Consulting Consulting
Back to overview

Business Sense

Business sense refers to the ability to quickly grasp economic dynamics and make decisions that are both strategically and commercially sound. In consulting, it’s not enough to repeat theories from your business degree. What matters is a deep understanding of how companies operate, what drives markets, and what different stakeholders are aiming to achieve.

Consultants with strong business acumen can quickly adapt to new industries, understand client needs, and set priorities that make economic sense. They don’t just ask, “What is analytically correct?” – they also ask, “What truly benefits the company?” This mindset often makes the difference in a case interview.
 

 

Why Your Business Sense Matters in Consulting

As a consultant, you’re expected not only to analyze complex problems but also to think in a solution-oriented and entrepreneurial way. A strong business mindset helps you put analyses into context, assess actions realistically, and focus on generating maximum client value.

In day-to-day consulting, you're working under pressure, collaborating with decision-makers, and constantly weighing trade-offs. Those who think commercially and can strategically prioritize have a clear edge.

In a case interview, showing that you understand markets and business models is key – it sets you apart and proves your readiness for the job.

👉 In our Case Library, you can prepare effectively with curated practice cases and put your business sense to the test.

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
5.2k times solved
Difficulty: Intermediate
Interviewer-led
Operations strategy
Restructuring
Company case provided by Company case by
EY-Parthenon
EY-Parthenon Case: Virtual Marketplace
A leading online real estate marketplace in Germany – your-new-home.com – is struggling with stagnating sales after many years of high growth rates. In a preliminary project with EY-Parthenon, the market environment has already been examined in detail – competitors, new entrants, customer needs, etc. As a result, you are asked to identify growth areas and quantify the potential sales uplift for the management.
4.3
85.5k times solved
Difficulty: Intermediate
Candidate-led
Growth strategy
Profitability analysis
Company case provided by Company case by
Deloitte
Deloitte Case: Footloose
Duraflex is a German footwear company with annual men’s footwear sales of approximately €1 b. They have always relied on the boot market for the majority of their volume. In this market they compete with three other major competitors. In the fall of 2019, Badger – one of Duraflex’s competitiors – launched a new line of aggressively priced work boots. The strong success of this line has caused Duraflex’s management to re-evaluate their position in work boots. With limited additional resources, the management must now decide if they should focus their efforts on competing with Badger in the work boot sector, or allocate their resources on further strengthening their position with casual boots. The management team approached you and asked for your advice. In order to advise them on their future work boot strategy please prepare first some insights regarding market size and competitive landscape.
4.4
102.8k times solved
Difficulty: Intermediate
Candidate-led
Competitive response
Market 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.
3.0
12.8k times solved
Difficulty: Intermediate
Interviewer-led
Operations strategy
Profitability analysis
Company case provided by Company case by
FTI-Andersch AG
FTI-Andersch AG Case: Turnaround – Global Plastics AG
Sie wurden vom Vorstand der Global Plastics AG beauftragt, die wirtschaftliche Performance der Unternehmens-Gruppe im Rahmen eines Independent Business Review (IBR) zu analysieren und das Management zu beraten. Das Unternehmen ist seit dem 1. Januar 2019 durch eine Kontokorrentlinie i.H.v. € 150,0 Mio. finanziert. Darüber hinaus gibt es keine weiteren Verbindlichkeiten gegenüber Kreditinstituten. Das finanzierende Bankenkonsortium hat aufgrund schlechter Quartalszahlen und einer angespannten Marktlage eine Validierung der Mittelfristplanung angefordert. Die Global Plastics AG produziert weltweit in 5 Werken Kunststoffbauteile für Fahrzeuginnenräume in den Anwendungsbereichen PKW (PT-Segment), LKW (CT-Segment) sowie Land- (AG-Segment) und Baumaschinen (CON-Segment). Global Plastics beliefert primär deutsche Premium-OEMs und gilt als Qualitätsführer im Interior-Markt. Das Unternehmen nutzt dabei patentierte Technologien in den Bereichen Spritzguss, Kunststoffgalvanik sowie Heißprägung. Der Interior-Markt ist zunehmend von einem Preisdruck durch asiatische Wettbewerber geprägt, die den Qualitätsansprüchen europäischer Kunden immer besser entsprechen. Die Global Plastics AG hat Ihnen zur Analyse ihre GuV und Bilanz zur Verfügung gestellt. Dort sind die Ergebnisse der Geschäftsjahre 2019 bis 2021 sowie der Forecast des Geschäftsjahres 2022 enthalten. Bitte lösen Sie die unten aufgeführten Aufgaben.
