

Equip yourself with specialized knowledge and acquire the skills that top firms demand with these extra articles:

• Mastering Case Interview Math: Essential Formulas
• How to Master BCG Pymetrics: A Comprehensive Guide
• What are the Key Skills Required for a Consultant in Management Consulting?
• How to Network for Management Consulting
• People Management Consulting: The Key to Organizational Success

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Hacking the Case Interview

Looking for a case interview cheat sheet or study guide to help you prepare for your upcoming consulting interviews?

Download our Case Interview Cheat Sheet and Study Guide , which covers all of the most important things you need to know. If you are looking to read the case interview cheat sheet in plain text, we’ve included all of the text below.

This case interview cheat sheet covers:  

What is a case interview?

What do case interviews assess?

What is the structure of a case interview?

What are the common types of cases?

What formulas do you need to know for case interviews?

What numbers do you need to know for case interviews?

What are some case interview tips?

If you’re looking for a step-by-step shortcut to learn case interviews quickly, enroll in our case interview course . These insider strategies from a former Bain interviewer helped 30,000+ land consulting offers while saving hundreds of hours of prep time.

A case interview is a 30- to 45-minute exercise that places you in a hypothetical business situation in which you and the interviewer work together to develop a recommendation or answer to a business problem.

• How can Walmart increase its profitability?
• How can Nike increase customer retention?
• How should Apple price its new smartphone?

A case interview assesses five criteria:

1.   Logical, structured thinking : Can you structure complex problems and ideas in a clear and organized way?

2.  Analytical problem solving: Can you analyze and interpret data to draw the right conclusions?

3.  Business acumen : Do you have a strong understanding of business fundamentals and good business judgment?

4.  Communication skills : Can you communicate clearly, concisely, and articulately?

5.  Personality and cultural fit : Are you a good fit for the work culture of the firm you are interviewing with?

All case interviews follow seven major steps:

1.  Understand the case background : Take notes while the interviewer reads you the case information. Pay particularly close attention to the context, company, and objective.

2.  Ask  clarifying questions : If necessary, ask 1 – 3 questions to clarify the objective of the case, understand the company better, or understand an unfamiliar term.

3.  Structure a framework : Structure a framework to break down the complex business problem into simpler, smaller components. A framework is a tool that organizes different ideas into major categories. Present your framework to the interviewer. Make sure that your framework is MECE .

M utually E xclusive: None of the parts of your framework overlap with each other

C ollectively E xhaustive: All of the parts of the framework account for everything you need to know to solve the case with no major areas missing.

4.  Start the case : How the case will start depends on whether the case is an interviewer-led case or a candidate-led case .

Interviewer-led case : The interviewer will be steering and controlling the direction of the case. They will explicitly point you to which questions to answer.

Candidate-led case : You will be driving the direction of the case. You will propose what area of your framework to start in, what questions you want to answer, what analyses you want to do, and what the next step of the case is.

5.  Solve quantitative problems : There are three major types of quantitative problems you could be asked in case interviews.

Market sizing or estimation questions : You will be asked to calculate the size of a particular market or estimate a particular figure. You may need to make your own assumptions on what number to use or the interviewer may provide you with the data.

Profitability or breakeven questions : You will be asked to calculate the expected profitability of a company or investment decision. You could also be asked to calculate the conditions necessary for a company to break even .

Charts and graphs questions : You will be asked to interpret data from various charts or graphs . These can include bar charts, pie charts, line graphs, scatterplots, bubble charts, and waterfall charts.

6.  Answer qualitative questions : There are two major types of qualitative questions you could be asked in case interviews.

Brainstorming questions : You will be asked to brainstorm a list of ideas for a particular problem or question.

Business judgment questions : You will be asked for your opinion on a business issue or a strategic decision.

7. Deliver a recommendation : Present your recommendation and provide the major reasons that support it. Then, propose potential next steps that you would take if you had more time.

Profitability case : A company is experiencing a decline in profits or profitability and is trying to identify what is causing the decline and what they should do about it.

How to solve:  

• Identify the driver behind the decline in profitability, whether it is from a decline in revenue, increase in costs, or both
• Understand what is causing this by looking at customer needs, competitor moves, and market trends
• Identify ways to improve profitability

Growth strategy case : A company is trying to decide how to best grow its business.

• Determine whether the company is looking to grow organically or inorganically
• For organic growth, consider growth through existing revenue sources and new revenue sources
• For inorganic growth, consider potential acquisitions and partnerships

Market entry case : A company is trying to decide whether they should enter a particular new market.

• Determine whether the market is attractive
• Assess the competitive landscape
• Determine if the company has the capabilities to enter
• Estimate the expected profitability from entering

Merger & acquisition case : A company is trying to decide whether or not they should acquire or merge with a particular company.

• Determine whether the company is attractive
• Assess potential synergies and risks
• Estimate the financial implications

New product case : A company is trying to decide whether or not they should develop and launch a particular new product.

How to solve:

• Determine whether the market that the product targets is attractive
• Assess whether the product meets customer needs and is superior to competitor products
• Determine whether the company has the capabilities to successfully develop and launch the product
• Estimate the expected profitability from launching the product

Pricing case : A company is trying to decide the best way to price a particular product or service.

• Determine the cost to produce the product. This is your minimum price.
• Estimate the customer’s maximum willingness to pay by quantifying the value the product provides. This is your maximum price.
• Investigate the price that competitors are setting for similar products. This will help you determine the optimal price between your minimum and maximum price.

Profit Formulas

• Profit = Revenue – Costs
• Revenue = Quantity * Price
• Costs = Total Variable Costs + Total Fixed Costs
• Total Variable Costs = Quantity * Variable Costs
• Profit = (Price – Variable Costs) * Quantity – Total Fixed Costs

Investment Formulas

• Return on Investment = Profit / Investment Cost
• Payback Period = Investment Cost / Profit per Year

Operations Formulas

• Output = Rate * Time
• Utilization = Output / Maximum Output

Market Share Formulas

• Market Share = Company Revenue in the Market / Total Market Revenue
• Relative Market Share = Company Market Share / Largest Competitor’s Market Share

General Statistics

• Global population: 8 billion
• Average household size: 2.5 people per household
• Average life expectancy: 80 years

Country Population Statistics  

• United States: 320 million
• Canada: 40 million
• Mexico: 125 million
• Brazil: 200 million
• United Kingdom: 60 million
• Germany: 80 million
• France: 60 million
• China: 1.4 billion
• India: 1.4 billion
• Russia: 150 million
• Japan: 125 million
• Australia: 25 million

Tip #1 - Make sure you understand the business problem and objective : Answering or addressing the wrong business problem is the quickest way to fail a case interview.

Tip #2 - Don’t rely on using memorized frameworks : Interviewers can tell when you are regurgitating memorized information and not thinking critically.

Tip #3 - Structure your approach before doing any math calculations : This helps you avoid making unnecessary calculations or reaching a dead-end.

Tip #4 - Talk through your calculations out loud : This decreases the likelihood of making a mistake and helps the interviewer follow what you are doing

Tip #5 - Structure your answer to qualitative questions : Use a simple two-part framework such as internal/external, short-term/long-term, or economic/non-economic.

Tip #6 - Answer “so what?” after every question : Throughout the case, connect each of your answers back to the case objective. What implications does your answer have on the overall business problem?

Tip #7 - Have a firm recommendation : Do not have a flimsy recommendation that switches back and forth between two different recommendations. Pick one and provide support.

Tip #8 - Be 80/20 : You will not have time to answer every single question. Focus on the most important questions that have the greatest impact on your answer. This is the 80/20 principle which states that 80% of the outcome comes from 20% of your effort.

Tip #9 - Be coachable and easy to work with : Interviewers look for people that they would personally want to have on their team. Demonstrate that you would be a great teammate.

Tip #10 - Be enthusiastic : Interviewers want to hire candidates that love their job and will work hard. Displaying enthusiasm shows you are passionate about consulting and working at the firm.

Check out our complete list of case interview tips .

Learn Case Interviews 10x Faster

Here are the resources we recommend to learn the most robust, effective case interview strategies in the least time-consuming way:

• Comprehensive Case Interview Course (our #1 recommendation): The only resource you need. Whether you have no business background, rusty math skills, or are short on time, this step-by-step course will transform you into a top 1% caser that lands multiple consulting offers.
• Hacking the Case Interview Book   (available on Amazon): Perfect for beginners that are short on time. Transform yourself from a stressed-out case interview newbie to a confident intermediate in under a week. Some readers finish this book in a day and can already tackle tough cases.
• The Ultimate Case Interview Workbook (available on Amazon): Perfect for intermediates struggling with frameworks, case math, or generating business insights. No need to find a case partner – these drills, practice problems, and full-length cases can all be done by yourself.
• Case Interview Coaching : Personalized, one-on-one coaching with former consulting interviewers
• Behavioral & Fit Interview Course : Be prepared for 98% of behavioral and fit questions in just a few hours. We'll teach you exactly how to draft answers that will impress your interviewer
• Resume Review & Editing : Transform your resume into one that will get you multiple interviews

Land Multiple Consulting Offers

Complete, step-by-step case interview course. 30,000+ happy customers.

• Case Interview: A comprehensive guide
• Pyramid Principle
• Hypothesis driven structure
• Fit Interview
• Consulting math
• The key to landing your consulting job
• What is a case interview?
• Types of case interview
• How to solve cases with the Problem-Driven Structure?
• What to remember in case interviews
• Case examples or building blocks?
• How do I prepare for case interviews
• Interview day tips
• How we can help

1. The key to landing your consulting job.

Case interviews - where you are asked to solve a business case study under scrutiny - are the core of the selection process right across McKinsey, Bain and BCG (the “MBB” firms). This interview format is also used pretty much universally across other high-end consultancies; including LEK, Kearney, Oliver Wyman and the consulting wings of the “Big Four”.

If you want to land a job at any of these firms, you will have to ace multiple case interviews.

It is increasingly likely that you will also have to solve online cases given by chatbots. You might need to pass these either before making it to interview or be asked to sit them alongside first round interviews.

Importantly, case studies aren’t something you can just wing . Firms explicitly expect you to have thoroughly prepared and many of your competitors on interview day will have been prepping for months.

Don’t worry though - MCC is here to help!

This article will take you through a full overview of everything you’ll need to know to do well, linking to more detailed articles and resources at each stage to let you really drill down into the details.

As well as traditional case interviews, we’ll also attend to the new formats in which cases are being delivered and otherwise make sure you’re up to speed with recent trends in this overall part of consulting recruitment.

Before we can figure out how to prepare for a case interview, though, we will first have to properly understand in detail what exactly you are up against. What format does a standard consulting case interview take? What is expected of you? How will you be assessed?

Let's dive right in and find out!

Professional help

Before going further, if this sounds like a lot to get your head around on your own, don't worry - help is available!

Our Case Academy course gives you everything you need to know to crack cases like a pro:

Case Academy Course

To put what you learn into practice (and secure some savings in the process) you can add mock interview coaching sessions with expereinced MBB consultants:

Coaching options

And, if you just want an experienced consultant to take charge of the whole selection process for you, you can check out our comprehensive mentoring programmes:

Explore mentoring

Now, back to the article!

2. What is a case interview?

Before we can hope to tackle a case interview, we have to understand what one is.

In short, a case interview simulates real consulting work by having you solve a business case study in conversation with your interviewer.

This case study will be a business problem where you have to advise a client - that is, an imaginary business or similar organisation in need of guidance.

You must help this client solve a problem and/or make a decision. This requires you to analyse the information you are given about that client organisation and figure out a final recommendation for what they should do next.

Business problems in general obviously vary in difficulty. Some are quite straightforward and can be addressed with fairly standard solutions. However, consulting firms exist precisely to solve the tough issues that businesses have failed to deal with internally - and so consultants will typically work on complex, idiosyncratic problems requiring novel solutions.

Some examples of case study questions might be:

• How much would you pay for a banking licence in Ghana?
• Estimate the potential value of the electric vehicle market in Germany
• How much gas storage capacity should a UK domestic energy supplier build?

Consulting firms need the brightest minds they can find to put to work on these important, difficult projects. You can expect the case studies you have to solve in interview, then, to echo the unique, complicated problems consultancies deal with every day. As we’ll explain here, this means that you need to be ready to think outside the box to figure out genuinely novel solutions.

2.1. Where are case interviews in the consulting selection process?

Not everyone who applies to a consulting firm will have a case interview - far from it!

In fact, case interviews are pretty expensive and inconvenient for firms to host, requiring them to take consultants off active projects and even fly them back to the office from location for in-person interviews (although this happens less frequently now). Ideally, firms want to cut costs and save time by narrowing down the candidate pool as much as possible before any live interviews.

As such, there are some hoops to jump through before you make it to interview rounds.

