Practice With Over 200 Cases on Various Topics
Learn the case interview basics, practice with 200+ cases, and benefit from extensive test materials, and interactive self-study tools.
Our client is a leading TV/film studio. They are concerned about the part of their business that provides post-production services internally as well as externally.The profits of this division have stagnated in the recent time.Your task is to find ways to increase the profitability of the business.
Our client is a leading TV/film studio. They are concerned about the part of their business that provides post-production services internally as well as externally.The profits of this division have stagnated in the recent time.Your task is to find ways to increase the profitability of the business.
(Open whole case)
22.9k
Times solved
Beginner
Difficulty
Style:
Your client is a large company in the Polish telecommunication sector, providing and maintaining the infrastructure for telephony and ADSL and offering services like phone & internet subscriptions and televison to consumers. As in most countries, the regulator has ruled that new entrants must be
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Your client is a large company in the Polish telecommunication sector, providing and maintaining the infrastructure for telephony and ADSL and offering services like phone & internet sub
...
(Open whole case)
13.6k
Times solved
Intermediate
Difficulty
Your client, ACR, is a chain of medical laboratories. They provide patients with MRI and CT scans as well as other major tests.They have expensive testing equipment in their inventory and run about 250 labs. Usually doctors refer their patients to one of the labs.Because ACR is worried about a decre
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Your client, ACR, is a chain of medical laboratories. They provide patients with MRI and CT scans as well as other major tests.They have expensive testing equipment in their inventory and ru
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(Open whole case)
36.6k
Times solved
Intermediate
Difficulty
Style:
Do you remember that one friend in school that always asked you to help him out with homework? Well, things never change and as this friend learned that you are a consultant now, you receive a call. The friend’s grandfather, who was a captain, passed away and left an oil tanker behind. As your frien
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Do you remember that one friend in school that always asked you to help him out with homework? Well, things never change and as this friend learned that you are a consultant now, you receive
...
(Open whole case)
8.1k
Times solved
Advanced
Difficulty
Style:
We are an airline major operating out of India. We want to increase the number of passengers on all our flights. Could you please calculate the financial return of adding one more passenger per flight?
We are an airline major operating out of India. We want to increase the number of passengers on all our flights. Could you please calculate the financial return of adding one more passenger per flight?
(Open whole case)
17.9k
Times solved
Intermediate
Difficulty
Style:
Dubai Airport has decided to counter the chaos in the airport taxi service by commencing a bidding process to assign airport taxi services to 3 operators only. After years of cheating passengers, black-market drivers and unlicensed cabs, the airport has had enough of the problems and is now taking a
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Dubai Airport has decided to counter the chaos in the airport taxi service by commencing a bidding process to assign airport taxi services to 3 operators only. After years of cheating passen
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(Open whole case)
33.8k
Times solved
Intermediate
Difficulty
Style:
Your client American Airlinks has seen its inflight revenues stagnate for the past 3 years. The CEO offers the possibility of doing a partnership with Balza
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Your client American Airlinks has seen its inflight revenues stagnate for the past 3 years. &n
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(Open whole case)
18.7k
Times solved
Intermediate
Difficulty
Style:
An Argentinian toy manufacturer has 50% market share in Argentina and is the market leader in South America. However, its international market share is only 5%.Their CEO wants you to brainstorm and structure potential ideas to increase the company’s profit margins and market share. The CEO also want
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An Argentinian toy manufacturer has 50% market share in Argentina and is the market leader in South America. However, its international market share is only 5%.Their CEO wants you to brainst
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(Open whole case)
37.5k
Times solved
Advanced
Difficulty
Our client is a consumer packaged goods company looking for top-line growth opportunities. They are considering extending its pre-existing baby products brand (e.g., Huggies) into a new product category – baby clothing.They are looking for this business to generate +$300M revenue per year, begi
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Our client is a consumer packaged goods company looking for top-line growth opportunities. They are considering extending its pre-existing baby products brand (e.g., Huggies) into a new prod
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(Open whole case)
3.9k
Times solved
Intermediate
Difficulty
Expert case by Hagen
Style:
BabyformulaCo is a leading producer of baby formula with a 30% market share in the US that is looking for ways to increase their market share without significantly lowering profitability. Recently, a Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) for low-income women a