4.6
3.8k times solved
Difficulty: Beginner
Candidate-led
Restructuring
Case by
PrepLounge
SuperBurger
Our client is SuperBurger, a fast food chain that operates in the same class as McDonalds, Wendy's, Burger King and so on. They're the fourth largest fast food chain worldwide in terms of number of stores in operations. SuperBurger owns some of its stores, but 85% of its stores are owned by franchisees. As part of its growth strategy, the company has analyzed some potential acquisition targets including Tasty Donuts which is a growing doughnut producer active in the US and internationally. The client asked us to help him decide whether he should acquire the company or not.
4.5
16.6k times solved
Difficulty: Advanced
Interviewer-led
Mergers & Acquisition
Case by
PrepLounge
GamingHub
Our client, GamingHub, is a large diversified entertainment corporation that received a request to approve a $200 m capital allocation from its video game manufacturing division. The division wants to triple the capacity. The client hired us to help him decide if he should approve this capital request and have asked you what critical issues are to be looked into to decide if the division's market is attractive enough to expand.
4.2
11.1k times solved
Difficulty: Intermediate
Candidate-led
Growth strategy
Market analysis
Company case provided by Company case by
Oliver Wyman
Oliver Wyman Case: On the Right Track
TrainCo is a manufacturer of rolling stock, or trains, with production sites in three European countries. The company has seen declining profitability over the past years; however, they are currently in a very good position to bid for and win a big contract for regional trains for a Swiss national rail company. They have asked you advise to them on whether they should place a bid for the contract.
4.4
92.8k times solved
Difficulty: Beginner
Candidate-led
Operations strategy
Profitability analysis
Company case provided by Company case by
SET Management Consulting
SET Case: Strategische Neuausrichtung der Fröhlich Maschinen GmbH
Die Fröhlich Maschinen GmbH, ein mittelständisches Unternehmen mit Sitz in Deutschland, ist auf die Produktion von Spezialmaschinen für die Automobilindustrie spezialisiert. Das Unternehmen hat in den letzten fünf Jahren seinen Umsatz kontinuierlich gesteigert, jedoch ist die Profitabilität stark zurückgegangen. Die Gewinnmarge vor Steuern liegt bei nur 3,75 %, was deutlich unter dem Branchendurchschnitt von 8 % liegt. Gleichzeitig steht das Unternehmen vor internen und externen Herausforderungen: - Interne Herausforderungen: Ein veraltetes ERP-System führt zu ineffizienten Prozessen in der Produktion und Verwaltung. Zudem gibt es Hinweise auf eine unvorteilhafte Kostenstruktur und mangelnde Transparenz bei der Produktprofitabilität. - Externe Herausforderungen: Steigende Rohstoffpreise und ein intensiverer Wettbewerb setzen die Margen zusätzlich unter Druck. Einige Wettbewerber bieten ähnliche Produkte zu niedrigeren Preisen an und diversifizieren schneller in neue Branchen. Die Geschäftsführung hat Ihre Boutique-Beratung beauftragt, die Ursachen für die sinkende Profitabilität zu analysieren und konkrete Maßnahmen zur Verbesserung der Wettbewerbsfähigkeit vorzuschlagen. Ziel Analysieren Sie die Ursachen für die sinkende Profitabilität der Fröhlich Maschinen GmbH und entwickeln Sie konkrete Maßnahmen, um die Rentabilität und Effizienz langfristig zu steigern.
4.4
2.2k times solved
Difficulty: Intermediate
Interviewer-led
Restructuring
Case by
PrepLounge
Was machen wir mit der Datenflut?
Dein Kunde ist ein großer Automobilkonzern. Dieser erhält eine große Menge an Daten von den verkauften Autos. Er möchte von Dir wissen, welche Möglichkeiten er hat, diese Daten zu monetarisieren.
4.3
4.0k times solved
Difficulty: Intermediate
Interviewer-led
New product
Operations strategy
Profitability analysis
Expert case by
Ian
MBB - Climate Change Operations - Part 2