Firms will typically eliminate as much as 80% of the applicant pool before interviews start . For most firms, 50%+ of applicants might be cut based on resumes, before a similar cut is made on those remaining based on aptitude tests. McKinsey currently gives their Solve assessment to most applicants, but will use their resulting test scores alongside resumes to cut 70%+ of the candidate pool before interviews.

You'll need to be on top of your game to get as far as an interview with a top firm. Getting through the resume screen and any aptitude tests is an achievement in itself! Also we need to note that the general timeline of an application can differ depending on a series of factors, including which position you apply, your background, and the office you are applying to. For example, an undergraduate applying for a Business Analyst position (the entry level job at McKinsey) will most likely be part of a recruitment cycle and as such have pretty fixed dates when they need to sit the pre-screening test, and have the first and second round interviews (see more on those below). Conversely, an experienced hire will most likely have a much greater choice of test and interview dates as well as more time at their disposal to prepare.

For readers not yet embroiled in the selection process themselves, let’s put case interviews in context and take a quick look at each stage in turn. Importantly, note that you might also be asked to solve case studies outside interviews as well…

2.1.1. Application screen

It’s sometimes easy to forget that such a large cut is made at the application stage. At larger firms, this will mean your resume and cover letter is looked at by some combination of AI tools, recruitment staff and junior consulting staff (often someone from your own university).

Only the best applications will be passed to later stages, so make sure to check out our free resume and cover letter guides, and potentially get help with editing , to give yourself the best chance possible.

2.1.2. Aptitude tests and online cases

This part of the selection process has been changing quickly in recent years and is increasingly beginning to blur into the traditionally separate case interview rounds.

In the past, GMAT or PST style tests were the norm. Firms then used increasingly sophisticated and often gamified aptitude tests, like the Pymetrics test currently used by several firms, including BCG and Bain, and the original version of McKinsey’s Solve assessment (then branded as the Problem Solving Game).

Now, though, there is a move towards delivering relatively sophisticated case studies online. For example, McKinsey has replaced half the old Solve assessment with an online case. BCG’s Casey chatbot case now directly replaces a live first round case interview, and in the new era of AI chatbots, we expect these online cases to quickly become more realistic and increasingly start to relieve firms of some of the costs of live interviews.

Our consultants collectively reckon that, over time, 50% of case interviews are likely to be replaced with these kinds of cases . We give some specific advice for online cases in section six. However, the important thing to note is that these are still just simulations of traditional case interviews - you still need to learn how to solve cases in precisely the same way, and your prep will largely remain the same.

2.1.3. Rounds of Interviews

Now, let’s not go overboard with talk of AI. Even in the long term, the client facing nature of consulting means that firms will have live case interviews for as long as they are hiring anyone. And in the immediate term, case interviews are still absolutely the core of consulting selection.

Before landing an offer at McKinsey, Bain, BCG or any similar firm, you won’t just have one case interview, but will have to complete four to six case interviews, usually divided into two rounds, with each interview lasting approximately 50-60 minutes .

Being invited to first round usually means two or three case interviews. As noted above, you might also be asked to complete an online case or similar alongside your first round interviews.

If you ace first round, you will be invited to second round to face the same again, but more gruelling. Only then - after up to six case interviews in total, can you hope to receive an offer.

2.2. Differences between first and second round interviews

Despite interviews in the first and second round following the same format, second/final round interviews will be significantly more intense . The seniority of the interviewer, time pressure (with up to three interviews back-to-back), and the sheer value of the job at stake will likely make a second round consulting case interview one of the most challenging moments of your professional life.

There are three key differences between the two rounds:

• Time Pressure : Final round case interviews test your ability to perform under pressure, with as many as three interviews in a row and often only very small breaks between them.
• Focus : Since second round interviewers tend to be more senior (usually partners with 12+ years experience) and will be more interested in your personality and ability to handle challenges independently. Some partners will drill down into your experiences and achievements to the extreme. They want to understand how you react to challenges and your ability to identify and learn from past mistakes.
• Psychological Pressure: While case interviews in the first round are usually more focused on you simply cracking the case, second round interviewers often employ a "bad cop" strategy to test the way you react to challenges and uncertainty.

2.3. What skills do case interviews assess?

Reliably impressing your interviewers means knowing what they are looking for. This means understanding the skills you are being assessed against in some detail.

Overall, it’s important always to remember that, with case studies, there are no strict right or wrong answers. What really matters is how you think problems through, how confident you are with your conclusions and how quick you are with the back of the envelope arithmetic.

The objective of this kind of interview isn’t to get to one particular solution, but to assess your skillset. This is even true of modern online cases, where sophisticated AI algorithms score how you work as well as the solutions you generate.

If you visit McKinsey , Bain and BCG web pages on case interviews, you will find that the three firms look for very similar traits, and the same will be true of other top consultancies.

Broadly speaking, your interviewer will be evaluating you across five key areas:

2.1.1.One: Probing mind

Showing intellectual curiosity by asking relevant and insightful questions that demonstrate critical thinking and a proactive nature. For instance, if we are told that revenues for a leading supermarket chain have been declining over the last ten years, a successful candidate would ask:

“ We know revenues have declined. This could be due to price or volume. Do we know how they changed over the same period? ”

This is as opposed to a laundry list of questions like:

• Did customers change their preferences?
• Which segment has shown the decline in volume?
• Is there a price war in the industry?

2.1.2. Structure

Structure in this context means structuring a problem. This, in turn, means creating a framework - that is, a series of clear, sequential steps in order to get to a solution.

As with the case interview in general, the focus with case study structures isn’t on reaching a solution, but on how you get there.

This is the trickiest part of the case interview and the single most common reason candidates fail.

We discuss how to properly structure a case in more detail in section three. In terms of what your interviewer is looking for at high level, though, key pieces of your structure should be:

• Proper understanding of the objective of the case - Ask yourself: "What is the single crucial piece of advice that the client absolutely needs?"
• Identification of the drivers - Ask yourself: "What are the key forces that play a role in defining the outcome?"

Our Problem Driven Structure method, discussed in section three, bakes this approach in at a fundamental level. This is as opposed to the framework-based approach you will find in older case-solving

Focus on going through memorised sequences of steps too-often means failing to develop a full understanding of the case and the real key drivers.

At this link, we run through a case to illustrate the difference between a standard framework-based approach and our Problem Driven Structure method.

2.1.3. Problem Solving

You’ll be tested on your ability to identify problems and drivers, isolate causes and effects, demonstrate creativity and prioritise issues. In particular, the interviewer will look for the following skills:

• Prioritisation - Can you distinguish relevant and irrelevant facts?
• Connecting the dots - Can you connect new facts and evidence to the big picture?
• Establishing conclusions - Can you establish correct conclusions without rushing to inferences not supported by evidence?

2.1.4. Numerical Agility

In case interviews, you are expected to be quick and confident with both precise and approximated numbers. This translates to:

• Performing simple calculations quickly - Essential to solve cases quickly and impress clients with quick estimates and preliminary conclusions.
• Analysing data - Extract data from graphs and charts, elaborate and draw insightful conclusions.
• Solving business problems - Translate a real world case to a mathematical problem and solve it.

Our article on consulting math is a great resource here, though the extensive math content in our MCC Academy is the best and most comprehensive material available.

2.1.5. Communication

Real consulting work isn’t just about the raw analysis to come up with a recommendation - this then needs to be sold to the client as the right course of action.

Similarly, in a case interview, you must be able to turn your answer into a compelling recommendation. This is just as essential to impressing your interviewer as your structure and analysis.

Consultants already comment on how difficult it is to find candidates with the right communication skills. Add to this the current direction of travel, where AI will be able to automate more and more of the routine analytic side of consulting, and communication becomes a bigger and bigger part of what consultants are being paid for.

So, how do you make sure that your recommendations are relevant, smart, and engaging? The answer is to master what is known as CEO-level communication .

This art of speaking like a CEO can be quite challenging, as it often involves presenting information in effectively the opposite way to how you might normally.

To get it right, there are three key areas to focus on in your communications:

• Top down : A CEO wants to hear the key message first. They will only ask for more details if they think that will actually be useful. Always consider what is absolutely critical for the CEO to know, and start with that. You can read more in our article on the Pyramid Principle .
• Concise : This is not the time for "boiling the ocean" or listing an endless number possible solutions. CEOs, and thus consultants, want a structured, quick and concise recommendation for their business problem, that they can implement immediately.
• Fact-based : Consultants share CEOs' hatred of opinions based on gut feel rather than facts. They want recommendations based on facts to make sure they are actually in control. Always go on to back up your conclusions with the relevant facts.

Being concise and to the point is key in many areas, networking being one for them. For more detail on all this, check out our full article on delivering recommendations .

Prep the right way

3. types of case interview.

While most case interviews share a similar structure, firms will have some differences in the particular ways they like to do things in terms of both the case study and the fit component.

As we’ll see, these differences aren’t hugely impactful in terms of how you prepare. That said, it's always good to know as much as possible about what you will be going up against.

3.1. Different case objectives

A guiding thread throughout this article and our approach in general will be to treat each case as a self-contained problem and not try to pigeonhole it into a certain category. Having said that, there are of course similarities between cases and we can identify certain parameters and objectives.

Broadly speaking, cases can be divided into issue-based cases and strategic decision cases. In the former you will be asked to solve a certain issue, such as declining profits, or low productivity whereas in the latter you will be ask whether your client should or should not do something, such as enter a specific market or acquire another company. The chart below is a good breakdown of these different objectives:

3.2. How do interviewers craft cases

While interviewers will very likely be given a case bank to choose from by their company, a good number of them will also choose to adapt the cases they would currently be working on to an interview setting. The difference is that the latter cases will be harder to pigeonhole and apply standard frameworks to, so a tailored approach will be paramount.

If you’ve applied for a specific practice or type of consulting - such as operational consulting, for example - it’s very likely that you will receive a case geared towards that particular area alongside a ‘generalist’ consulting case (however, if that’s the case, you will generally be notified). The other main distinction when it comes to case interviews is between interviewer-led and candidate-led.

3.3. Candidate-led cases

Most consulting case interview questions test your ability to crack a broad problem, with a case prompt often going something like:

" How much would you pay to secure the rights to run a restaurant in the British Museum? "

You, as a candidate, are then expected to identify your path to solve the case (that is, provide a structure), leveraging your interviewer to collect the data and test your assumptions.

This is known as a “candidate-led” case interview and is used by Bain, BCG and other firms. From a structuring perspective, it’s easier to lose direction in a candidate-led case as there are no sign-posts along the way. As such, you need to come up with an approach that is both broad enough to cover all of the potential drivers in a case but also tailored enough to the problem you are asked to solve. It’s also up to you to figure out when you need to delve deeper into a certain branch of the case, brainstorm or ask for data. The following case from Bain is an excellent example on how to navigate a candidate-led case.

3.4. Interviewer-led cases

This type of case - employed most famously by McKinsey - is slightly different, with the interviewer controlling the pace and direction of the conversation much more than with other case interviews.

At McKinsey, your interviewer will ask you a set of pre-determined questions, regardless of your initial structure. For each question, you will have to understand the problem, come up with a mini structure, ask for additional data (if necessary) and come to the conclusion that answers the question. This more structured format of case also shows up in online cases by other firms - notably including BCG’s Casey chatbot (with the amusing result that practising McKinsey-style cases can be a great addition when prepping for BCG).

Essentially, these interviewer-led case studies are large cases made up of lots of mini-cases. You still use basically the same method as you would for standard (or candidate-led) cases - the main difference is simply that, instead of using that method to solve one big case, you are solving several mini-cases sequentially. These cases are easier to follow as the interviewer will guide you in the right direction. However, this doesn’t mean you should pay less attention to structure and deliver a generic framework! Also, usually (but not always!) the first question will ask you to map your approach and is the equivalent of the structuring question in candidate-led cases. Sometimes, if you’re missing key elements, the interviewer might prompt you in the right direction - so make sure to take those prompts seriously as they are there to help you get back on track (ask for 30 seconds to think on the prompt and structure your approach). Other times - and this is a less fortunate scenario - the interviewer might say nothing and simply move on to the next question. This is why you should put just as much thought (if not more) into the framework you build for interviewer-led cases , as you may be penalized if you produce something too generic or that doesn’t encompass all the issues of the case.

3.5. Case and fit

The standard case interview can be thought of as splitting into two standalone sub-interviews. Thus “case interviews” can be divided into the case study itself and a “fit interview” section, where culture fit questions are asked.

This can lead to a bit of confusion, as the actual case interview component might take up as little as half of your scheduled “case interview”. You need to make sure you are ready for both aspects.

To illustrate, here is the typical case interview timeline:

• First 15-30 minutes: Fit Interview - with questions assessing your motivation to be a consultant in that specific firm and your traits around leadership and teamwork. Learn more about the fit interview in our in-depth article here .
• Next 30-40 minutes: Case Interview - solving a case study
• Last 5 minutes: Fit Interview again - this time focussing on your questions for your interviewer.

