one-line definition
MRR (Monthly Recurring Revenue) is the predictable revenue a product earns each month from active subscriptions.
formula: MRR = Number of paying customers × Average revenue per customer per month
tl;dr
Treat MRR as a directional signal, not a vanity KPI. It is useful only when paired with context like segment, channel, and cohort.
Simple definition
MRR (Monthly Recurring Revenue) is the total predictable revenue your product earns each month from active subscriptions. It excludes one-time payments, setup fees, and variable usage charges. For solo founders, it is the clearest signal of whether your business is growing, stalling, or shrinking.
How to calculate it
MRR = Number of paying customers × Average revenue per customer per month
If you have tiered pricing, sum the monthly value of each active subscription:
MRR = $29 × 40 customers + $79 × 12 customers = $1,160 + $948 = $2,108/mo
Use the formula consistently and define your data source once. Avoid changing definitions every sprint, because trend quality matters more than precision at this stage.
Example
Imagine a builder tracking MRR each week while shipping one onboarding change. If MRR improves for two consecutive weeks, keep iterating on onboarding. If it drops, inspect the cohort funnel and interview recent users.
Related reading
Related terms
- ARR
- CAC
- LTV
- Churn Rate
FAQ
Why does MRR matter?+
It gives a fast signal about whether your product and distribution system is improving or regressing.
What is the difference between MRR and ARR?+
ARR is simply MRR multiplied by 12. MRR tracks monthly momentum while ARR is used for annual planning and valuation.