Subscription MRR Growth Calculator
Track subscription momentum — net new MRR, month-over-month growth rate and the MRR you would reach in a year at that pace.
How it works
Net new MRR = new MRR − churned MRR · MoM growth% = net new MRR ÷ starting MRR × 100 · 12-month MRR = start × (1 + growth)¹²
Monthly recurring revenue growth is the heartbeat of a subscription business. Net new MRR — new and expansion revenue minus churn — drives the month-over-month growth rate, and small monthly gains compound sharply over a year. The projection assumes the same growth rate persists, so treat it as the trajectory of your current momentum rather than a forecast.
Worked example
Starting at $50,000 MRR, adding $8,000 of new and expansion MRR while losing $3,000 to churn nets $5,000. MRR ends at $55,000, a 10% monthly gain. Held for 12 months, 50,000 × 1.10¹² compounds to about $156,923.
Frequently asked questions
What is net new MRR?
It is the change in recurring revenue for the month: new-customer MRR plus expansion (upgrades) minus churned MRR from cancellations and downgrades. Positive net new MRR means the business is growing on a recurring basis.
Is the 12-month projection a forecast?
No — it simply compounds the current month’s growth rate over a year to show where that pace leads. Real growth rates fluctuate with seasonality, marketing and churn, so use it as a momentum gauge, not a promise.
Why does gross churn matter on its own?
Churn quietly erodes the base you grow from. Even strong new sales can be cancelled out by a high churn rate, so tracking gross MRR churn separately shows how much of your growth effort is spent just replacing lost revenue.
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Educational estimate, not financial advice.