Both the Case and Fit interviews play crucial roles in the finial hiring decision. There is no “average” taken between case and fit interviews: if your performance is not up to scratch in either of the two, you will not be able to move on to the next interview round or get an offer.

NB: No case without fit

Note that, even if you have only been told you are having a case interview or otherwise are just doing a case study, always be prepared to answer fit questions. At most firms, it is standard practice to include some fit questions in all case interviews, even if there are also separate explicit fit interviews, and interviewers will almost invariably include some of these questions around your case. This is perfectly natural - imagine how odd and artificial it would be to show up to an interview, simply do a case and leave again, without talking about anything else with the interviewer before or after.

3.5.1 Differences between firms

For the most part, a case interview is a case interview. However, firms will have some differences in the particular ways they like to do things in terms of both the case study and the fit component.

3.5.2. The McKinsey PEI

McKinsey brands its fit aspect of interviews as the Personal Experience Interview or PEI. Despite the different name, this is really much the same interview you will be going up against in Bain, BCG and any similar firms.

McKinsey does have a reputation for pushing candidates a little harder with fit or PEI questions , focusing on one story per interview and drilling down further into the specific details each time. We discuss this tendency more in our fit interview article . However, no top end firm is going to go easy on you and you should absolutely be ready for the same level of grilling at Bain, BCG and others. Thus any difference isn’t hugely salient in terms of prep.

3.6. What is different in 2023?

For the foreseeable future, you are going to have to go through multiple live case interviews to secure any decent consulting job. These might increasingly happen via Zoom rather than in person, but they should remain largely the same otherwise.

However, things are changing and the rise of AI in recent months seems pretty much guaranteed to accelerate existing trends.

Even before the explosive development of AI chatbots like ChatGPT we have seen in recent months, automation was already starting to change the recruitment process.

As we mentioned, case interviews are expensive and inconvenient for firms to run . Ideally, then, firms will try to reduce the number of interviews required for recruitment as far as possible. For many years, tests of various kinds served to cut down the applicant pool and thus the number of interviews. However, these tests had a limited capacity to assess candidates against the full consulting skillset in the way that case interviews do so well.

More recently, though, the development of online testing has allowed for more and more advanced assessments. Top consulting firms have been leveraging screening tests that better and better capture the same skillset as case interviews. Eventually this is converging on automated case studies. We see this very clearly with the addition of the Redrock case to McKinsey’s Solve assessment.

As these digital cases become closer to the real thing, the line between test and interview blurs. Online cases don’t just reduce the number of candidates to interview, but start directly replacing interviews.

Case in point here is BCG’s Casey chatbot . Previously, BCG had deployed less advanced online cases and similar tests to weed out some candidates before live case interviews began. Now, though, Casey actually replaces one first round case interview.

Casey, at time of writing, is still a relatively “basic” chatbot, basically running through a pre-set script. The Whatsapp-like interface does a lot of work to make it feel like one is chatting to a “real person” - the chatbot itself, though, cannot provide feedback or nudges to candidates as would a human interviewer.

We fully expect that, as soon as BCG and other firms can train a truer AI, these online cases will become more widespread and start replacing more live interviews.

We discuss the likely impacts of advanced AI on consulting recruitment and the industry more broadly in our blog.

Here, though, the real message is that you should expect to run into digital cases as well as traditional case interviews.

Luckily, despite any changes in specific format, you will still need to master the same fundamental skills and prepare in much the same way.

We’ll cover a few ways to help prepare for chatbot cases in section four. Ultimately, though, firms are looking for the same problem solving ability and mindset as a real interviewer. Especially as chatbots get better at mimicking a real interviewer, candidates who are well prepared for case cracking in general should have no problem with AI administered cases.

3.6.1. Automated fit interviews

Analogous to online cases, in recent years there has been a trend towards automated, “one way” fit interviews, with these typically being administered for consultancies by specialist contractors like HireVue or SparkHire.

These are kind of like Zoom interviews, but if the interviewer didn’t show up. Instead you will be given fit questions to answer and must record your answer in your computer webcam. Your response will then go on to be assessed by an algorithm, scoring both what you say and how you say it.

Again, with advances in AI, it is easy to imagine these automated interviews going from fully scripted interactions, where all candidates are asked the same list of questions, to a more interactive experience. Thus, we might soon arrive at a point where you are being grilled on the details of your stories - McKinsey PEI style - but by a bot rather than a human.

We include some tips on this kind of “one way” fit interview in section six here.

4. How to solve cases with the Problem-Driven Structure?

If you look around online for material on how to solve case studies, a lot of what you find will set out framework-based approaches. However, as we have mentioned, these frameworks tend to break down with more complex, unique cases - with these being exactly the kind of tough case studies you can expect to be given in your interviews.

To address this problem, the MyConsultingCoach team has synthesized a new approach to case cracking that replicates how top management consultants approach actual engagements.

MyConsultingCoach’s Problem Driven Structure approach is a universal problem solving method that can be applied to any business problem , irrespective of its nature.

As opposed to just selecting a generic framework for each case, the Problem Driven Structure approach works by generating a bespoke structure for each individual question and is a simplified version of the roadmap McKinsey consultants use when working on engagements.

The canonical seven steps from McKinsey on real projects are simplified to four for case interview questions, as the analysis required for a six-month engagement is somewhat less than that needed for a 45-minute case study. However, the underlying flow is the same (see the method in action in the video below)

Let's zoom in to see how our method actually works in more detail:

4.1. Identify the problem

Identifying the problem means properly understanding the prompt/question you are given, so you get to the actual point of the case.

This might sound simple, but cases are often very tricky, and many candidates irretrievably mess things up within the first few minutes of starting. Often, they won’t notice this has happened until they are getting to the end of their analysis. Then, they suddenly realise that they have misunderstood the case prompt - and have effectively been answering the wrong question all along!

With no time to go back and start again, there is nothing to do. Even if there were time, making such a silly mistake early on will make a terrible impression on their interviewer, who might well have written them off already. The interview is scuppered and all the candidate’s preparation has been for nothing.

This error is so galling as it is so readily avoidable.

Our method prevents this problem by placing huge emphasis on a full understanding of the case prompt. This lays the foundations for success as, once we have identified the fundamental, underlying problem our client is facing, we focus our whole analysis around finding solutions to this specific issue.

Now, some case interview prompts are easy to digest. For example, “Our client, a supermarket, has seen a decline in profits. How can we bring them up?”. However, many of the prompts given in interviews for top firms are much more difficult and might refer to unfamiliar business areas or industries. For example, “How much would you pay for a banking license in Ghana?” or “What would be your key areas of concern be when setting up an NGO?”

Don’t worry if you have no idea how you might go about tackling some of these prompts!

In our article on identifying the problem and in our full lesson on the subject in our MCC Academy course, we teach a systematic, four step approach to identifying the problem , as well as running through common errors to ensure you start off on the right foot every time!

This is summarised here:

Following this method lets you excel where your competitors mess up and get off to a great start in impressing your interviewer!

4.2. Build your problem driven structure

After you have properly understood the problem, the next step is to successfully crack a case is to draw up a bespoke structure that captures all the unique features of the case.

This is what will guide your analysis through the rest of the case study and is precisely the same method used by real consultants working on real engagements.

Of course, it might be easier here to simply roll out one an old-fashioned framework, and a lot of candidates will do so. This is likely to be faster at this stage and requires a lot less thought than our problem-driven structure approach.

However, whilst our problem driven structure approach requires more work from you, our method has the advantage of actually working in the kind of complex case studies where generic frameworks fail - that is exactly the kind of cases you can expect at an MBB interview .

Since we effectively start from first principles every time, we can tackle any case with the same overarching method. Simple or complex, every case is the same to you and you don’t have to gamble a job on whether a framework will actually work

4.2.1 Issue trees

Issue trees break down the overall problem into a set of smaller problems that you can then solve individually. Representing this on a diagram also makes it easy for both you and your interviewer to keep track of your analysis.

To see how this is done, let’s look at the issue tree below breaking down the revenues of an airline:

These revenues can be segmented as the number of customers multiplied by the average ticket price. The number of customers can be further broken down into a number of flights multiplied by the number of seats, times average occupancy rate. The node corresponding to the average ticket price can then be segmented further.

4.2.2 Hypothesis trees

Hypothesis trees are similar, the only difference being that rather than just trying to break up the issue into smaller issues you are assuming that the problem can be solved and you are formulating solutions.

In the example above, you would assume revenues can be increased by either increasing the average ticket price or the number of customers . You can then hypothesize that you can increase the average occupancy rate in three ways: align the schedule of short and long haul flights, run a promotion to boost occupancy in off-peak times, or offer early bird discounts.

4.2.3 Other structures:structured lists

Structured lists are simply subcategories of a problem into which you can fit similar elements. This McKinsey case answer starts off by identifying several buckets such as retailer response, competitor response, current capabilities and brand image and then proceeds to consider what could fit into these categories.

Buckets can be a good way to start the structure of a complex case but when using them it can be very difficult to be MECE and consistent, so you should always aim to then re-organize them into either an issue or a hypothesis tree.

It is worth noting that the same problem can be structured in multiple valid ways by choosing different means to segment the key issues. Ultimately all these lists are methods to set out a logical hierachy among elements.

4.2.4 Structures in practice

That said, not all valid structures are equally useful in solving the underlying problem. A good structure fulfils several requirements - including MECE-ness , level consistency, materiality, simplicity, and actionability. It’s important to put in the time to master segmentation, so you can choose a scheme isn’t only valid, but actually useful in addressing the problem.

After taking the effort to identify the problem properly, an advantage of our method is that it will help ensure you stay focused on that same fundamental problem throughout. This might not sound like much, but many candidates end up getting lost in their own analysis, veering off on huge tangents and returning with an answer to a question they weren’t asked.

Another frequent issue - particularly with certain frameworks - is that candidates finish their analysis and, even if they have successfully stuck to the initial question, they have not actually reached a definite solution. Instead, they might simply have generated a laundry list of pros and cons, with no clear single recommendation for action.

Clients employ consultants for actionable answers, and this is what is expected in the case interview. The problem driven structure excels in ensuring that everything you do is clearly related back to the key question in a way that will generate a definitive answer. Thus, the problem driven structure builds in the hypothesis driven approach so characteristic of real consulting practice.

You can learn how to set out your own problem driven structures in our article here and in our full lesson in the MCC Academy course.

4.2. Lead the analysis

A problem driven structure might ensure we reach a proper solution eventually, but how do we actually get there?

We call this step " leading the analysis ", and it is the process whereby you systematically navigate through your structure, identifying the key factors driving the issue you are addressing.

Generally, this will mean continuing to grow your tree diagram, further segmenting what you identify as the most salient end nodes and thus drilling down into the most crucial factors causing the client’s central problem.

Once you have gotten right down into the detail of what is actually causing the company’s issues, solutions can then be generated quite straightforwardly.

To see this process in action, we can return to our airline revenue example:

Let’s say we discover the average ticket price to be a key issue in the airline’s problems. Looking closer at the drivers of average ticket price, we find that the problem lies with economy class ticket prices. We can then further segment that price into the base fare and additional items such as food.

Having broken down the issue to such a fine-grained level and considering the 80/20 rule(see below), solutions occur quite naturally. In this case, we can suggest incentivising the crew to increase onboard sales, improving assortment in the plane, or offering discounts for online purchases.

Our article on leading the analysis is a great primer on the subject, with our video lesson in the MCC Academy providing the most comprehensive guide available.

4.4. Provide recommendations

So you have a solution - but you aren’t finished yet!

Now, you need to deliver your solution as a final recommendation.

This should be done as if you are briefing a busy CEO and thus should be a one minute, top-down, concise, structured, clear, and fact-based account of your findings.

The brevity of the final recommendation belies its importance. In real life consulting, the recommendation is what the client has potentially paid millions for - from their point of view, it is the only thing that matters.

In an interview, your performance in this final summing up of your case is going to significantly colour your interviewer’s parting impression of you - and thus your chances of getting hired!

So, how do we do it right?

Barbara Minto's Pyramid Principle elegantly sums up almost everything required for a perfect recommendation. The answer comes first , as this is what is most important. This is then supported by a few key arguments , which are in turn buttressed by supporting facts .

Across the whole recommendation, the goal isn’t to just summarise what you have done. Instead, you are aiming to synthesize your findings to extract the key "so what?" insight that is useful to the client going forward.

All this might seem like common sense, but it is actually the opposite of how we relay results in academia and other fields. There, we typically move from data, through arguments and eventually to conclusions. As such, making good recommendations is a skill that takes practice to master.

We can see the Pyramid Principle illustrated in the diagram below:

To supplement the basic Pyramid Principle scheme, we suggest candidates add a few brief remarks on potential risks and suggested next steps . This helps demonstrate the ability for critical self-reflection and lets your interviewer see you going the extra mile.

