Rule of 40

This problem tests your understanding of a common SaaS benchmark that compares growth and profitability in a single framework. In investment banking interviews, candidates are often expected to explain how recurring revenue growth and margin performance are weighed together, why investors like simple operating metrics for software businesses, and what the rule is trying to say about the tradeoff between scaling quickly and generating profits.

It also checks whether you can think like an interviewer wants, by showing that valuation in SaaS is not driven by growth alone or margin alone, but by the balance between the two. Questions like this are used to see whether you understand how bankers and investors evaluate business quality, especially for high growth companies that may still be losing money while expanding rapidly.