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The Case Interview Format

When applying to top consulting firms, one of the most crucial stages of the interview process is the case interview. This format is designed to assess your analytical competencies, problem-solving skills, and ability to think strategically under pressure. Let's take a look at what to expect.  
 

 

Structure of a Case Interview

A case interview is a 30-minute simulation of a typical business project that consultants may have worked on. Cases provide a real example of an on-the-job experience and the assumption is that if a candidate is successfully able to tackle a case interview, he or she is also more likely to be a successful management consultant.

Case studies are the most important and usually the longest part of consulting interviews. In addition to the case study, the interview typically includes introductory small talk, a personal fit interview, and closing questions (see the illustration below).

The graph shows the process of a case-interview, based on 4 steps.

Many companies review and standardize their consulting cases prior to a real interview to ensure that the case is neither too difficult nor too easy. Companies also ensure that a variety of skills are tested during the interviews.

 

The Typical Flow of a Case Interview

The case interview typically follows a structured flow to ensure that both the interviewer and the candidate cover all necessary aspects of the business problem. It involves the following phases:

1. Case Presentation and Problem Understanding

To start off, the interviewer will present a specific business problem or scenario. This could range from market entry considerations, to profitability issues, or organizational changes. The problem is usually based on real-world business issues that the consulting firm dealt with in the past.

You are expected to listen carefully, take notes, and clarify any points that are not clear to fully understand the scope and context of the problem.

👉 To get a better feeling for possible case prompts, check out the following beginner cases. 

Company case provided by Company case by
DHL Consulting
DHL Consulting case: Bike Shop
You have been hired to support the owner of a bike-shop as a business consultant. The bike-shop has suffered a significant revenue decline during the last year, and now the owner would like you to assess the situation and options for the way forward.They want to know last year’s profit, i.e. how it was affected by the revenue decline, and what the priority actions are to survive the next year. (short term)In addition they would like to understand the strategic competitive position of the shop better and how to increase revenues again mid- to long-term.
4.4
93.6k times solved
Difficulty: Beginner
Interviewer-led
Growth strategy
Profitability analysis
Expert case by
Emily
FastFood Chain Turnaround
Our client (FastFood Co) is a fast-food company that has > 20 restaurants in the city. Recently, the business has encountered significant challenges, with net profit drops to negative.The client wants us to help them turn around the business. How would you help them?
4.9
1.9k times solved
Difficulty: Beginner
Candidate-led
Profitability analysis

2. Framework Development

Afterwards, you outline a structured approach or framework to tackle the problem. Common frameworks include the SWOT analysis, Porter’s Five Forces, or the 4P's, with which you can structure your information. This step demonstrates your ability to break down complex issues into manageable parts.

However, keep in mind that it is not enough to simply memorize the standard framework concepts. While standard frameworks are useful for a rudimentary outline of a case problem, they need to be optimized and adapted to the individual case. Don't worry, as this is a skill you can develop, but it definitely requires thorough preparation and practice

Once you have crafted your structure, clearly explain your framework to the interviewer, ensuring he or she understands your thought process and logical flow.

3. Analysis and Problem Solving

Next, you dive into the analysis. During the interview, your interviewer may provide additional data, charts or exhibits. Analyze this information to support your framework and build your argument. Formulate hypotheses based on your analysis and test them against the data provided. If needed, adjust your approach based on your new findings.

During the quantitative analysis, perform the necessary calculations to support your findings. This could include market sizing estimations, profitability calculations or a cost analysis. Good mental math skills will definitely help in this phase. 

4. Recommendations

Once you have worked through your structure, provide clear, and actionable recommendations based on your analysis. Use the Pyramid Principle of communication, highlight your key findings and explain how they address the problem.

You should also be ready to justify your suggestions with evidence from your analysis (i. e. data) and discuss possible next steps or further areas of investigation that the client may wish to consider.

After all, the interviewer may question your conclusions or ask for further clarification. Be prepared to defend your recommendations and discuss alternative perspectives. 

After, all the best way to prepare for your interview is practice. Explore our Case Library with real examples now!