The combination of logical rigour and communication skills that is so definitive of consulting is particularly on display in the final recommendation.

Despite it only lasting 60 seconds, you will need to leverage a full set of key consulting skills to deliver a really excellent recommendation and leave your interviewer with a good final impression of your case solving abilities.

Our specific article on final recommendations and the specific video lesson on the same topic within our MCC Academy are great, comprehensive resources. Beyond those, our lesson on consulting thinking and our articles on MECE and the Pyramid Principle are also very useful.

4.5. What if I get stuck?

Naturally with case interviews being difficult problems there may be times where you’re unsure what to do or which direction to take. The most common scenario is that you will get stuck midway through the case and there are essentially two things that you should do:

• 1. Go back to your structure
• 2. Ask the interviewer for clarification

Your structure should always be your best friend - after all, this is why you put so much thought and effort into it: if it’s MECE it will point you in the right direction. This may seem abstract but let’s take the very simple example of a profitability issue: if you’ve started your analysis by segmenting profit into revenue minus costs and you’ve seen that the cost side of the analysis is leading you nowhere, you can be certain that the declining profit is due to a decline in revenue.

Similarly, when you’re stuck on the quantitative section, make sure that your framework for calculations is set up correctly (you can confirm this with the interviewer) and see what it is you’re trying to solve for: for example if you’re trying to find what price the client should sell their new t-shirt in order to break even on their investment, you should realize that what you’re trying to find is the break even point, so you can start by calculating either the costs or the revenues. You have all the data for the costs side and you know they’re trying to sell 10.000 pairs so you can simply set up the equation with x being the price.

As we’ve emphasised on several occasions, your consulting interview will be a dialogue. As such, if you don’t know what to do next or don’t understand something, make sure to ask the interviewer (and as a general rule always follow their prompts as they are trying to help, not trick you). This is especially true for the quantitative questions, where you should really understand what data you’re looking at before you jump into any calculations. Ideally you should ask your questions before you take time to formulate your approach but don’t be afraid to ask for further clarification if you really can’t make sense of what’s going on. It’s always good to walk your interviewer through your approach before you start doing the calculations and it’s no mistake to make sure that you both have the same understanding of the data. For example when confronted with the chart below, you might ask what GW (in this case gigawatt) means from the get-go and ask to confirm the different metrics (i.e. whether 1 GW = 1000 megawatts). You will never be penalised for asking a question like that.

5. What to remember in case interviews

If you’re new to case cracking you might feel a bit hopeless when you see a difficult case question, not having any idea where to start.

In fact though, cracking cases is much like playing chess. The rules you need to know to get started are actually pretty simple. What will make you really proficient is time and practice.

In this section, we’ll run through a high level overview of everything you need to know, linking to more detailed resources at every step.

5.1. An overall clear structure

You will probably hear this more than you care for but it is the most important thing to keep in mind as you start solving cases, as not only it is a key evaluation criterion but the greatest tool you will have at your disposal. The ability to build a clear structure in all aspects of the case will be the difference between breezing through a complicated case and struggling at its every step. Let’s look a bit closer at the key areas where you should be structured!

5.1.1 Structured notes

Every case interview starts with a prompt, usually verbal, and as such you will have to take some notes. And here is where your foray into structure begins, as the notes you take should be clear, concise and structured in a way that will allow you to repeat the case back to the interviewer without writing down any unnecessary information.

This may sound very basic but you should absolutely not be dismissive about it: taking clear and organized notes will allow you to navigate a case just like you would a powerpoint! While you should obviously adopt a system that you are comfortable with, what we found helps is to have separate sections for:

• The case brief
• Follow-up questions and answers
• Numerical data
• Case structure (the most crucial part when solving the case)
• Any scrap work during the case (usually calculations)

When solving the case - or, as we call it here, in the Lead the analysis step, it is highly recommended to keep on feeding and integrating your structure, so that you never get lost. Maintaining a clear high level view is one of the most critical skills in consulting: by constantly keeping track of where you are following your structure, you’ll never lose your focus on the end goal.

In the case of an interviewer-led case, you can also have separate sheets for each question (e.g. Question 1. What factors can we look at that drive profitability?). If you develop a system like this you’ll know exactly where to look for each point of data rather than rummage around in untidy notes. There are a couple more sections that you may have, depending on preference - we’ll get to these in the next sections.

5.1.2 Structured communication

There will be three main types of communication in cases:

• 1. Asking and answering questions
• 2. Walking the interviewer through your structure (either the case or calculation framework - we’ll get to that in a bit!)
• 3. Delivering your recommendation

Asking and answering questions will be the most common of these and the key thing to do before you speak is ask for some time to collect your thoughts and get organised. What you want to avoid is a ‘laundry list’ of questions or anything that sounds too much like a stream of consciousness.

Different systems work for different candidates but a sure-fire way of being organised is numbering your questions and answers. So rather than saying something like ‘I would like to ask about the business model, operational capacity and customer personas’ it’s much better to break it down and say something along the lines of ‘I’ve got three key questions. Firstly I would like to inquire into the business model of our client. Secondly I would like to ask about their operational capacity. Thirdly I would like to know more about the different customer personas they are serving’.

A similar principle should be applied when walking the interview through your structure, and this is especially true of online interviews (more and more frequent now) when the interviewer can’t see your notes. Even if you have your branches or buckets clearly defined, you should still use a numbering system to make it obvious to the interviewer. So, for example, when asked to identify whether a company should make an acquisition, you might say ‘I would like to examine the following key areas. Firstly the financial aspects of this issue, secondly the synergies and thirdly the client’s expertise’

The recommendation should be delivered top-down (see section 4.4 for specifics) and should employ the same numbering principle. To do so in a speedy manner, you should circle or mark the key facts that you encounter throughout the case so you can easily pull them out at the end.

5.1.3 Structured framework

It’s very important that you have a systematic approach - or framework - for every case. Let’s get one thing straight: there is a difference between having a problem-solving framework for your case and trying to force a case into a predetermined framework. Doing the former is an absolute must , whilst doing the latter will most likely have you unceremoniously dismissed.

We have seen there are several ways of building a framework, from identifying several categories of issues (or ‘buckets’) to building an issue or hypothesis tree (which is the most efficient type of framework). For the purpose of organization, we recommend having a separate sheet for the framework of the case, or, if it’s too much to manage, you can have it on the same sheet as the initial case prompt. That way you’ll have all the details as well as your proposed solution in one place.

5.1.4 Structured calculations

Whether it’s interviewer or candidate-led, at some point in the case you will get a bunch of numerical data and you will have to perform some calculations (for the specifics of the math you’ll need on consulting interviews, have a look at our Consulting Math Guide ). Here’s where we urge you to take your time and not dive straight into calculating! And here’s why: while your numerical agility is sure to impress interviewers, what they’re actually looking for is your logic and the calculations you need to perform in order to solve the problem . So it’s ok if you make a small mistake, as long as you’re solving for the right thing.

As such, make it easy for them - and yourself. Before you start, write down in steps the calculations you need to perform. Here’s an example: let’s say you need to find out by how much profits will change if variable costs are reduced by 10%. Your approach should look something like:

• 1. Calculate current profits: Profits = Revenues - (Variable costs + Fixed costs)
• 2. Calculate the reduction in variable costs: Variable costs x 0.9
• 3. Calculate new profits: New profits = Revenues - (New variable costs + Fixed costs)

Of course, there may be more efficient ways to do that calculation, but what’s important - much like in the framework section - is to show your interviewer that you have a plan, in the form of a structured approach. You can write your plan on the sheet containing the data, then perform the calculations on a scrap sheet and fill in the results afterward.

5.2. Common business knowledge and formulas

Although some consulting firms claim they don’t evaluate candidates based on their business knowledge, familiarity with basic business concepts and formulae is very useful in terms of understanding the case studies you are given in the first instance and drawing inspiration for structuring and brainstorming.

If you are coming from a business undergrad, an MBA or are an experienced hire, you might well have this covered already. For those coming from a different background, it may be useful to cover some.

Luckily, you don’t need a degree-level understanding of business to crack interview cases , and a lot of the information you will pick up by osmosis as you read through articles like this and go through cases.

However, some things you will just need to sit down and learn. We cover everything you need to know in some detail in our Case Academy Course course. However, some examples here of things you need to learn are:

• Basic accounting (particularly how to understand all the elements of a balance sheet)
• Basic economics
• Basic marketing
• Basic strategy

Below we include a few elementary concepts and formulae so you can hit the ground running in solving cases. We should note that you should not memorise these and indeed a good portion of them can be worked out logically, but you should have at least some idea of what to expect as this will make you faster and will free up much of your mental computing power. In what follows we’ll tackle concepts that you will encounter in the private business sector as well as some situations that come up in cases that feature clients from the NGO or governmental sector.

5.2.1 Business sector concepts

These concepts are the bread and butter of almost any business case so you need to make sure you have them down. Naturally, there will be specificities and differences between cases but for the most part here is a breakdown of each of them.

5.2.1.1. Revenue

The revenue is the money that the company brings in and is usually equal to the number of products they sell multiplied to the price per item and can be expressed with the following equation:

Revenue = Volume x Price

Companies may have various sources of revenue or indeed multiple types of products, all priced differently which is something you will need to account for. Let’s consider some situations. A clothing company such as Nike will derive most of their revenue from the number of products they sell times the average price per item. Conversely, for a retail bank revenue is measured as the volume of loans multiplied by the interest rate at which the loans are given out. As we’ll see below, we might consider primary revenues and ancillary revenues: in the case of a football club, we might calculate primary revenues by multiplying the number of tickets sold by the average ticket price, and ancillary revenues those coming from sales of merchandise (similarly, let’s say average t-shirt price times the number of t-shirts sold), tv rights and sponsorships.

These are but a few examples and another reminder that you should always aim to ask questions and understand the precise revenue structure of the companies you encounter in cases.

5.2.1.2. Costs

The costs are the expenses that a company incurs during its operations. Generally, they can be broken down into fixed and variable costs :

Costs = Fixed Costs + Variable Costs

As their name implies, fixed costs do not change based on the number of units produced or sold. For example, if you produce shoes and are renting the space for your factory, you will have to pay the rent regardless of whether you produce one pair or 100. On the other hand, variable costs depend on the level of activity, so in our shoe factory example they would be equivalent to the materials used to produce each pair of shoes and would increase the more we produce.

These concepts are of course guidelines used in order to simplify the analysis in cases, and you should be aware that in reality often the situation can be more complicated. Costs can also be quasi-fixed, in that they increase marginally with volume. Take the example of a restaurant which has a regular staff, incurring a fixed cost but during very busy hours or periods they also employ some part-time workers. This cost is not exactly variable (as it doesn’t increase with the quantity of food produced) but also not entirely fixed, as the number of extra hands will depend on how busy the restaurant is. Fixed costs can also be non-linear in nature. Let’s consider the rent in the same restaurant: we would normally pay a fixed amount every month, but if the restaurant becomes very popular we might need to rent out some extra space so the cost will increase.

5.2.1.3. Profit and profit margin

The profit is the amount of money a company is left with after it has paid all of its expenses and can be expressed as follows:

Profit = Revenue - Costs

It’s very likely that you will encounter a profitability issue in one of your cases, namely you will be asked to increase a company’s profit. There are two main ways of doing this: increasing revenues and reducing costs , so these will be the two main areas you will have to investigate. This may seem simple but what you will really need to understand in a case are the key drivers of a business (and this should be done through clarifying questions to the interviewer - just as a real consultant would question their client).

For example, if your client is an airline you can assume that the main source of revenue is sales of tickets, but you should inquire how many types of ticket the specific airline sells. You may naturally consider economy and business class tickets, but you may find out that there is a more premium option - such as first class - and several in-between options. Similarly to our football club example, there may be ancillary revenues from selling of food and beverage as well as advertising certain products or services on flights.

You may also come across the profit margin in cases. This is simply the percentage of profit compared to the revenue and can be expressed as follows:

Profit margin = Profit/Revenue x 100

5.2.1.4. Break-even point

An ancillary concept to profit, the break-even point is the moment where revenues equal costs making the profit zero and can be expressed as the following equation:

Revenues = Costs (Fixed costs + Variable costs)

This formula will be useful when you are asked questions such as ‘What is the minimum price I should sell product X?’ or ‘What quantity do I need to sell in order to recoup my investment?’. Let’s say an owner of a sandwich store asks us to figure out how many salami and cheese salami sandwiches she needs to sell in order to break even. She’s spending $4 on salami and $2 for cheese and lettuce per sandwich, and believes she can sell the sandwiches at around $7. The cost of utilities and personnel is around $5000 per month. We could lay this all out in the break-even equation:

7 x Q ( quantity ) = (4+2) x Q + 5000 ( variable + fixed costs )

In a different scenario, we may be asked to calculate the break-even price . Let’s consider our sandwich example and say our owner knows she has enough ingredients for about 5000 sandwiches per month but is not sure how much to sell them for. In that case, if we know our break-even equation, we can simply make the following changes:

P ( price ) x 5000 = (4+2) x 5000 + 5000

By solving the equation we get to the price of $7 per sandwich.