Note: If you have not already done so, first work through the 1st part of this case: https://www.preplounge.com/en/management-consulting-cases/candidate-led-usual-style/intermediate/mbb-climate-change-operations-285 This case is designed to show you how a case can evolve/change based on new information. The first half of this case is the same, but diverges once data and $s are provided. Prompt A mid-sized manufacturing company is concerned about the potential impacts of climate change on its operations. The company has a number of factories located in coastal regions that are vulnerable to flooding and other weather-related events, and it is concerned about the potential financial and reputational risks associated with these events. The company's leadership team has asked your consulting firm to help them understand the risks they face and develop a plan to mitigate those risks. Clarifying Information - Our client’s objective is to maintain long-term profitability - Our client’s factories are located throughout the US
5.0
1.6k times solved
Difficulty: Intermediate
Candidate-led
Capacity change
Market analysis
Operations strategy
Restructuring
Sustainability
Expert case by
Francesco
Bain Final Round Case - Streaming Services [NEW]
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 this and possible solutions to the problem.
4.7
9.0k times solved
Difficulty: Intermediate
Candidate-led
Capacity change
Operations strategy
Company case provided by Company case by
BCG Platinion
BCG Platinion Case: Digital transformation of an entire corporation
The CIO of a major insurance company needs your support to renew the company's IT landscape as a starting point for their digital transformation. The IT landscape of the client is highly fragmented and integrated. Most IT applications are "legacy" monolithic custom developments (running on Mainframe) and are hosted on-premise. There are issues with stability and scalability of applications plus IT costs are ever increasing "Time-to-market" to release new functionalities is too high, due to constraints of current architecture. You are asked to quickly assess the status quo, identify main areas of intervention and measures to address the pain points and renew the IT landscape. Note: This case is interviewer-led. The cases in our interviews are more candidate-led. In this case, you take the lead and manage the entire case from start to finish. So be prepared for this when you apply to us.
3.9
27.1k times solved
Difficulty: Advanced
Interviewer-led
Digital transformation
Market analysis
Operations strategy
Expert case by
Alberto
MBB Second Round - TitanTrail - "Made in the USA" Operations Outsourcing
TitanTrail is a backpack maker that prides itself on quality and a “Made in the USA” promise. But the landscape is shifting. New competitors are entering the market, and labor costs are climbing. To stay competitive, TitanTrail is exploring a big move: outsourcing production to Cambodia. This decision isn’t simple. It raises critical questions.
5.0
1.6k times solved
Difficulty: Advanced
Candidate-led
Operations strategy
Profitability analysis
Company case provided by Company case by
Mercedes-Benz Management Consulting
MBMC Case: AMG | Turning the most affluent prospects into loyal clients
Mercedes‑AMG stands for uncompromising performance, engineering excellence, and emotional driving experiences. Yet recently, AMG’s top management has become concerned that while the product itself continues to exceed customer expectations, the moment of purchase no longer does. The trigger for this case was a concrete incident: a highly affluent customer configured an AMG top‑end vehicle in detail, was technically convinced, but ultimately decided against the purchase, stating: “It’s a fantastic car – but it didn’t feel special.” For the CEO of Mercedes‑AMG, this statement raises a critical question. In the luxury and performance segment, emotional differentiation at the point of decision is as important as horsepower or technology. Against this backdrop, AMG is exploring new ways to elevate the buying experience for its most valuable customers. One idea under discussion is the introduction of AMG Individualization Hubs – exclusive physical spaces where customers would finalize their vehicle together with AMG experts in a highly personalized and immersive setting. The management now asks you and your Consulting Team to assess this idea holistically: How can AMG strengthen emotional differentiation during the purchase decision, and do Individualization Hubs represent a strategically sound and economically viable solution? The objective is to develop a clear recommendation that balances brand impact, customer experience, and profitability.
4.8
