Practice · Breakeven Analysis
Breakeven analysis
Breakeven questions ask: at what point does a business, product, or investment start making money? This is fundamental to profitability cases, pricing decisions, and investment evaluations — all core MBB case types.
Why interviewers test this
Breakeven analysis tests whether you can separate fixed from variable costs and reason about scale. It's the foundation of profitability cases — and profitability is the most common case type at McKinsey, BCG, and Bain.
Worked examples
Fixed costs are €8M. Contribution margin is 40%. What revenue is needed to break even?
Breakeven revenue = Fixed costs / contribution margin = €8M / 0.40 = €20M. At €20M revenue, 40% (€8M) covers fixed costs exactly.
Price per unit: €50. Variable cost: €30. Fixed costs: €2M. Units to break even?
Contribution per unit = €50 - €30 = €20. Breakeven units = €2M / €20 = 100,000 units.
Strategies
Breakeven revenue = Fixed costs / contribution margin percentage.
Breakeven units = Fixed costs / contribution per unit (price minus variable cost).
If the question asks 'how many more units to justify the investment,' it's a breakeven question in disguise.
Always clarify what's fixed vs variable. Rent is fixed. Raw materials are variable. Sales commissions are usually variable.
Difficulty 2-4. Easy: direct formula application. Hard: multi-product with shared fixed costs.
Practice breakeven analysis under pressure
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