5.2.1.5. Market share and market size

We can also consider the market closely with profit, as in fact the company’s performance in the market is what drives profits. The market size is the total number of potential customers for a certain business or product, whereas the market share is the percentage of that market that your business controls (or could control, depending on the case).

There is a good chance you will have to estimate the market size in one of your case interviews and we get into more details on how to do that below. You may be asked to estimate this in either number of potential customers or total value . The latter simply refers to the number of customers multiplied by the average value of the product or service.

To calculate the market share you will have to divide the company’s share by the total market size and multiply by 100:

Note, though, that learning the very basics of business is the beginning rather than the end of your journey. Once you are able to “speak business” at a rudimentary level, you should try to “become fluent” and immerse yourself in reading/viewing/listening to as wide a variety of business material as possible, getting a feel for all kinds of companies and industries - and especially the kinds of problems that can come up in each context and how they are solved. The material put out by the consulting firms themselves is a great place to start, but you should also follow the business news and find out about different companies and sectors as much as possible between now and interviews. Remember, if you’re going to be a consultant, this should be fun rather than a chore!

5.3 Public sector and NGO concepts

As we mentioned, there will be some cases (see section 6.6 for a more detailed example) where the key performance indicators (or KPIs in short) will not be connected to profit. The most common ones will involve the government of a country or an NGO, but they can be way more diverse and require more thought and application of first principles. We have laid out a couple of the key concepts or KPIs that come up below

5.3.1 Quantifiability

In many such scenarios you will be asked to make an important strategic decision of some kind or to optimise a process. Of course these are not restricted to non-private sector cases but this is where they really come into their own as there can be great variation in the type of decision and the types of field.

While there may be no familiar business concepts to anchor yourself onto, a concept that is essential is quantifiability . This means, however qualitative the decision might seem, consultants rely on data so you should always aim to have aspects of a decision that can be quantified, even if the data doesn’t present itself in a straightforward manner.

Let’s take a practical example. Your younger sibling asks you to help them decide which university they should choose if they want to study engineering. One way to structure your approach would be to segment the problem into factors affecting your sibling’s experience at university and experience post-university. Within the ‘at uni’ category you might think about the following:

• Financials : How much are tuition costs and accommodation costs?
• Quality of teaching and research : How are possible universities ranked in the QS guide based on teaching and research?
• Quality of resources : How well stocked is their library, are the labs well equipped etc.?
• Subject ranking : How is engineering at different unis ranked?
• Life on campus and the city : What are the living costs in the city where the university is based? What are the extracurricular opportunities and would your sibling like to live in that specific city based on them?

Within the ‘out of uni’ category you might think about:

• Exit options : What are the fields in which your sibling could be employed and how long does it take the average student of that university to find a job?
• Alumni network : What percentage of alumni are employed by major companies?
• Signal : What percentage of applicants from the university get an interview in major engineering companies and related technical fields?

You will perhaps notice that all the buckets discussed pose quantifiable questions meant to provide us with data necessary to make a decision. It’s no point to ask ‘Which university has the nicest teaching staff?’ as that can be a very subjective metric.

5.3.1 Impact

Another key concept to consider when dealing with sectors other than the private one is how impactful a decision or a line of inquiry is on the overarching issue , or whether all our branches in our issue tree have a similar impact. This can often come in the form of impact on lives, such as in McKinsey’s conservation case discussed below, namely how many species can we save with our choice of habitat.

5.4 Common consulting concepts

Consultants use basic business concepts on an every day basis, as they help them articulate their frameworks to problems. However, they also use some consulting specific tools to quality check their analysis and perform in the most efficient way possible. These principles can be applied to all aspects of a consultant’s work, but for brevity we can say they mostly impact a consultant’s systematic approach and communication - two very important things that are also tested in case interviews. Therefore, it’s imperative that you not only get to know them, but learn how and when to use them as they are at the very core of good casing. They are MECE-ness, the Pareto Principle and the Pyramid principle and are explained briefly below - you should, however, go on to study them in-depth in their respective articles.

Perhaps the central pillar of all consulting work and an invaluable tool to solve cases, MECE stands for Mutually Exclusive and Collectively Exhaustive . It can refer to any and every aspect in a case but is most often used when talking about structure. We have a detailed article explaining the concept here , but the short version is that MECE-ness ensures that there is no overlap between elements of a structure (i.e. the Mutually Exclusive component) and that it covers all the drivers or areas of a problem (Collectively Exhaustive). It is a concept that can be applied to any segmentation when dividing a set into subsets that include it wholly but do not overlap.

Let’s take a simple example and then a case framework example. In simple terms, when we are asked to break down the set ‘cars’ into subsets, dividing cars into ‘red cars’ and ‘sports cars’ is neither mutually exclusive (as there are indeed red sports cars) nor exhaustive of the whole set (i.e. there are also yellow non-sports cars that are not covered by this segmentation). A MECE way to segment would be ‘cars produced before 2000’ and ‘cars produced after 2000’ as this segmentation allows for no overlap and covers all the cars in existence.

Dividing cars can be simple, but how can we ensure MECEness in a case-interview a.k.a. a business situation. While the same principles apply, a good tip to ensure that your structure is MECE is to think about all the stakeholders - i.e. those whom a specific venture involves.

Let’s consider that our client is a soda manufacturer who wants to move from a business-to-business strategy, i.e. selling to large chains of stores and supermarkets, to a business-to-consumer strategy where it sells directly to consumers. In doing so they would like to retrain part of their account managers as direct salespeople and need to know what factors to consider.

A stakeholder-driven approach would be to consider the workforce and customers and move further down the issue tree, thinking about individual issues that might affect them. In the case of the workforce, we might consider how the shift would affect their workload and whether it takes their skillset into account. As for the customers, we might wonder whether existing customers would be satisfied with this move: will the remaining B2B account managers be able to provide for the needs of all their clients and will the fact that the company is selling directly to consumers now not cannibalise their businesses? We see how by taking a stakeholder-centred approach we can ensure that every single perspective and potential issue arising from it is fully covered.

5.4.2 The Pareto Principle

Also known as the 80/20 rule, this principle is important when gauging the impact of a decision or a factor in your analysis. It simply states that in business (but not only) 80% of outcomes come from 20% of causes. What this means is you can make a few significant changes that will impact most of your business organisation, sales model, cost structure etc.

Let’s have a look at 3 quick examples to illustrate this:

• 80% of all accidents are caused by 20% of drivers
• 20% of a company’s products account for 80% of the sales
• 80% of all results in a company are driven by 20% of its employees

The 80/20 rule will be a very good guide line in real engagements as well as case interviews, as it will essentially point to the easiest and most straightforward way of doing things. Let’s say one of the questions in a case is asking you to come up with an approach to understand the appeal of a new beard trimmer. Obviously you can’t interview the whole male population so you might think about setting up a webpage and asking people to comment their thoughts. But what you would get would be a laundry list of difficult to sift through data.

Using an 80/20 approach you would segment the population based on critical factors (age groups, grooming habits etc.) and then approach a significant sample size of each (e.g. 20), analysing the data and reaching a conclusion.

5.4.3 The Pyramid Principle

This principle refers to organising your communication in a top-down , efficient manner. While this is generally applicable, the pyramid principle will most often be employed when delivering the final recommendation to your client. This means - as is implicit in the name - that you would organise your recommendation (and communication in general) as a pyramid, stating the conclusion or most important element at the top then go down the pyramid listing 3 supporting arguments and then further (ideally also 3) supporting arguments for those supporting arguments.

Let’s look at this in practice: your client is a German air-conditioning unit manufacturer who was looking to expand into the French market. However, after your analysis you’ve determined that the market share they were looking to capture would not be feasible. A final recommendation using the Pyramid Principle would sound something like this: ‘I recommend that we do not enter the German market for the following three reasons. Firstly, the market is too small for our ambitions of $50 million. Secondly the market is heavily concentrated, being controlled by three major players and our 5 year goal would amount to controlling 25% of the market, a share larger than that of any of the players. Thirdly, the alternative of going into the corporate market would not be feasible, as it has high barriers to entry.Then, if needed, we could delve deeper into each of our categories

6. Case examples or building blocks?

As we mentioned before, in your preparation you will undoubtedly find preparation resources that claim that there are several standard types of cases and that there is a general framework that can be applied to each type of case. While there are indeed cases that are straightforward at least in appearance and seemingly invite the application of such frameworks, the reality is never that simple and cases often involve multiple or more complicated components that cannot be fitted into a simple framework.

At MCC we don’t want you to get into the habit of trying to identify which case type you’re dealing with and pull out a framework, but we do recognize that there are recurring elements in frameworks that are useful - such as the profitability of a venture (with its revenues and costs), the valuation of a business, estimating and segmenting a market and pricing a product.

We call these building blocks because they can be used to build case frameworks but are not a framework in and of themselves, and they can be shuffled around and rearranged in any way necessary to be tailored to our case. Hence, our approach is not to make you think in terms of case types but work from first principles and use these building blocks to build your own framework. Let’s take two case prompts to illustrate our point.

The first is from the Bain website, where the candidate is asked whether they think it’s a good idea for their friend to open a coffee shop in Cambridge UK (see the case here ). The answer framework provided here is a very straightforward profitability analysis framework, examining the potential revenues and potential costs of the venture:

While this is a good point to start (especially taken together with the clarifying questions), we will notice that this approach will need more tailoring to the case - for example the quantity of coffee will be determined by the market for coffee drinkers in Cambridge, which we have to determine based on preference. We are in England so a lot of people will be drinking tea but we are in a university town so perhaps more people than average are drinking coffee as it provides a better boost when studying. All these are some much needed case-tailored hypotheses that we can make based on the initial approach.

Just by looking at this case we might be tempted to say that we can just take a profitability case and apply it without any issues. However, this generic framework is just a starting point and in reality we would need to tailor it much further in the way we had started to do in order to get to a satisfactory answer. For example, the framework itself doesn’t cover aspects such as the customer’s expertise: does the friend have any knowledge of the coffee business, such as where to source coffee and how to prepare it? Also, we could argue there may be some legal factors to consider here, such as any approvals that they might need from the city council to run a coffee shop on site, or some specific trade licences that are not really covered in the basic profitability framework.

Let’s take a different case , however, from the McKinsey website. In this scenario, the candidate is being asked to identify some factors in order to choose where to focus the client’s conservation efforts. Immediately we can realise that this case doesn’t lend itself to any pre-packaged framework and we will need to come up with something from scratch - and take a look at McKinsey’s answer of the areas to focus on:

We notice immediately that this framework is 100% tailored to the case - of course there are elements which we encounter in other cases, such as costs and risks but again these are applied in an organic way. It’s pretty clear that while no standard framework would work in this case, the aforementioned concepts - costs and risks - and the way to approach them (a.k.a building blocks ) are fundamentally similar throughout cases (with the obvious specificities of each case).

In what follows, we’ll give a brief description of each building block starting from the Bain example discussed previously, in order to give you a general idea of what they are and their adaptability, but you should make sure to follow the link to the in-depth articles to learn all their ins and outs.

6.1 Estimates and segmentation

This building block will come into play mostly when you’re thinking about the market for a certain product (but make sure to read the full article for more details). Let’s take our Bain Cambridge coffee example. As we mentioned under the quantity bucket we need to understand what the market size for coffee in Cambridge would be - so we can make an estimation based on segmentation .

The key to a good estimation is the ability to logically break down the problem into more manageable pieces. This will generally mean segmenting a wider population to find a particular target group. We can start off with the population of Cambridge - which we estimate at 100.000. In reality the population is closer to 150.000 but that doesn’t matter - the estimation has to be reasonable and not accurate , so unless the interviewer gives you a reason to reconsider you can follow your instinct. We can divide that into people who do and don’t drink coffee. Given our arguments before, we can conclude that 80% of those, so 80.000 drink coffee. Then we can further segment into those who drink regularly - let’s say every day - and those who drink occasionally - let’s say once a week. Based on the assumptions before about the student population needing coffee to function, and with Cambridge having a high student population, we can assume that 80% of those drinking coffee are regular drinkers, so that would be 64.000 regular drinkers and 16.000 occasional drinkers. We can then decide whom we want to target what our strategy needs to be:

This type of estimation and segmentation can be applied to any case specifics - hence why it is a building block.