16.4k times solved
Difficulty: Intermediate
Interviewer-led
Growth strategy
New product
Profitability analysis
Expert case by
Ian
MBB - Sky China
Sky China, a government-backed Chinese airline, has recently seen profits plummet due to COVID-19. Profits are down 80% in the months of February and March, but are showing early signs of a rebound in April. They've brought you in to first investigate what can be done immediatedly to prevent hemorrhaging cash and surive in the short-term. They are also looking to see how the current situation can be viewed as an opportunity, and what can be done to prepare for the future.
4.3
8.5k times solved
Difficulty: Intermediate
Candidate-led
Capacity change
Competitive response
Growth strategy
Operations strategy
Organizational behavior
Profitability analysis
Public sector
Expert case by
Margot
EV Strategy for a Leading Luxury Automotive OEM
Your client is a leading luxury automotive OEM. The company has recently launched its first fully electric flagship vehicle, internally called Project Aurora. The model is priced in the ultra-luxury segment and represents a major departure from the company’s traditional portfolio. - It is the brand’s first five-seater vehicle. - It emphasizes comfort, practicality and daily usability more than track-oriented performance. - It features a futuristic aerodynamic design that differs strongly from the brand’s traditional styling language. - It uses software and acoustic engineering to recreate some of the emotional cues that customers associate with combustion-engine vehicles. Initial reactions have been polarized. Some analysts believe the company is modernizing its brand and preparing for the future of luxury mobility. Others argue that Project Aurora risks damaging the company’s iconic identity and alienating core customers. After the unveiling, investor reaction was negative. The client has hired your consulting team to answer one key question: What should the company’s EV strategy be over the next five years?
4.0
1.2k times solved
Difficulty: Advanced
Candidate-led
Growth strategy
Market entry
New product
Pricing
Profitability analysis
Case by
PrepLounge
Recruitment of Junior Attorneys
We are a reputed law firm. We are thinking of hiring associates right out of college at $120,000 per year. Do you think it is a good idea?
4.0
5.7k times solved
Difficulty: Beginner
Candidate-led
Profitability analysis
Company case provided by Company case by
E.ON Inhouse Consulting
E.ON Inhouse Consulting Case: E-Mobility
Climate change has become one of the biggest challenges in the 21st century, and with roughly 75% of all CO₂ emissions coming from energy, this sector plays a key role in the transition to a reduced carbon footprint. E.ON has taken up on the challenge to promote more sustainable and efficient energy solutions throughout its whole customer spectrum. Correspondingly, a shift towards more sustainable energy consumption is noticed across the globe with many cities having set themselves ambitious climate targets, among those are: - Copenhagen -100% CO₂ emissions by 2025 - Amsterdam -60% CO₂ emission by 2030 - New York -40% CO₂ emissions by 2030 With E.ON focusing entirely on the “new” energy world, we have become the partner of choice for solutions propelling the energy transitions. Mr. Jensen, the mayor of Essen has come to E.ON requesting our help to accelerate the transition for his city. Essen is a city with about 600,000 inhabitants and prides itself as a forward-thinking one with lots of ambitions to become green itself. The economy is well and with his freshly won election the mayor looks forward to put its promised big initiatives into real projects.
3.6
15.7k times solved
Difficulty: Intermediate
Interviewer-led
Market analysis
Market entry
Market sizing
Profitability analysis
Case by
PrepLounge
The Madhouse Animation Crisis
Your client is Madhouse Studios, one of the largest anime producers in Japan. The anime-industry is flourishing. Originally revenue was generated mainly in Japan but the trend is that revenues outside of Japan are growing at a steady rate of 15% a year as more and more non-Japanese people enjoy anime. Despite this rapidly growing new segment, Madhouse lost $6m in profits at the end of 2017 even though profits were growing steadily the years before. Madhouse has given you the objective to find the root cause of the loss in profitability and to advise them on how to proceed from here.
4.2
6.9k times solved
Difficulty: Advanced
Candidate-led
Competitive response
New product
Profitability analysis