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BabyformulaCo is a leading producer of baby formula with a 30% market share in the US that is looking for ways to increase their market share without significantly lowering profitability. Re
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(Open whole case)
17.3k
Times solved
Intermediate
Difficulty
Expert case by Ian
Style:
Our client is Korean Car Parts (KCP), a multi-national original equipment manufacturer (OEM) of car parts based in Korea. They've recently seen a decline in profits and have brought us in to understand how to address this falling profitability.====================================
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Our client is Korean Car Parts (KCP), a multi-national original equipment manufacturer (OEM) of car parts based in Korea. They've recently seen a decline in profits and have b
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(Open whole case)
5.8k
Times solved
Beginner
Difficulty
Expert case by Ian
Style:
Problem definition: Our client is Korean Car Parts (KCP), a multi-national original equipment manufacturer (OEM) of car parts based in Korea. They've recently seen a decline in profits and have brought us in to understand how to address this falling profitability.==========================
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Problem definition: Our client is Korean Car Parts (KCP), a multi-national original equipment manufacturer (OEM) of car parts based in Korea. They've recently seen a decline in pro
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(Open whole case)
11.9k
Times solved
Intermediate
Difficulty
Expert case by Francesco
Style:
Our client today is AirService – a service provider for a number of airlines and airports. Their management recently realized a decrease in profits that is linked to increasing costs.Accordingly, they have engaged our firm to help address this issue. How would you approach this problem?
Our client today is AirService – a service provider for a number of airlines and airports. Their management recently realized a decrease in profits that is linked to increasing costs.Accordingly, they have engaged our firm to help address this issue. How would you approach this problem?
(Open whole case)
8.0k
Times solved
Intermediate
Difficulty
Expert case by Francesco
Style:
Our client is a BlissOttica, an Eyewear Manufacturer that is looking to reach a 10% increase in profits. How would you help our client?
Our client is a BlissOttica, an Eyewear Manufacturer that is looking to reach a 10% increase in profits. How would you help our client?
(Open whole case)
14.3k
Times solved
Intermediate
Difficulty
Expert case by Francesco
Style:
Our client is a large American music company with a 40% market share and $20 billion in revenue. During the last holiday season, the client released fewer new tracks onto music streaming services compared to the year before. We would like you to figure out what could be causing t
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Our client is a large American music company with a 40% market share and $20 billion in revenue. During the last holiday season, the client released fewer new tracks onto musi
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(Open whole case)
6.4k
Times solved
Intermediate
Difficulty
Expert case by Agrim
Style:
Our client is a pharmacy in Dubai - called NewWave Pharmacy. This pharmacy wants to start a new & unique delivery service and want to understand if it is a good idea or not? If yes, then how should they price it? And how should they start it?
Our client is a pharmacy in Dubai - called NewWave Pharmacy. This pharmacy wants to start a new & unique delivery service and want to understand if it is a good idea or not? If yes, then how should they price it? And how should they start it?
(Open whole case)
1.5k
Times solved
Advanced
Difficulty
Expert case by Ian
Style:
Our client is Hunger Warriors, a non-profit with ambitions to solve world hunger. While approximately one tenth of the human population goes to bed hungry, Hunger Warriors aims to bring this number to zero. One of their primary initiatives is to reduce food waste, which represents $1.5 Trillion in l
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Our client is Hunger Warriors, a non-profit with ambitions to solve world hunger. While approximately one tenth of the human population goes to bed hungry, Hunger Warriors aims to bring this
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(Open whole case)
3.3k
Times solved
Intermediate
Difficulty
Style:
If you have ever been in Bangkok, you would have noticed these motorcycles transporting people from A to B as an alternative means of transportation. These motorcycles typically transport people on short distances such as nearby train stations, supermarkets or food stalls.Your job is to estimat
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If you have ever been in Bangkok, you would have noticed these motorcycles transporting people from A to B as an alternative means of transportation. These motorcycles typically transpo
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(Open whole case)
7.6k
Times solved
Beginner
Difficulty
Style:
Your client, Customlope, is the leader in the US secure envelope manufacturing industry. Banks buy these envelopes for operations such as money deposits and high value transactions.Next year, a new digital technology will reduce the overall number of units sold in the industry by 25%.In the short te
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Your client, Customlope, is the leader in the US secure envelope manufacturing industry. Banks buy these envelopes for operations such as money deposits and high value transactions.Next year
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(Open whole case)
58.9k
Times solved
Beginner
Difficulty
Style:
A bank based in a developing country in Africa has hired us to find out how it can grow its local retail banking business unit.What aspects would you investigate?  