Company case provided by Company case by
thyssenkrupp Management Consulting
tkMC Case: Market entry strategy in the lithium materials trade market
Your client tk Commodity Trade (tk ComT) is a global materials trader - they buy and sell raw materials. tk ComT had stable EBITDA margins in recent years. They consider expanding their target market and entering the Lithium (electric vehicle battery grade) trade, due to the current high demand for electric cars and Lithium-ion batteries. The client is concerned about minimizing the cash spending and about improving the payback period for this market-entry campaign, due to corporate cash policy.As a consultant, you are expected to calculate the size of the Lithium market and to assess the payback periods for an organic market entry (with own resources) as well as for the acquisition of an established company. Finally, the client expects a proposal about the best market entry strategy and potential opportunities and risks.
4.0
27.6k times solved
Difficulty: Intermediate
Interviewer-led
Market entry
New product
Profitability analysis
Expert case by
Alberto
MBB Second Round - Fashion Market Expansion
Our client is Chic & Stitch. They make tailor-made clothes for modern women. They focus on quality and fit. Their work covers design, retail, and tailoring. Now, they want to expand to the Barcelona. They hired you to see if that’s a good idea.
2.5
900+ times solved
Difficulty: Advanced
Candidate-led
Market entry
Case by
PrepLounge
Increasing net worth of Johnny Depp
Johnny Depp, now 56 years old, has started to feel that his acting career is about to get over. His net worth crossed over $650 million at the peak of his career but has since dwindled, amid lawsuits and lifestyle expenses. As such, he thinks that his current wealth might not be enough for his upcoming years. So, he’s hired you as a consultant to help him find ways to multiply his worth. What can you suggest?
4.3
2.6k times solved
Difficulty: Intermediate
Interviewer-led
Brain teaser
Market analysis
New product
Case by
PrepLounge
PE Portfolio Strategy
We are a private equity firm operating primarily in the automotive industry. We would like you to figure out whether we should increase our portfolio in the sensor market or not.We would like you to do a profit/margin growth potential analysis and tell us how we can add value to this company given the other companies in our portfolio.
4.1
9.7k times solved
Difficulty: Intermediate
Candidate-led
Growth strategy
Profitability analysis
Company case provided by Company case by
RSM Ebner Stolz Management Consultants
RSM Ebner Stolz Case: Noch zu retten?
Sie werden vom Management der mittelständischen Packaging-Group gebeten, eine Einschätzung zur wirtschaftlichen Lage des Konzerns abzugeben. Im Rahmen der Analyse der operativen Ergebnisse der Auslandswerke soll das Werk identifiziert werden, bei dem der aktuell größte Handlungsbedarf besteht. Davon ausgehend sollen Optionen erarbeitet und bewertet werden, die der Kandidat dem Management im Umgang mit diesem Auslandswerk empfehlen würde und was ggf. auf Basis der Analyse für Rückschlüsse hinsichtlich der Konzernzahlen gezogen werden können.
3.1
12.2k times solved
Difficulty: Intermediate
Interviewer-led
Operations strategy
Profitability analysis
Case by
PrepLounge
Working Capital & Cash Flow Interview Questions for Finance
Working capital and cash flow are core drivers of a company’s liquidity and financial health, and they frequently come up in finance interviews. This case will test your understanding of working capital basics, the cash conversion cycle, links to free cash flow, and practical ways companies manage short-term financing needs.
5.0
500+ times solved
Difficulty: Intermediate
Interviewer-led
Non-conventional
Operations strategy
Expert case by
Benjamin
Revolut Mock Interview: Strategy & Operations
You are part of the Strategy & Operations team at Revolut.Revolut has had significant growth over the past couple of years, with customer base growing 20-30% per year. Our apps have also been highly rated in the various app stores - be it GooglePlay or on the Apple store.Revolut's current customer strategy is to segment customers based on their subscription tiers/plans. Standard: FreePlus: $3.99/mthPremium: $7.99/mthMetal: $14.99/mthUltra: Ultra $55/mthKey differentiation between the plans are in the pricing and features. Namely, the more expensive tiers like Metal and Ultra have additional features such as personalized and premium card design, free access to lifestyle apps (e.g. Financial Times, Class Pass etc), better FX rates and priority customer support.It's great that Revolut has been expanding rapidly, but we are starting to see some stresses on our existing operations and processes. One key area of concern is in customer service, our satisfaction scores have started to trend down and call center headcounts and costs have been increasing in recent years, but we are struggling to handle the load of incoming requests and tickets.You have been tasked to lead a project to solve this problem without ballooning costs. 