6.2 Profitability

We had several looks at this building block so far (see an in-depth look here ) as it will show up in most scenarios, since profit is a key element in any company’s strategy. As we have seen, the starting point to this analysis is to consider both the costs and revenues of a company, and try to determine whether revenues need to be improved or whether costs need to be lowered. In the coffee example, the revenues are dictated by the average price per coffe x the number of coffees sold , whereas costs can be split into fixed and variable .

Some examples of fixed costs would be the rent for the stores and the cost of the personnel and utilities, while the most obvious variable costs would be the coffee beans used and the takeaway containers (when needed). We may further split revenues in this case into Main revenues - i.e. the sales of coffee - and Ancillary revenues , which can be divided into Sales of food products (sales of pastries, sandwiches etc., each with the same price x quantity schema) and Revenues from events - i.e renting out the coffee shop to events and catering for the events themselves. Bear in mind that revenues will be heavily influenced by the penetration rate , i.e. the share of the market which we can capture.

6.3 Pricing

Helping a company determine how much they should charge for their goods or services is another theme that comes up frequently in cases. While it may seem less complicated than the other building blocks, we assure you it’s not - you will have to understand and consider several factors, such as the costs a company is incurring, their general strategic positioning, availability, market trends as well as the customers’ willingness to pay (or WTP in short) - so make sure to check out our in-depth guide here .

In our example, we may determine that the cost per cup (coffee beans, staff, rent) is £1. We want to be student friendly so we should consider how much students would want to pay for a coffee as well as how much are competitors are charging. Based on those factors, it would be reasonable to charge on average £2 per cup of coffee. It’s true that our competitors are charging £3 but they are targeting mostly the adult market, whose willingness to pay is higher, so their pricing model takes that into account as well as the lower volume of customers in that demographic.

6.4. Valuation

A variant of the pricing building block, a valuation problem generally asks the candidate to determine how much a client should pay for a specific company (the target of an acquisition) as well as what other factors to consider. The two most important factors (but not the only ones - for a comprehensive review see our Valuation article ) to consider are the net present value (in consulting interviews usually in perpetuity) and the synergies .

In short, the net present value of a company is how much profit it currently brings in, divided by how much that cash flow will depreciate in the future and can be represented with the equation below:

The synergies refer to what could be achieved should the companies operate as one, and can be divided into cost and revenue synergies .

Let’s expand our coffee example a bit to understand these. Imagine that our friend manages to open a chain of coffee shops in Cambridge and in the future considers acquiring a chain of take-out restaurants. The most straightforward example of revenue synergies would be cross-selling, in this case selling coffee in the restaurants as well as in the dedicated stores, and thus getting an immediate boost in market share by using the existing customers of the restaurant chain. A cost synergy would be merging the delivery services of the two businesses to deliver both food and coffee, thus avoiding redundancies and reducing costs associated with twice the number of drivers and vehicles.

6.5. Competitive interaction

This component of cases deals with situations where the market in which a company is operating changes and the company must decide what to do. These changes often have to do with a new player entering the market (again for more details make sure to dive into the Competitive Interaction article ).

Let’s assume that our Cambridge coffee shop has now become a chain and has flagged up to other competitors that Cambridge is a blooming market for coffee. As such, Starbucks has decided to open a few stores in Cambridge themselves, to test this market. The question which might be posed to a candidate is what should our coffee chain do. One way (and a MECE one) to approach the problem is to decide between doing something and doing nothing . We might consider merging with another coffee chain and pooling our resources or playing to our strengths and repositioning ourselves as ‘your student-friendly, shop around the corner’. Just as easily we may just wait the situation out and see whether indeed Starbucks is cutting into our market share - after all, the advantages of our product and services might speak for themselves and Starbucks might end up tanking. Both of these are viable options if argued right and depending on the further specifics of the case.

6.6. Special cases

Most cases deal with private sectors, where the overarching objective entails profit in some form. However, as hinted before, there are cases which deal with other sectors where there are other KPIs in place . The former will usually contain one or several of these building blocks whereas the latter will very likely have neither. This latter category is arguably the one that will stretch your analytical and organisational skills to the limit, since there will be very little familiarity that you can fall back on (McKinsey famously employs such cases in their interview process).

So how do we tackle the structure for such cases? The short answer would be starting from first principles and using the problem driven structure outlined above, but let’s look at a quick example in the form of a McKinsey case :

The first question addressed to the candidate is the following:

This is in fact asking us to build a structure for the case. So what should we have in mind here? Most importantly, we should start with a structure that is MECE and we should remember to do that by considering all the stakeholders . They are on the one hand the government and affiliated institutions and on the other the population. We might then consider which issues might arise for each shareholder and what the benefits for them would be, as well as the risks. This approach is illustrated in the answer McKinsey provides as well:

More than anything, this type of case shows us how important it is to practise and build different types of structures, and think about MECE ways of segmenting the problem.

7. How Do I prepare for case interviews

In consulting fashion, the overall preparation can be structured into theoretical preparation and practical preparation , with each category then being subdivided into individual prep and prep with a partner .

As a general rule, the level and intensity of the preparation will differ based on your background - naturally if you have a business background (and have been part of a consulting club or something similar) your preparation will be less intensive than if you’re starting from scratch. The way we suggest you go about it is to start with theoretical preparation , which means learning about case interviews, business and basic consulting concepts (you can do this using free resources - such as the ones we provide - or if you want a more through preparation you can consider joining our Case Academy as well).

You can then move on to the practical preparation which should start with doing solo cases and focusing on areas of improvement, and then move on to preparation with a partner , which should be another candidate or - ideally - an ex-consultant.

Let’s go into more details with respect to each type of preparation.

7.1. Solo practice

The two most important areas of focus in sole preparation are:

• Mental math

As we mentioned briefly, the best use of your time is to focus on solving cases. You can start with cases listed on MBB sites since they are clearly stated and have worked solutions as well (e.g. Bain is a good place to start) and then move to more complex cases (our Case Library also offers a range of cases of different complexities). To build your confidence, start out on easier case questions, work through with the solutions, and don't worry about time. As you get better, you can move on to more difficult cases and try to get through them more quickly. You should practice around eight case studies on your own to build your confidence.

Another important area of practice is your mental mathematics as this skill will considerably increase your confidence and is neglected by many applicants - much to their immediate regret in the case interview. Find our mental math tool here or in our course, and practice at least ten minutes per day, from day one until the day before the interview.

7.2. Preparation with a partner

There are aspects of an interview - such as asking clarifying questions - which you cannot do alone and this is why, after you feel comfortable, you should move on to practice with another person. There are two options here:

• Practicing with a peer
• Practicing with an ex-consultant

In theory they can be complementary - especially if you’re peer is also preparing for consulting interviews - and each have advantages and disadvantages. A peer is likely to practice with you for free for longer, however you may end up reinforcing some bad habits or unable to get actionable feedback. A consultant will be able to provide you the latter but having their help for the same number of hours as a peer will come at a higher cost. Let’s look at each option in more detail.

7.2.1. Peer preparation

Once you have worked through eight cases solo, you should be ready to simulate the interview more closely and start working with another person.

Here, many candidates turn to peer practice - that is, doing mock case interviews with friends, classmates or others also applying to consulting. If you’re in university, and especially in business school, there will very likely be a consulting club for you to join and do lots of case practice with. If you don’t have anyone to practice, though, or if you just want to get a bit more volume in with others, our free meeting board lets you find fellow applicants from around the world with whom to practice. We recommend practicing around 10 to 15 ‘live’ cases to really get to a point where you feel comfortable.

7.2.2. Preparation with a consultant

You can do a lot practising by yourself and with peers. However, nothing will bring up your skills so quickly and profoundly as working with a real consultant.

Perhaps think about it like boxing. You can practice drills and work on punch bags all you want, but at some point you need to get into the ring and do some actual sparring if you ever want to be ready to fight.

Practicing with an ex consultant is essentialy a simulation of an interview. Of course, it isn’t possible to secure the time of experienced top-tier consultants for free. However, when considering whether you should invest to boost your chances of success, it is worth considering the difference in your salary over even just a few years between getting into a top-tier firm versus a second-tier one. In the light of thousands in increased annual earnings (easily accumulating into millions over multiple years), it becomes clear that getting expert interview help really is one of the best investments you can make in your own future.

Should you decide to make this step, MyConsultingCoach can help, offering bespoke mentoring programmes , where you are paired with a 5+ year experienced, ex-MBB mentor of your choosing, who will then oversee your whole case interview preparation from start to finish - giving you your best possible chance of landing a job!

7.3. Practice for online interviews

Standard preparation for interview case studies will carry directly over to online cases.

However, if you want to do some more specific prep, you can work through cases solo to a timer and using a calculator and/or Excel (online cases generally allow calculators and second computers to help you, whilst these are banned in live case interviews).

Older PST-style questions also make great prep, but a particularly good simulation is the self-assessment tests included in our Case Academy course . These multiple choice business questions conducted with a strict time limit are great preparation for the current crop of online cases.

7.4. Fit interviews

As we’ve noted, even something billed as a case interview is very likely to contain a fit interview as a subset.

We have an article on fit interviews and also include a full set of lessons on how to answer fit questions properly as a subset of our comprehensive Case Academy course .

Here though, the important thing to convey is that you take preparing for fit questions every bit as seriously as you do case prep.

Since they sound the same as you might encounter when interviewing for other industries, the temptation is to regard these as “just normal interview questions”.

However, consulting firms take your answers to these questions a good deal more seriously than elsewhere.

This isn’t just for fluffy “corporate culture” reasons. The long hours and close teamwork, as well as the client-facing nature of management consulting, mean that your personality and ability to get on with others is going to be a big part of making you a tolerable and effective co-worker.

If you know you’ll have to spend 14+ hour working days with someone you hire and that your annual bonus depends on them not alienating clients, you better believe you’ll pay attention to their character in interview.

There are also hard-nosed financial reasons for the likes of McKinsey, Bain and BCG to drill down so hard on your answers.

In particular, top consultancies have huge issues with staff retention. The average management consultant only stays with these firms for around two years before they have moved on to a new industry.

In some cases, consultants bail out because they can’t keep up with the arduous consulting lifestyle of long hours and endless travel. In many instances, though, departing consultants are lured away by exit opportunities - such as the well trodden paths towards internal strategy roles, private equity or becoming a start-up founder.

Indeed, many individuals will intentionally use a two year stint in consulting as something like an MBA they are getting paid for - giving them accelerated exposure to the business world and letting them pivot into something new.

Consulting firms want to get a decent return on investment for training new recruits. Thus, they want hires who not only intend to stick with consulting longer-term, but also have a temperament that makes this feasible and an overall career trajectory where it just makes sense for them to stay put.

This should hammer home the point that, if you want to get an offer, you need to be fully prepared to answer fit questions - and to do so excellently - any time you have a case interview.

8. Interview day - what to expect, with tips

Of course, all this theory is well and good, but a lot of readers might be concerned about what exactly to expect in real life . It’s perfectly reasonable to want to get as clear a picture as possible here - we all want to know what we are going up against when we face a new challenge!

Indeed, it is important to think about your interview in more holistic terms, rather than just focusing on small aspects of analysis. Getting everything exactly correct is less important than the overall approach you take to reasoning and how you communicate - and candidates often lose sight of this fact.

In this section, then, we’ll run through the case interview experience from start to finish, directing you to resources with more details where appropriate. As a supplement to this, the following video from Bain is excellent. It portrays an abridged version of a case interview, but is very useful as a guide to what to expect - not just from Bain, but from McKinsey, BCG and any other high-level consulting firm.

8.1. Getting started

Though you might be shown through to the office by a staff member, usually your interviewer will come and collect you from a waiting area. Either way, when you first encounter them, you should greet your interviewer with a warm smile and a handshake (unless they do not offer their hand). Be confident without verging into arrogance. You will be asked to take a seat in the interviewer’s office, where the interview can then begin.

8.1.1. First impressions

In reality, your assessment begins before you even sit down at your interviewer’s desk. Whether at a conscious level or not, the impression you make within the first few seconds of meeting your interviewer is likely to significantly inform the final hiring decision (again, whether consciously or not).

Your presentation and how you hold yourself and behave are all important . If this seems strange, consider that, if hired, you will be personally responsible for many clients’ impressions of the firm. These things are part of the job! Much of material on the fit interview is useful here, whilst we also cover first impressions and presentation generally in our article on what to wear to interview .

As we have noted above, your interview might start with a fit segment - that is, with the interviewer asking questions about your experiences, your soft skills, and motivation to want to join consulting generally and that firm in particular. In short, the kinds of things a case study can’t tell them about you. We have a fit interview article and course to get you up to speed here.

8.1.2. Down to business

Following an initial conversation, your interviewer will introduce your case study , providing a prompt for the question you have to answer. You will have a pen and paper in front of you and should (neatly) note down the salient pieces of information (keep this up throughout the interview).

