Recurring Revenue Forecast Calculator
Every fixed acquisition rate has a ceiling.
MRR in 12 months
$90,665
ceiling of $155,000
At a fixed rate of new MRR, the business converges on $155,000 and stops. Growing past a ceiling requires either growing acquisition every month or cutting net churn — and cutting churn raises the ceiling permanently.
How the Recurring Revenue Forecast Calculator works
At a fixed rate of new MRR, a subscription business converges on new-MRR divided by net-churn and stops. Growing past that ceiling requires either growing acquisition every single month or cutting churn — and cutting churn raises the ceiling permanently.
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price — check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
Why does a subscription business have a revenue ceiling?
Because churn scales with the base and acquisition does not. At 6% net churn and £6,200 of new MRR a month, the business converges on about £103,000 MRR.
How do I raise the ceiling?
Reduce net churn or increase expansion. Both act on the denominator, so a small improvement moves the ceiling substantially — halving net churn doubles it.
Does expansion remove the ceiling?
If expansion exceeds churn, yes — the base grows on its own and there is no equilibrium. That is the position every subscription business is trying to reach.
How reliable is this forecast?
It assumes constant churn and constant acquisition, neither of which holds exactly. It is a good structural guide and a poor month-by-month prediction.