How Business Sense Shows Up in Case Interviews

Your business sense won’t be tested directly – but it shows up in your thinking, your assumptions, and your recommendations. Here are five moments when it really counts:

5 tips on how to show business sense in case interviews

1. Define a clear objective.

Clarify what the company wants to achieve in the case. Is it short-term profit, long-term growth, or a stronger market position? A well-defined goal aligns your analysis and recommendations – and shows you understand the business context.

2. Develop sound hypotheses.

Top candidates derive economically plausible hypotheses. If revenue is dropping, explore potential causes like demandpricing, or competitive pressure.

3. Evaluate actions realistically.

Go beyond theory. Consider real-world feasibility, conflicting objectives, and strategic risks. Instead of simply saying “raise prices,” consider price elasticity, customer segments, and likely competitor reactions.

4. Interpret numbers in the right context.

Numbers only make sense when interpreted correctly. High margins might signal a premium position – or upcoming competitive threatsBusiness sense means understanding what the numbers imply in context.

5. Make a well-founded recommendation.

Your final recommendation should be logical and economically viable. Acknowledge risks or gaps, and show that your solution could succeed in the real world.
 

How to Train Your Business Sense

Business sense isn’t innate – it’s a skill you can develop. The key is to build a solid understanding of economic principles and learn how real-world decisions are made.

Start by regularly reading business news. Outlets like New York Times, the Wall Street Journal or the Financial Times will help you get a feel for marketsbusiness models, and strategic thinking. Go beyond the facts – try to understand the economic rationale behind each story.

When practicing case interviews, stay sharp and reflective. Ask yourself: Is my reasoning not only logical but also economically sound?

Mock interviews with peers are especially helpful. You’ll improve your communication skills and receive valuable feedback.

👉 Use our Meeting Board to find peers and practice together.

Sep 21
02:30 - 04:00 PM
Pro
100% Reliability
English
Novice, Advanced, Pro
Sep 21
08:00 - 09:30 PM
Advanced
100% Reliability
English, German
Advanced, Pro
Sep 21
11:00 PM - 12:30 AM
Advanced
Reliability: N/A
English, Spanish
Novice, Advanced, Pro
Sep 22
01:00 - 02:30 AM
Pro
100% Reliability
English
Advanced, Pro
Sep 22
06:00 - 07:30 AM
Advanced
100% Reliability
English, Greek
Novice, Advanced, Pro
Sep 22
08:00 - 09:30 AM
Novice
Reliability: N/A
English
Novice, Advanced, Pro
Sep 22
10:00 - 11:30 AM
Pro
94% Reliability
English
Advanced, Pro
Sep 22
10:00 - 11:30 AM
Novice
Reliability: N/A
English, Italian
Novice, Advanced, Pro
Sep 22
08:00 - 09:30 PM
Advanced
68% Reliability
English
Advanced, Pro
Sep 23
12:30 - 02:00 AM
Advanced
100% Reliability
English
Advanced, Pro
You did not find the right meeting?
Find more meeting invitations on our meeting board and post your own suggestion.

👉  Want to take it a step further? Connect with our experienced coaches.

