Tracks revenue churn at the whole-business level — distinct from a per-customer churn rate, since the customers who leave aren’t always the same size as the customers who stay.
How it works
Net new MRR is new MRR plus expansion MRR minus churned MRR. Adding that to starting MRR gives ending MRR. Dividing churned MRR by starting MRR gives the revenue churn rate for the period.
What this does not include
This is a single-period snapshot — tracking trends over multiple periods (is churn rate improving or worsening month over month) requires running this calculation repeatedly and comparing results, which this calculator doesn’t automate.
How to use this calculator
- Enter starting MRR, new MRR, expansion MRR, and churned MRR for the period.
Frequently asked questions
Why can revenue churn differ from customer-count churn?
Because customers vary in size — losing many small customers can produce low revenue churn, while losing one large customer can produce high revenue churn despite low customer-count churn.
What is expansion MRR?
Additional revenue from existing customers upgrading or buying more — a business can have positive net new MRR even with high churn if expansion revenue more than offsets it.
Can net new MRR be negative?
Yes — if churned MRR exceeds new plus expansion MRR, meaning the business shrank that period, reported here plainly rather than floored at zero.