It is crucial here that you don’t delve into analysis or calculations straight away . Case prompts can be tricky and easy to misunderstand, especially when you are under pressure. Rather, ask any questions you need to fully understand the case question and then validate that understanding with the interviewer before you kick off any analysis. Better to eliminate mistakes now than experience that sinking feeling of realising you have gotten the whole thing wrong halfway through your case!

This process is covered in our article on identifying the problem and in greater detail in our Case Academy lesson on that subject.

8.1.3. Analysis

Once you understand the problem, you should take a few seconds to set your thoughts in order and draw up an initial structure for how you want to proceed. You might benefit from utilising one or more of our building blocks here to make a strong start. Present this to your interviewer and get their approval before you get into the nuts and bolts of analysis.

We cover the mechanics of how to structure your problem and lead the analysis in our articles here and here and more thoroughly in the MCC Case Academy . What it is important to convey here, though, is that your case interview is supposed to be a conversation rather than a written exam . Your interviewer takes a role closer to a co-worker than an invigilator and you should be conversing with them throughout.

Indeed, how you communicate with your interviewer and explain your rationale is a crucial element of how you will be assessed. Case questions in general, are not posed to see if you can produce the correct answer, but rather to see how you think . Your interviewer wants to see you approach the case in a structured, rational fashion. The only way they are going to know your thought processes, though, is if you tell them!

To demonstrate this point, here is another excellent video from Bain, where candidates are compared.

Note that multiple different answers to each question are considered acceptable and that Bain is primarily concerned with the thought processes of the candidate’s exhibit .

Another reason why communication is absolutely essential to case interview success is the simple reason that you will not have all the facts you need to complete your analysis at the outset. Rather, you will usually have to ask the interviewer for additional data throughout the case to allow you to proceed .

NB: Don't be let down by your math!

Your ability to quickly and accurately interpret these charts and other figures under pressure is one of the skills that is being assessed. You will also need to make any calculations with the same speed and accuracy (without a calculator!). As such, be sure that you are up to speed on your consulting math .

8.1.4. Recommendation

Finally, you will be asked to present a recommendation. This should be delivered in a brief, top-down "elevator pitch" format , as if you are speaking to a time-pressured CEO. Again here, how you communicate will be just as important as the details of what you say, and you should aim to speak clearly and with confidence.

For more detail on how to give the perfect recommendation, take a look at our articles on the Pyramid Principle and providing recommendations , as well the relevant lesson within MCC Academy .

8.1.5. Wrapping up

After your case is complete, there might be a few more fit questions - including a chance for you to ask some questions of the interviewer . This is your opportunity to make a good parting impression.

We deal with the details in our fit interview resources. However, it is always worth bearing in mind just how many candidates your interviewers are going to see giving similar answers to the same questions in the same office. A pretty obvious pre-requisite to being considered for a job is that your interviewer remembers you in the first place. Whilst you shouldn't do something stupid just to be noticed, asking interesting parting questions is a good way to be remembered.

Now, with the interview wrapped up, it’s time to shake hands, thank the interviewer for their time and leave the room .

You might have other interviews or tests that day or you might be heading home. Either way, if know that you did all you could to prepare, you can leave content in the knowledge that you have the best possible chance of receiving an email with a job offer. This is our mission at MCC - to provide all the resources you need to realise your full potential and land your dream consulting job!

8.2. Remote and one-way interview tips

Zoom case interviews and “one-way” automated fit interviews are becoming more common as selection processes are increasingly remote, with these new formats being accompanied by their own unique challenges.

Obviously you won’t have to worry about lobbies and shaking hands for a video interview. However, a lot remains the same. You still need to do the same prep in terms of getting good at case cracking and expressing your fit answers. The specific considerations around remote interviews are, in effect, around making sure you come across as effectively as you would in person.

8.2.1. Connection

It sounds trivial, but a successful video interview of any kind presupposes a functioning computer with a stable and sufficient internet connection.

Absolutely don’t forget to have your laptop plugged in, as your battery will definitely let you down mid-interview. Similarly, make sure any housemates or family know not to use the microwave, vacuum cleaner or anything else that makes wifi cut out (or makes a lot of noise, obviously)

If you have to connect on a platform you don’t use much (for example, if it’s on Teams and you’re used to Zoom), make sure you have the up to date version of the app in advance, rather than having to wait for an obligatory download and end up late to join. Whilst you’re at it, make sure you’re familiar with the controls etc. At the risk of being made fun of, don’t be afraid to have a practice call with a friend.

8.2.2. Dress

You might get guidance on a slightly more relaxed dress code for a Zoom interview. However, if in doubt, dress as you would for the real thing (see our article here ).

Either way, always remember that presentation is part of what you are being assessed on - the firm needs to know you can be presentable for clients. Taking this stuff seriously also shows respect for your interviewer and their time in interviewing you.

8.2.3. Lighting

An aspect of presentation that you have to devote some thought to for a Zoom interview is your lighting.

Hopefully, you long ago nailed a lighting set-up during the Covid lockdowns. However, make sure to check your lighting in advance with your webcam - bearing in mind what time if day your interview actually is. If your interview is late afternoon, don’t just check in the morning. Make sure you aren’t going to be blinded from light coming in a window behind your screen, or that you end up with the weird shadow stripes from blinds all over your face.

Natural light is always best, but if there won’t be much of that during your interview, you’ll likely want to experiment with moving some lamps around.

8.2.4. Clarity

The actual stories you tell in an automated “one-way” fit interview will be the same as for a live equivalent. If anything, things should be easier, as you can rattle off a practised monologue without an interviewer interrupting you to ask for clarifications.

You can probably also assume that the algorithm assessing your performance is sufficiently capable that it will be observing you at much the same level as a human interviewer. However, it is probably still worth speaking as clearly as possible with these kinds of interviews and paying extra attention to your lighting to ensure that your face is clearly visible.

No doubt the AIs scoring these interviews are improving all the time, but you still want to make their job as easy as possible. Just think about the same things as you would with a live Zoom interview, but more so.

9. How we can help

There are lots of great free resources on this site to get you started with preparation, from all our articles on case solving and consulting skills to our free case library and peer practice meeting board .

To step your preparation up a notch, though, our Case Academy course will give you everything you need to know to solve the most complex of cases - whether those are in live interviews, with chatbots, written tests or any other format.

Whatever kind of case you end up facing, nothing will bring up your skillset faster than the kind of acute, actionable feedback you can get from a mock case interview a real, MBB consultant. Whilst it's possible to get by without this kind of coaching, it does tend to be the biggest single difference maker for successful candidates.

You can find out more on our coaching page:

Explore Coaching

Of course, for those looking for a truly comprehensive programme, with a 5+ year experienced MBB consultant overseeing their entire prep personally, from networking and applications right through to your offer, we have our mentoring programmes.

You can read more here:

Comprehensive Mentoring

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S T R E E T OF W A L L S

Consulting case study 101: an introduction to frameworks.

Before we look at individual Cases, it is important to begin by looking at analysis frameworks that commonly can be used to address Case Study questions. In this chapter, we will outline some of the core frameworks and some additional Consulting concepts that are important to grasp and will form part of many interviews. The frameworks will be helpful to answer certain types of cases, depending on the type of case.  In reality, few case interviews or real-life business situations cover just one concept or business problem, so you have to have the flexibility to apply a range of concepts/structures.  For example, a Company bringing a new product to market would require a market size analysis, competitor analysis, as well as understanding the key customer segments.

The more you practice, the easier the cases will become and the more articulate and structured you’ll be in your answers.

An important note on this: historically, the vast majority of Consulting candidates have used specific business frameworks to answer cases.  Frameworks remain important as concepts to answer Case Studies, but you should absolutely avoid any rigid use of a specific framework . In reality, the main purpose of learning the frameworks is to help you to structure your answers , just as the case situations in our later examples should do.

The key frameworks that follow should be used directly in certain Case situations , but more broadly they should be used as a way to expand your strategic thinking , which is the critical component of success in the Case Study interview process. Ultimately, a top-flight candidate will build his or her own framework/structure for evaluating the Case as it progresses, often drawing from many of the frameworks and concepts in this module, and potentially others. In other words, you should absolutely avoid using the phrase, “I will apply framework X to this case.” However, be aware of the “famous” frameworks in case they are mentioned in an interview setting, and don’t be shy about referencing them as you dive into the specifics of the Case Study you’re evaluating.

Porter’s Five Forces

Porter’s Five Forces has become an incredibly well known framework in the business strategy world. It is probably the most famous of all of them. It was introduced by Harvard Professor and Monitor Consulting firm founder Michael Porter.  Porter’s Five Forces is a high-level framework that you can draw upon to perform a market landscape and competitor dynamics analysis. It can help determine whether a market or company is attractive, whether the client for whom the analysis is being performed is a private equity firm thinking about buying a company, or a major company thinking about entering or exiting a certain market segment. In most cases, a Case Study will address at least some of the components found in this framework.

Here are the Five Forces in detail:

Porter’s Five Forces

• Legal or regulatory barriers (for example, patents or government contracts)
• Economies of scale
• Cost advantage (for example, unique access to lower raw material costs)
• Access to distribution channels
• Product differentiation (for example, how is this product different?)
• Industry growth rate
• Industry fragmentation
• Level of switching costs
• Motivation to reduce prices (for example, from excess capacity)
• Level of substitute products
• Buyer’s decision influenced by supplier
• Supplier inputs/products have high switching costs
• Supplier has potential to forward integrate
• Supplier accounts for large share of the inputs/products
• High customer/client concentration
• Level of commoditization of product/input
• Level of switching costs for buyer
• Buyer has significant product/market information
• Substitute products/services that can compete on price and/or quality
• Switching costs to shift to substitute products

This simple framework has been around for a long time as a way to think about any industry or company, and applies broadly to a wide range of Case Study questions. If you compare the description below to that of Porter’s Five Forces above, you will see that there is substantial overlap.

The “3 Cs” approach is to address any Case situation by assessing the:

• Competitors
• Customers/clients

The 3 C’s

• Pros and cons of product/service
• Value chain
• Revenue (price × volume) and expenses
• Core competencies
• Regulatory environment
• Distribution network
• Management and core employees
• Market share
• Fragmentation
• Financial situation (for example, deep pocket competitors?)
• Other competencies (for example, marketing or distribution channels)
• Value proposition versus client
• Demographics (age, gender, etc.)
• Value of core customers/clients
• Wants and needs of customers/clients
• Customer/client segment sizes
• Customer/client segment shares
• Customer/client segment growth rate
• Product characteristics
• Personnel (especially for B2B)

This framework is often used specifically whenever there is a marketing component involved in a case (for example: how to increase sales resulting from any profitability optimization case, deciding on an approach to enter a market, etc.). When combined with the 3 Cs, this framework can cover many topics and as you practice more Case Study questions, you’ll develop a better sense of when and how to draw from these frameworks.

The “4 Ps” approach is to address a marketing-oriented Case situation by assessing the:

The 4 P’s

• Commoditized or differentiated?
• How close are the substitutes?
• Value proposition versus substitutes (price, quality, etc.)
• Switching costs
• Why are clients/customers purchasing the product?
• Brand, availability, service, value, reliability, aesthetic, etc.
• Is our product sufficiently better to justify a higher price? Or is it somewhat commoditized?
• Customer loyalty/lock-in
• Supply/demand: current state of demand and supply for the product or service
• Price of substitute products/services
• Price of competitor products/services
• Brand position and perception
• What is the cost for the client to produce the product or offer the service?
• Select/exclusive channels or wide distribution network?
• Seamless delivery to customers
• Internal transport or outsource?
• Specific areas of a site online
• Product placement in stores
• Customer/client awareness
• Is the Company reaching and attracting its target market?
• What are the most effective marketing campaign strategies?
• Return on marketing spend
• Are we retaining our customers/clients?
• Can we up-sell or cross-sell to our current customers/clients?

SWOT (Strengths, Weaknesses, Opportunities, Threats)

SWOT analysis is more of a mini-framework, specifically for quickly evaluating a single company in an industry. In that regard, it’s far less complete than other frameworks, and can often miss important details. However an interviewer could potentially ask you for a SWOT analysis, and you should be prepared to apply it in that case.

SWOT is effectively a quick, high-level market landscape/competitive dynamics analysis arranged using the following terminology:

SWOT Analysis

• Strengths: Company strengths within an industry
• Weaknesses: Company weaknesses within an industry
• Opportunities: Company opportunities available within the industry (or potentially by branching into a new industry)
• Threats: Company threats within the industry (or potentially from companies whose primary business is in another, related industry, or from disruptive technologies that potentially threaten all companies in an industry)

It should be noted that SWOT can be extended from comparing a specific company to the others in the industry, to comparing a specific industry or sub-industry to other, related industries or sub-industries within the economy. For example, a classic SWOT analysis might entail benchmarking Delta Airlines with the airline industry as a whole; an extension could entail benchmarking the entire airline industry against the broad transportation sector.