Coach Allen intro video. Visit their profile to find more information in text.
Allen
USD 299 / h
5.0
219 Coachings
Ex-McK Experienced Hire and EM - I show you how to perform at your best
Coach Marco intro video. Visit their profile to find more information in text.
Marco
USD 149 / h
5.0
43 Coachings
MBA | Product expert for Tech companies: fintech, marketplace, logistics | Former Strategy& and KPMG Advisory
Coach Zoe intro video. Visit their profile to find more information in text.
Zoe
USD 149 / h
0.0
0 Coachings
Former BCG Associate | 50% off first case interview prep diagnostic call
Coach Agrim intro video. Visit their profile to find more information in text.
Agrim
USD 329 / h
5.0
543 Coachings
ELITE Prep | BCG Dubai Project Leader | Top Coach | 3hrs Case Mastery | 10y+ Consulting | Free Counselling
Coach Riccardo intro video. Visit their profile to find more information in text.
Riccardo
USD 189 / h
5.0
431 Coachings
FREE 15min call | #1 Bain Coach |12y+ experience helping candidates securing MBB offers| Tailored prep | 5 stars reviews
Coach Irene intro video. Visit their profile to find more information in text.
Irene
USD 149 / h
5.0
9 Coachings
BCG consultant & MIT MBA | Supported 20+ students for MBBs or MBA
Coach Gaurav intro video. Visit their profile to find more information in text.
Gaurav
USD 309 / h
5.0
220 Coachings
Middle East Expert| Free Diagnostic| Ex-McKinsey | 1,000+ MBB Offers (55+ Offices)
Coach Moritz intro video. Visit their profile to find more information in text.
Moritz
USD 249 / h
5.0
264 Coachings
Ex-McKinsey Interviewer | Deep McKinsey expertise with engaging prep that turns nerves into confidence and into offers
Coach Annika intro video. Visit their profile to find more information in text.
Annika
USD 179 / h
5.0
64 Coachings
10% off first session | ex-Bain | MBB Coach | ICF Coach | HEC Paris MBA | 13+ years experience
Coach Giulia intro video. Visit their profile to find more information in text.
Giulia
USD 189 / h
5.0
91 Coachings
McKinsey | 6+ years in Consulting + Health Tech |Certified High Performance + Systemic Coach | Women Empowerment

Also, think like an entrepreneur in daily life. Observe companies, analyze new strategies, and reflect on what drives success or failure. The more often you go through this process, the sharper your business intuition becomes – and that’s what sets you apart in interviews.
 

Key Takeaways

Business sense is one of the most important success factors in both consulting and case interviews. It reflects your ability to quickly recognize economic patterns, form sound assumptions, and make realistic, client-oriented decisions. In interviews, what sets top candidates apart isn’t memorized theory but the ability to see the bigger picture: understanding what really matters to a business, prioritizing strategically, and proposing solutions that are both practical and value-driven.

To demonstrate your business sense, it’s crucial to clearly define the objective of the case, develop plausible hypotheses, assess potential actions not only analytically but also from a business standpoint, and interpret numbers within the correct context. Your final recommendation should be not just logical, but economically viable and well thought through.

The good news is that business sense can be learned. By regularly reading business news, reflecting on strategic decisions, working through case interviews critically, and actively seeking feedback, you’ll build a strong foundation in economic thinking. Over time, this mindset will not only boost your interview performance but also set you up for long-term success in consulting.

Let's Move On With the Next Articles:

