Getting into management consulting in India—whether at McKinsey, BCG, Bain, Deloitte, KPMG, or even boutique Indian firms like Alvarez & Marsal or Praxis—requires mastering the case interview. This is one of the most structured, demanding, and consistently misunderstood interview formats in the Indian job market.
This guide gives you a practitioner’s framework to prepare effectively.
What Is a Case Interview?
A case interview presents you with a real-world business problem and asks you to analyse it live, in conversation with an interviewer. You are expected to:
- Structure your approach clearly before diving in
- Ask smart clarifying questions
- Work through the problem logically and collaboratively
- Arrive at a data-driven recommendation
The case is not a test of whether you get the “right answer.” It is a test of how you think.
Types of Cases You’ll Encounter
| Case Type | Description | Common in |
|---|---|---|
| Profitability | Why is a company’s profit declining? | All consulting firms |
| Market Entry | Should a company enter a new market? | McKinsey, BCG, Bain |
| M&A / Due Diligence | Should a company acquire another? | Big 4, strategy boutiques |
| Operations | How do we cut costs by 20%? | Deloitte, KPMG |
| Pricing | How should we price this product? | All firms |
| Growth Strategy | How do we grow revenue by 30%? | All firms |
Indian-specific cases increasingly involve: digital payments, EdTech, agri-supply chain, affordable housing, and healthcare infrastructure.
The Core Framework: MECE Thinking
The foundation of all case interviews is MECE — Mutually Exclusive, Collectively Exhaustive.
When you structure a problem, your categories should:
- Not overlap (mutually exclusive)
- Cover all possibilities (collectively exhaustive)
Example: If asked “Why is a retail company’s profit declining?”, a MECE structure is:
- Revenue decline (volume × price)
- Cost increase (fixed vs. variable, COGS vs. overheads)
This is cleaner than saying “marketing, operations, and maybe supply chain?”—which overlaps and misses components.
A Step-by-Step Case Interview Approach
Step 1: Clarify (2 minutes)
Before structuring, ask 2-3 questions to understand the problem completely.
“Before I begin, could you tell me—is this company profitable overall, or is this a specific business unit issue? And what’s the timeframe we’re analysing?”
Step 2: Structure (2 minutes)
Lay out your framework before analysing. Say it out loud.
“I’d like to approach this in two parts: first, diagnose whether this is a revenue or cost problem, and within each, identify the specific drivers. Then I’ll recommend solutions once we’ve isolated the cause.”
Step 3: Analyse
Work through each branch with data. Ask for numbers when needed. Do mental maths confidently (round numbers if needed).
Step 4: Synthesise
Summarise your finding clearly and give a recommendation.
“Based on our analysis, the profit decline is primarily driven by a 15% drop in transaction volume in Tier-2 cities, not a pricing or cost issue. I’d recommend investigating the distribution gap in those markets before considering other fixes.”
Common Consulting Frameworks
- Profitability = Revenue − Cost (always the starting point for profit cases)
- Porter’s Five Forces (market attractiveness)
- 4Ps of Marketing (product, price, place, promotion)
- Value Chain Analysis
- 3Cs Framework (Company, Customers, Competitors)
- SWOT (use sparingly—often too broad)
Do not memorise frameworks and apply them robotically. Interviewers at McKinsey India reject candidates who force-fit frameworks without understanding the problem.
How to Practice
- Case in Point (book) — The most widely used prep resource globally
- Victor Cheng’s LOMS — Used by thousands of McKinsey and BCG aspirants
- PrepLounge — Online case partner matching platform; very active in India
- Case practice with peers — IIM and IIT consulting clubs run case prep sessions; join them even without affiliation
- Annual reports as cases — Read a company’s annual report and hypothetically restructure their strategy
India-Specific Tips
- Know Indian business context: Jio, Zomato, Ola, HDFC, Tata Group cases are commonly adapted
- Mental maths matters: India’s population (140 crore), GDP (₹200+ lakh crore), and density data are useful in market sizing
- Personalise your cases: Frame answers using Indian cities, Indian consumer behaviour, and Indian regulatory context
- Speak as you think: Indian candidates often go silent while thinking. Narrate your reasoning out loud throughout.
References
- Case in Point by Marc Cosentino — https://www.caseinterview.com/case_in_point
- PrepLounge India — https://www.preplounge.com
- Victor Cheng LOMS Case Interview Prep — https://www.victorcheng.com/loms
- McKinsey India Careers — https://www.mckinsey.com/in/careers
- ConsultingPrep India Community — https://www.linkedin.com/groups/consulting-case-prep-india/