Other Frameworks

You should be very familiar with the well-known frameworks already discussed in this chapter, although it is unlikely that an interviewer would ask you to use a particular framework in your analysis. Instead, it is typically expected that you draw on the concepts encompassed by these frameworks and/or the concepts that we will outline in the next chapter, which breaks down the common Case Study interview question types .

In addition to these frameworks, there are a number of other frameworks that you will read about on certain Consulting firm sites, but you will probably not be expected to know them in detail or apply them specifically in an interview. It does not hurt, however, to be familiar with them. Therefore, we include these example frameworks for your reference and encourage you to at least familiarize yourself with the basics of them:

• The BCG Growth Share Matrix for evaluating product or business lines
• The McKinsey 7S Framework for evaluating organizational effectiveness
• The Product/Market Grid to determine growth opportunities
• Force Field Analysis for Change Management
• The Affinity Diagram for organizing ideas and information

Additional Analysis Concepts

There are additional, relatively simple analytical techniques that you should be prepared for in Consulting Case Study interviews. These techniques tend to be numerical, and occur frequently, although none are comprehensive or broad enough to fall into the category of a “Framework”:

Break-Even Analysis

Fixed vs. variable expenses, net profit margin, return on investment (roi), compound annual growth rate (cagr).

• Lifetime Customer Value (LCV; sometimes referred to as “User Lifetime Value”)

Product Life Cycle

Opportunity cost, elasticity (supply or demand).

• Financial Statements, Accounting, and Valuation

Let’s take a deeper look at each analysis category.

• The gist of Break-Even Analysis cases is that the Fixed Costs of a business—i.e., the costs that are unavoidable—need to be overcome by making profit from sales of products. Presumably, each incremental sale contributes to profit at a rate that can be determined (or at least estimated); the question that is to be answered is, “How many units do I have to sell in order to overcome my Fixed Costs, i.e., to ‘Break Even’?”
• In other words, the Break-Even Point is the number of units sold at which Revenue equals Total Expenses (Fixed Expenses plus Variable Expenses).
• Break-Even Analysis is often applied when deciding whether to develop a new product or make a capital equipment investment, as well as helping in making decisions around how to price products and service and the number of units to produce.
• Formulaically, Break-Even Number of Units = Fixed expenses ÷ (Revenue per unit – Variable Expenses per unit).
• Note that the expression ( Revenue per unit – Variable Expenses per unit ) is often referred to as the Unit Contribution Margin .
• An understanding of how to analyze Expenses and differentiate Fixed Expenses from Variable Expenses is useful in order to run a Break-Even Analysis of a company.
• Break-Even Analysis can get more complex, as there are microeconomic and macroeconomic considerations that can change both the Fixed and Variable Expenses, but the basic concept is an important one; therefore you will likely come across some form of Break-Even Analysis in Consulting Case Study interviews.
• Note that this concept can also be translated into a question on Break-Even Price , i.e., “Assuming a certain volume of sales, what is the sales price required in order to break even?”
• Formulaically, Break-Even Price = (Fixed Expenses ÷ Sales Volume) + Variable Expenses per unit .
• Note that the expression ( Fixed Expenses ÷ Sales Volume ) equates to the required Unit Contribution Margin at the assumed Sales Volume in order to break even. In other words, Break-Even Price = Required Unit Contribution Margin + Variable Expenses per Unit .
• Fixed Expenses (or Fixed Costs ) are expenses that do typically fluctuate regardless of the production or sales levels. These expenses can be viewed as “unavoidable,” at least in the short-term. Typical examples for Fixed Expenses include Rent, Insurance, Mortgage Payments, and Corporate Overhead Expenses.
• Variable Expenses (or Variable Costs ) are impacted by changes in production or sales levels – typical examples include are Raw Materials, Direct Labor Expenses (wages and benefits), and delivery costs.
• Understanding a Company’s Fixed vs. Variable Cost structure is important in a variety of cases (such as in Break-Even Analysis, discussed above).
• When analyzing a Case, always keep in mind that total Fixed Expenses remain constant as volume rises (or falls), but Fixed Expenses per unit decline as volume rises (rise as volume falls). For example, if a computer component manufacturer has $1,000 of Fixed Expenses and produces 100 components, then the $1,000 of Fixed Expenses will be spread across 100 components (= $10 of Fixed Expenses per unit). If the Company produced 200 components, then the Fixed Expenses per unit would decrease to $5 per unit.
• Variable Expenses, meanwhile, rise proportionately as volume increases, so Variable Expenses per unit remain constant.
• When an interviewer asks a candidate to calculate the Net Profit Margin (a.k.a. Profit Margin or Net Income Margin ), he or she will usually be referring to the total Net Income of a company or business line as a percentage of its Revenue: Net Profit Margin = Net Income ÷ Total Revenue.
• The interviewer could also refer to Gross Profit Margin , which is simply Gross Profit as a percentage of revenue: Gross Profit Margin = Gross Profit ÷ Total Revenue
• Similarly, the interview may also refer to Operating Profit Margin ( EBIT Margin ), or EBITDA Margin . In both cases, thus is simply the figure in question (Operating Profit, a.k.a. EBIT, or EBITDA) as a percentage of Revenue.
• Return on Investment (ROI) is a ratio that determines the return, or Profit, from capital invested. ROI is used in consulting interviews as a way to evaluate the return of a particular investment or to assess the feasibility of a potential investment or acquisition. Many companies have an internal ROI metric for capital investments.
• Standard ROI is calculated as follows: Profit from the Investment (Revenue minus Costs) ÷ Capital Invested .
• Note: Return on Assets (ROA) is a variation of this concept, but instead revolves around all capital invested in a project (Liabilities + Equity), rather than just Equity invested, which is typical for an ROI calculation.
• The Compound Annual Growth Rate (CAGR) is the percentage rate at which any figure, such as number of units sold, a population, or an investment must grow in each year to reach a given end value over a certain amount of time. (Note that this is not the only growth path to grow from a beginning number to an ending number, but it is the only growth path that is the same growth rate every year .)
• The formula to calculate CAGR is: [(Ending Value ÷ Beginning Value)^(1 ÷ Number of Years)] – 1.
• For example: If sales grew from $1,000 in the year 2001, when a store opened, to $2,100 in 2012, what is the CAGR?
• Answer: [(2,100 ÷ 1,000)^(1 ÷ 11)] – 1 = 2.1^(0.090909) = 7.0%
• Thus, the CAGR between 2001 and 2012 was 7.0%.
• CAGR is very similar in concept to Internal Rate of Return (IRR), which is the annual rate of return on an investment if its value grows by a specific multiple over a specific amount of time.
• Use the Rule of 72 to estimate CAGR whenever possible. The rule of 72 simply states that a quantity will roughly double in value whenever the number of years times the annual growth rate equals 72.
• Using the above example, we can see that the quantity slightly more than doubled, so the answer should be slightly above (72 ÷ 11) percent, or slightly above 6.6%. Indeed, it is!

Lifetime Customer Value (LCV)

• Lifetime Customer Value (LCV) projects the total profitability attributed to a firm’s future relationship to a typical customer.
• The idea behind this microeconomic analysis is to determine the reasonable cost to win or acquire a customer (or to maintain an existing customer, i.e., prevent him or her from “churning,” or switching to a competitor). It can also be used to determine level and type of customer service to provide, and as another way to estimate the value of a business. (In theory, the value of a business should equal the number of existing customers × the LCV per customer , plus growth opportunities.)
• The steps to calculate the LCV are as follows:
• Estimate the remaining customer years; in other words, how long is a typical customer expected to last with the company?
• Estimate future Revenue per year per customer, based on product volume per customer × price
• Estimate Total Expenses for producing those products (either separating Fixed Costs out or allocating them on a per-customer basis)
• Calculate the Net Present Value of the future profit (Revenue – Expenses) per customer (in other words, discount these future profits back into today’s equivalent dollars)
• Important for market sizing problems, the Product Life Cycle helps to calculate and project the annual market size for a given market/industry. It is often used by companies to project their own anticipated Revenue figures.
• Formulaically, Annual Market Size = Total Revenue of a product outstanding ÷ Average life of the product . For example, “Total Revenue of a product outstanding” might represent the sticker price of all cars driven in the US, while the “Average life of the product” would be the average number of years a car is driven.
• It is also worth knowing the four steps in the Product Life Cycle Curve , as the concept could come up in a hypothetical product case.
• Emerging: A new product or technology that is in initial adoption phases and therefore has very rapid growth rates (for example: electric cars)
• Growth: Product adoption is becoming widespread but still growing at an above-average rate (for example: smartphones)
• Maturity: Product adoption is widespread, or at least stabilized; growth typically comes only from price increases and growth in GDP (for example: breakfast cereal)
• Declining: Technological obsolescence, shifting consumption patterns, or increased market competition has resulted in total growth rates that are below-average or negative (for example: dairy products or wireline telephones)
• Opportunity Cost simply refers to the concept that if a person or company does X , the person or company necessarily cannot also do Y .  This is an important concept throughout business and consumer decision making, as there are only finite resources available in most cases (time, money, etc.).
• Thus, for example, it is unwise for a company to invest $1 million in a project earning $3 million if that same investment prevents it from investing the $1 million in another opportunity that would earn $10 million. In this case, the Opportunity Cost can be defined as the loss of incremental profit of $7 million ($10 million potential profit lost minus the $3 million earned).
• If X does not prevent also doing Y , then there is said to be “no Opportunity Cost” of doing X with respect to Y . In the above example, if the company had $2 million to invest and the capacity to manage both projects, it could reap the profits from both projects, i.e., $13 million.
• Elasticity is a concept from microeconomics that describes the tradeoff between Quantity and Price.
• Specifically, Elasticity is the ratio of a percentage change in quantity to the percentage change in price. Formulaically, Elasticity = % Change in Quantity Demanded or Supplied ÷ % Change in Price .
• For example, if an increase in the price of oranges from $1.00 apiece to $1.50 apiece causes demand for those oranges to fall from 100 units to 80 units, then the % Change in Quantity = –20% and the % Change in Price = 50%. Therefore the Elasticity of Demand = (–20 ÷ 50) = –0.4.
• Note that for normal goods, Elasticity of Demand will always be negative (higher prices mean less quantity is purchased) while Elasticity of Supply will always be positive (higher prices mean that suppliers are willing to produce and/or supply more goods).
• The concept comes up in multiple types of cases, such as pricing optimization. Clients often ask what the impact would be on volume if they adjust the price. Usually the correct answer is to increase prices in Inelastic markets (price increases lead to a relatively small decrease in products sold) and decrease them in Highly Elastic markets (price increases lead to a large decrease in product sold).

Financial Statements, Accounting and Valuation

Unlike Investment Banking interviews, which can be detailed and highly technical in terms of Finance and Accounting, Consulting interviews and the Consulting job itself revolve much more around estimation and exercising business judgment and “what-if” analysis. Rarely would a Consultant be called upon to develop and maintain a detailed, precise financial model for Discounted Cash Flow valuation, for example.

That being said, a basic-to-moderate understanding of the Income Statement, Balance Sheet and Statement of Cash Flows, and how they work together, is very relevant to many interviews. (You might even be provided with a basic Income Statement or Balance Sheet of a company as part of a Case Study interview question.)

Rather than reinventing the wheel and writing content on Finance and Accounting in this guide, we recommend you review any standard, basic Financial Accounting textbook to familiarize yourself with the components of basic Financial Statements:

• Income Statement (Revenue, Expenses, and Profit)
• Balance Sheet (Assets, Liabilities, and Equity)
• Statement of Cash Flows (Cash Flows broken out into the following categories of sources: Operating Activities, Investing Activities and Financing Activities)

We also recommend that you familiarize yourself with some basic core Finance concepts (Net Income, EBIT (Operating Profit), EBITDA, Free Cash Flow, Internal Rate of Return, Net Present Value, and Enterprise Value are good places to start) and core Valuation techniques (Cost of Capital, Comparable Company Analysis, Precedent Transaction Analysis, Discounted Cash Flow analysis, and Leverage Buyout analysis).  Although these concepts will not be tested and do not form a major part of general Consulting Case Study interviews, these topics can appear in a general discussion about a particular business situation and you should be able to discuss them at least on a basic level.

If you are applying for a job in Business Development, or for a Consulting position in a Corporate Finance group or at a firm that does a lot of Corporate Finance Consulting work, then you should definitely study up and be prepared for these core Finance and Accounting concepts, because they will likely be tested on in detail in your interviews. In addition to introductory Finance and Accounting textbooks, we highly recommend that these candidates read the Street of Walls Investment Banking Technical Training guide, which addresses complex details around Financial Statements, Accounting and Valuation at a very detailed level. (We also recommend this training guide in general to anyone who is interested in advancing their Finance and Accounting skills—particularly when it comes to Corporate Valuation.)