Max MRR Calculator
Calculate your growth ceiling
Max MRR = New MRR ÷ Cancellation Rate. See exactly where your revenue will plateau.
The interactive Max MRR calculator runs at launch; the model below explains the method.
Based on "Max MRR" by Jason Cohen, founder of WP Engine.
How it works
Every SaaS company has a revenue ceiling determined by two forces: new MRR (from new customers and upgrades) and cancellation rate (the percentage of existing MRR lost each month).
As MRR grows, the absolute dollars lost to churn increase—even if the rate stays constant. Eventually, churn dollars equal new dollars, and growth stops. That’s your Max MRR.
Halve your cancellation rate → double your ceiling. That’s why retention is the most powerful growth lever in SaaS.