4.0
1.3k times solved
Difficulty: Advanced
Interviewer-led
Operations strategy
Case by
PrepLounge
Barb's BBQ Booth
One day you are grocery shopping when you are approached by Barb B. Queue, the owner of the supermarket’s deli shop. Facing serious competition from other supermarkets and fast food chains, Barb is worried whether his shop is working alright, as lately profits have been stagnating. He had figured that you work in a renowned consultancy and seeks your advice. Because you are a consultant from the bottom of your heart, you agree and sit together with Barb and have a look into his books.
4.5
13.6k times solved
Difficulty: Beginner
Candidate-led
Market analysis
Profitability analysis
Company case provided by Company case by
Berg Lund & Company
Berg Lund & Company Case: Value Growth Strategy - Northern Retail Bank
Du befindest Dich derzeit in einem strategischen Projekteinsatz bei der Northern Retail Bank (NRB), die vor drei Jahren von einem Finanzinvestor übernommen wurde. Während des Mittagessens lädt Dich der CEO zu einem Espresso in sein Büro ein. Dort erläutert er, dass der Finanzinvestor bestrebt ist, den Unternehmenswert der Bank zu steigern – möglicherweise für einen künftigen Verkauf oder Börsengang, weitere Details stehen zum jetzigen Zeitpunkt noch nicht fest. Gemeinsam mit Deinem Projektteam sollst Du nun Maßnahmen entwickeln, um die Profitabilität der Bank zu verbessern. Angesichts der Ergebnisse des letzten Geschäftsjahres und des intensiven Wettbewerbsdrucks sieht der CEO hier dringenden Handlungsbedarf.Der CEO bittet Dich darum, in 30–45 Minuten in sein Büro zurückzukommen, um Deine fachkundige Einschätzung für erste konkrete Stellhebel zu diskutieren.
4.9
4.4k times solved
Difficulty: Intermediate
Interviewer-led
Operations strategy
Restructuring
Case by
PrepLounge
Nearshoring - Opportunity study and Business case
Your client is an international Corporate & Investment Bank (CIB). It is France based and has already expanded to Poland (Warsaw), Asia and Americas. Your client now wants to look into the development of the existing hub in Warsaw and is contacting you to help him assess this option. How would you help him?
4.2
3.1k times solved
Difficulty: Intermediate
Candidate-led
Operations strategy
Profitability analysis
Expert case by
Benjamin
BCG Beginner Case: Fashion startup
Your client is a D2C (direct to customer) online fashion business in a developing country. It is a new brand, launched about 2 years ago and founded by ex-investment bankers. Their brand focuses on trendy, edgy design that is less main-stream (versus big brands like H&M, Uniqlo, Zara etc) for adult men. While they have been growing fast, they want to understand how they can further improve their sales.
4.3
1.4k times solved
Difficulty: Beginner
Interviewer-led
Growth strategy
Expert case by
Benjamin
McKinsey Unconventional Case: Inclusive Cafes
Your client is a leading retail coffee chain. They are present in several countries globally and are a popular brand in most of the markets that they operate in, with several thousands stores in operation.A key focus of the company currently is diversity & inclusion. In their biggest market which is the US, 1 in 4 people have some sort of disability. One realization the client has had is that their retail stores are not as inclusive to individuals with disabilities. McKinsey has been brought on to help them design more inclusive spaces in their retail stores.
4.5
1.3k times solved
Difficulty: Intermediate
Interviewer-led
Non-conventional
Company case provided by Company case by
Mercedes-Benz Management Consulting
MBMC Case: AMG | Turning the most affluent prospects into loyal clients
As a consultant at Mercedes-Benz Management Consulting (MBMC), you actively shape the desire for Mercedes-Benz as an iconic luxury brand. While you contribute to decisive projects that design the future of the world’s No.1 premium carmaker, you also develop your own career path, and have the unique possibility to build your personal brand and cultivate relationships with the top management.Your client on your current project is the head of Top-End Vehicles & Mercedes-AMG GmbH who reports directly to the CTO of the Mercedes-Benz Group AG. AMG represents the segment of performance luxury within the Mercedes-Benz portfolio.As part of your current project scope your client asks you to identify new opportunities to attract top-end customers & retain their loyalty. Therefore, you shall structure and explore the customer journey and identify possible measures regarding top end customer & Community Management. Furthermore, you shall quantitatively analyze an option to individualize AMG products along different regions and prepare them for decision.Finally, of course, the client is interested in your recommendation.