Presentation and Communication
Consulting Skills & Preparation
The majority and the most obvious part of preparation is, of course, the substantive preparation for your case interview. However, you also need to present what you have learned in a way that gives your interviewer an impression of your personality and character. This means that you must appear confidentand communicate clearly and precisely. The best preparation is useless if you come across as closed-off and insecure. As a consultant, you must always appear trustworthy and confident when interacting with clients to be taken seriously and to enable you and your team to work in a solution-oriented manner. This is already tested in the case interview – albeit indirectly ;)
To the article
General Knowledge
Consulting Skills & Preparation
In case interviews, having solid general knowledge can make a big difference, especially in market sizing questions. Knowing basic facts about regions, population sizes, and economic indicators helps you build stronger arguments. It’s not just about the analysis itself but also about showing interviewers that you understand global trends and can quickly process key information — an important skill in consulting. In a case interview, quick and accurate estimates are essential. For example, if you're asked to evaluate the potential market for a product in a specific country, having solid data — like the population size — is crucial. Without this information, it can be challenging to make a meaningful calculation. In addition to national market data, it's important to know about key global markets. Being familiar with major economic regions like the U.S., China, and the EU is valuable because large consulting firms such as McKinsey and BCG operate extensively in these areas. A solid understanding of these regions shows that you can think about global factors and helps you stand out from other candidates. What Your Knowledge of Population, Economy & Geography Says About You Having strong general knowledge in specific areas not only shows that you are well-prepared, but also that you can quickly understand economic relationships—a crucial skill in consulting. When you have information like population sizes or a country's Gross Domestic Product (GDP) at your fingertips, you can quickly verify assumptions and make informed decisions, which is exactly what case interviews expect. Additionally, your knowledge of these topics demonstrates a genuine interest in world affairs and your ability to recognize and understand global trends. This insight is vital for evaluating how political, economic, and social changes affect businesses. It also highlights your capability to absorb and use complex data effectively. Population Country/Region Population (approx.) Worldwide 8.05 billion China 1.426 billion India 1.419 billion Europe (EU states) 450 million USA 335 million Indonesia 277 million Brazil 203 million Russia 143 million Japan 124 million Germany 83 million UK 68 million GDP Forecast in USD for 2024 Country/Region GDP 2024 (approx. in trillions USD) Worldwide 105 trillion USD USA 25 trillion USD China 18 trillion USD Japan 4.3 trillion USD Germany 4.5 trillion USD France 3.0 trillion USD UK 3.1 trillion USD India 3.9 trillion USD Italy 2.2 trillion USD Brazil 2.1 trillion USD Canada 2.2 trillion USD Key Data to Know for Your Case Interview In case interviews, making quick and accurate estimates is key. A good grasp of units, along with basic fraction and percentage calculations, is essential for working efficiently. Additionally, being comfortable with time units is important for making rough estimates and calculations. The table of larger and smaller time units below provides a handy overview of commonly needed values. These fundamental skills help you tackle tasks confidently and quickly. Overview of Time Conversions: Days, Weeks and Hours Larger Units Smaller Units Days/Year 365 days (In leap years: 366 days) Days/3 Years 1,095 days Days/4 Years 1,461 days (including 1 leap year) Weeks/Year 52 weeks Hours/Week 168 hours Seconds/Hour 3,600 seconds Conversion of Fractions to Percentages and Decimal Values Fraction Percentage Decimal 1/5 20% 0.20 1/6 16.67% 0.1667 1/7 14.29% 0.1429 1/8 12.5% 0.125 1/9 11.11% 0.1111 1/10 10% 0.10 1/11 9.09% 0.0909 1/12 8.33% 0.0833 1/13 7.69% 0.0769 1/14 7.14% 0.0714 1/15 6.67% 0.0667 1/16 6.25% 0.0625 1/17 5.88% 0.0588 1/18 5.56% 0.0556 1/19 5.26% 0.0526 1/20 5% 0.05 Remember, it’s not enough to just memorize these numbers—you also need to be able to calculate with them effectively! Use our Mental Math Tool to specifically train your math skills and prepare for your next interview.
To the article
Preparation Plan
Consulting Skills & Preparation
Preparing for a case interview can feel overwhelming, but having a structured plan will help you stay focused and make steady progress. A well-organized approach ensures you build a strong foundation, practice effectively, and refine your skills before the big day. In this guide, we will walk you through the key components of an effective practice plan, including self-study, peer practice, and working with a coach. Let’s go!
To the article