Prep · Bain
Bain case math
Bain case interviews emphasize practical, operational math. Where McKinsey might ask you to size a market, Bain is more likely to ask you to calculate the unit economics of a product line or the breakeven point of a new investment. The math feels closer to real consulting work.
Interview format
Online assessment
Varies by office and level. May include cognitive tests, situational judgment, or case-based assessments.
Case interviews
2-3 rounds. Bain cases are often more structured and interviewer-led than McKinsey. Math tends to be operational — costs, pricing, unit economics.
Experience interview
Behavioral component. Bain values 'results delivery' stories.
What Bain tests in math
Bain's math focuses on operational metrics and actionable analysis. You'll calculate breakeven points, payback periods, and cost-per-unit figures. Bain interviewers want math that leads to a recommendation — not just a number, but 'here's the number, and here's what we should do about it.'
What to practice
Breakeven analysis — Bain's bread and butter. Fixed vs variable costs, contribution margins, volume targets.
Unit economics — CAC, LTV, payback period. Critical for any Bain case involving growth or investment decisions.
Percentage and margin math — Cost reductions, margin improvements, pricing changes and their P&L impact.
Recommendation framing — Practice following every calculation with a clear recommendation: 'Given X, we should Y.'
Insider tip
Bain values precision. While McKinsey might accept a rounded estimate, Bain interviewers often want you to work through the exact math. Practice clean, step-by-step calculations.
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