Case Interview Hub Blog

Roughly 40% of case interviews are profitability cases. The equation (Profit = Revenue − Cost) is easy. What gets you the offer is tailoring the tree and isolating the real driver. Two former McKinsey interviewers show you how, with a full worked example.

Do you need to master market sizing to get into McKinsey, BCG, or Bain? A rough one, yes. A hundred standalone guesstimates, no. Two former McKinsey interviewers explain the method, walk through a full example, and show why market sizing is rarely a separate question and almost always embedded inside a real case.

Do you need to memorise 20+ case interview frameworks? In short: No, and interviewers spot it instantly. Two former McKinsey interviewers explain the frameworks worth knowing, why memorising them gets you rejected, and the method for building a tailored structure that actually works.