3.8
12.4k times solved
Difficulty: Intermediate
Interviewer-led
Growth strategy
New product
Profitability analysis
Case by
PrepLounge
Gas station
How many gas stations are there in Paris? Suppose a friend of yours wants to open a gas station in Paris. What aspects should he consider?
4.4
53.9k times solved
Difficulty: Intermediate
Interviewer-led
Market entry
Market sizing
Expert case by
Benjamin
MBB Unconventional Case: Coral Reefs
Your client is the Government of Indonesia, specifically a joint committee formed between a few key ministries including the Ministry of Marine Affairs & Fisheries, Ministry of Tourism and Ministry of Environment & Forestry. Indonesia is one of the largest developing countries in the world, with a population of about 285M people and an average monthly income of only USD 500. Located in Southeast Asia, Indonesia is actually a vast archipelago comprised of 17,000 islands, giving it one of the longest and most complex coastlines in the world. It is also part of the Coral Triangle, an area demarcated by scientists as the global epicenter of marine diversity. Your client tells you that Indonesia's once pristine coral reefs have seen a rapid decline over the past decade. They have come to you for help and want to figure out what is causing the problem.
5.0
700+ times solved
Difficulty: Advanced
Candidate-led
Non-conventional
Public sector
Case by
PrepLounge
Spain Shipping
Our client is a local shipping firm in Spain where they handle local shipping of packages delivered by international shipping firms like FedEx, UPS & DHL. These firms deliver packages to the key city hubs and then our client takes it from there.They want to know how many trucks they should lease to support their operations. From a cost-savings perspective they can only lease one model-type and we need to find out how many trucks the start-up needs.
4.2
5.1k times solved
Difficulty: Beginner
Candidate-led
Operations strategy
Profitability analysis
Case by
PrepLounge
Universal Airlines
Our client is Universal Airlines that offers regular passenger flights in economy, business & first class. They have been doing quite well and profits were strong so they build up cash reserves that they are now looking to invest. The company is thinking about investing in the MRO business (Maintenance, Repair & Overhaul) for global business jets. The client has asked us to help him size up the market.
4.0
10.8k times solved
Difficulty: Advanced
Interviewer-led
Market entry
Market sizing
Case by
PrepLounge
Universal TV
Our client is a Canadian TV company, Universal TV. They recently entered the US market in the northeast to expand its market share and capture a large part of the 4 m consumers in a market that has little competition. However, in the past few years, Universal TV has been unable to realize a profit.You are hired to figure out why this is the case and what their next move should be.
4.1
7.4k times solved
Difficulty: Intermediate
Candidate-led
Market analysis
Profitability analysis
Case by
PrepLounge
Fire & Water Remediation Services
We are a profitable American provider of fire and water remediation services. We are generally hired by insurance companies to provide cleaning services in the wake of burning and flooding damages. We we would like your counsel on whether to enter the growing USA traditional residential cleaning market or not. Traditional housecleaning usually takes place 2-3 times per month.
4.3
8.5k times solved
Difficulty: Intermediate
Candidate-led
Market analysis
Market entry
Market sizing
New product

Key Takeaways for Your Case Interview Success

Mastering the case interview is a crucial step in securing a consulting job. To perform well, you need to demonstrate structured thinking, analytical skills, and clear communication while solving a real-world business problem.

The interview typically follows a structured flow, starting with an introduction and resume discussion, followed by the case presentation, where you clarify the problem and outline a logical framework. From there, you analyze data, test hypotheses, and apply quantitative skills to arrive at well-supported recommendations. Finally, you summarize your findings and engage in a discussion to defend your approach.

Success in case interviews comes down to practice. Familiarizing yourself with common frameworks is useful, but true preparation involves adapting them to different cases, improving your problem-solving speed, and refining your communication. By structuring your thoughts clearly, staying flexible in your approach, and confidently presenting your findings, you’ll increase your chances of impressing your interviewer and landing an offer at a top consulting firm. 🚀

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