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A bank based in a developing country in Africa has hired us to find out how it can grow its local retail banking business unit.What aspects would you investigate? &nb
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(Open whole case)
25.8k
Times solved
Intermediate
Difficulty
Any Open Questions Left? Check Out Our FAQ
What are cases?
Cases, also known as case studies, are business problems that a candidate is presented with during a case interview at a management consultancy. The challenge is to solve it under pressure and in a structured way.
Why are consulting cases so important for your preparation?
Consulting interviews are among the most competitive and difficult job interviews that exist. Interviewers use cases as an indicator to test whether you have what it takes to become a successful consultant. In order to pass, you need to ace the case interview part. And in order to ace the case interview part, you need to be well-prepared. Thus, practicing cases is one of the most important aspects of interview preparation in consulting. During different rounds of interviews you will have to solve cases again and again to prove your structured and analytical thinking as well as your communication skills.
How can I practice cases?
You can practice cases on your own and go through them to get a first feeling for the structure. Afterwards, you should go into a real interview environment and practice cases with other members on the platform. You will find more than 50 mock-interview requests on the Meeting Board every day, which you can easily accept. If there is nothing suitable on the Meeting Board, you can also use the Candidate Listing. Here you can find active members on the platform and send them a direct meeting request. If you want to take your case practice to the next level, we recommend you to schedule coaching sessions with our coaches who have many years of experience in helping candidates receive their dream job offer.
What is the difference between Candidate-led and Interviewer-led?
In an interviewer-led case interview, the interviewer leads through the conversation. This means that the interviewer asks specific questions and also controls the time you have to analyze and answer different questions and therefore the depth of your analysis. In contrast, the candidate-led style (which is more common) is about you taking the initiative as a candidate. The initial problem is given to you by your interviewer. Afterwards, you have the freedom to structure the case according to your ideas and to ask questions proactively in order to find a solution to the problem.
What are real cases?
Real cases in the PrepLounge Case Library are cases that were submitted by management consultancies and have been treated as such within the company. They were made available from the real interview process. In this way, you can gain deep insights into the requirements of the case interview with the respective top consultancies (e.g. Bain & Company, Roland Berger, Deloitte, Oliver Wyman). We have marked these cases with the corresponding company logo.
What are expert cases?
Expert cases were created by our PrepLounge coaches and either contain real problems that the experts have already dealt with in their lives as consultants or cases from actual consulting interviews they took part in. They offer you an optimal preparation through the different subjects, levels of difficulty and styles. And the best thing is: If you have questions about the cases, you can ask them directly to the authors.
What are video case solutions?
Video case solutions are cases in which we provide you with a solution that includes a YouTube video. With this we want to help you to understand case solutions even better.
What does the rating of the cases mean?
Every member has the possibility to rate a case and leave feedback on the case. This gives you the opportunity to call up a ranking and solve the cases that are particularly popular in the community. It also gives us the opportunity to continuously improve our cases in order to provide you with the best possible practice material.
Which are the most interesting cases on PrepLounge?
Which cases are most interesting for you depends on your personal preference and your level of knowledge. If you are just starting with the case interview preparation, beginner cases are probably the most interesting ones for you. You also have the possibility to filter by different categories, such as personal fit, market analysis or brain teaser and many more, in order to address exactly the topics that are most relevant for your application.
Practice Case Interviews - Browse Our Extensive Case Library
Invite other candidates for a meeting to crack the case interactively or solve it on your own. If you like to check your case approach just have a look at the given sample solution.
A Vast Selection of Management Consulting Cases
Our selection of case studies mirror the wide variety in real case interviews. Thus, you can solve challenging problems around market sizing, market-entry, pricing, or operations strategy. Moreover, all provided cases are marked with a level of difficulty and the respective case style. This will allow you to filter for interviewer-led (as used by McKinsey) and candidate-led cases. In addition, some of our corporate partners granted some great original cases that have been used in real interviews. Check them out to get some authentic insights about the real application process of top firms like Bain, Roland Berger, and many more. These cases are clearly indicated by the firm's logo.