What is Monthly Recurring Revenue (MRR)?

Monthly Recurring Revenue (MRR) is the total predictable income your business collects every month from its subscriptions. It normalizes every plan — monthly, annual, quarterly — into a single monthly figure so you can see the business's heartbeat month to month.

MRR is the working metric most subscription founders watch daily. Because it updates frequently, it shows the immediate effect of new sign-ups, upgrades, downgrades, and cancellations far faster than annual figures.

The moving parts of MRR

MRR isn't one number but the sum of several forces pushing in different directions. Understanding which part is growing or shrinking tells you what's really happening in the business.

• New MRR: revenue from brand-new customers this month.
• Expansion MRR: extra revenue from existing customers upgrading.
• Churned MRR: revenue lost from cancellations and downgrades.
• Net new MRR = new + expansion − churned.

Why MRR matters for validation

MRR is the fastest feedback loop for whether your subscription product is taking hold. Steady, compounding net new MRR is one of the strongest signals of product-market fit. If MRR stalls because churn cancels out new sales, that's an early warning that customers aren't finding lasting value — a problem to fix before scaling.