Case interview examples › Profitability

Profitability case interviews

The case type first rounds set most often. Profits have fallen, or sit below where they should be, and you find out why and what to do about it.

How a profitability case runs

The brief is short: a client whose profits have fallen, or a business unit earning less than its peers. The interviewer wants a diagnosis before a cure, so the first half of the case is about locating the problem. Is it revenue or cost? Within that, which product, customer group, channel or cost line moved? Expect an exhibit with a few years of figures and the question “what do you see?”.

Once the problem is located, the case turns to fixes. Good answers size each option, say which comes first and name the main risk. A case that opens on profitability often ends as a pricing, cost or growth question, so keep the structure open enough to follow it there.

A structure to start from

Why has profit fallen?

Make it the client’s tree before you present it. Name their revenue lines and cost lines instead of the generic boxes: a hotel’s volume is rooms times occupancy times nights, and a mining company takes the market price, so its cost branch carries most of the answer. Then say which branch you would test first and why.

The maths it tests

Profit = (price − variable cost) × volume − fixed costs
The equation the whole tree hangs from. Write it with the client’s own numbers early.
Margin moves in percentage points
A margin that falls from 20% to 15% has fallen five points, which is a quarter of the margin.
Break-even volume = fixed costs ÷ contribution per unit
Useful when a fix adds fixed cost and you need to know how much volume it must win back.
Growth compounds
Two years of 10% decline is a 19% fall, not 20%.

Where candidates lose marks

Profitability cases to practise

Other case types

Every case in the library

Loading…