Keywords · Finance · Ops · Updated 2026-07-21

What is Rule of 40?

Short answer: A SaaS benchmark stating that a healthy company's growth rate plus profit margin should sum to roughly 40% or more.

Definition

A SaaS benchmark stating that a healthy company's growth rate plus profit margin should sum to roughly 40% or more.

Why it matters for growth

The rule of 40 helps investors and founders judge whether a company is trading growth for efficiency in a reasonable, sustainable way.

Example

A company growing 60% a year with a -20% profit margin still satisfies the rule of 40, since 60 minus 20 equals 40.

FAQ

What is Rule of 40?
A SaaS benchmark stating that a healthy company's growth rate plus profit margin should sum to roughly 40% or more.
Why does Rule of 40 matter for growth?
The rule of 40 helps investors and founders judge whether a company is trading growth for efficiency in a reasonable, sustainable way.
What is an example of Rule of 40?
A company growing 60% a year with a -20% profit margin still satisfies the rule of 40, since 60 minus 20 equals 40.
What is Rule of 40? Definition and growth use · Cofounderbase