Build an MRR goal that accounts for churn

Normalize recurring revenue

Monthly recurring revenue describes contracted recurring revenue normalized to one month. A 1,200 annual subscription contributes 100 MRR in this simplified model. Setup fees and other one-off income are not recurring revenue.

Start with the subscriber target

At 50 average monthly revenue per subscriber, a 10,000 MRR goal requires 200 subscribers. The calculator rounds up when the target does not divide evenly by average revenue.

Replace churn before growing

Starting with 150 subscribers at 5% monthly customer churn leaves an expected 142.5 before new additions. To reach 200, plan for 58 additions. At 200 customers, approximately 10 new customers per month are needed just to replace the expected churn.

Know what this model leaves out

Customer churn counts lost customers. Revenue churn weights the lost recurring revenue. Expansion, downgrades, usage charges and differences in cohort behavior need a richer model. This tool assumes constant ARPU and month-end additions.

Build the month as an opening-to-closing bridge

The simplified relationship is closing subscribers = opening subscribers × (1 − monthly churn) + new subscribers. Churn is applied to the opening base and additions arrive at month end. The fractional 142.5 retained customers in the example is an expected value, not a literal customer count.

With 58 additions the expected closing base is 200.5, producing 10,025 MRR at 50 each. Actual customer counts will be whole numbers and actual cancellations may differ. This explains why a rounded acquisition target can leave the modeled closing result slightly above the goal.

Check whether acquisition sustains the base

At 5% monthly churn, 200 opening subscribers imply ten expected cancellations. Ten new subscribers maintain the expected base; twenty additions would grow it to 210. The same acquisition effort produces less net growth as the installed base becomes larger.

A business adding ten customers every month with constant 5% churn has an equilibrium of 10 / 0.05 = 200 customers in this simplified recurrence. It approaches that level over time rather than immediately reaching it. Do not extrapolate gross additions as if no one leaves.

Keep MRR, invoices and cash separate

An annual customer paying 1,200 upfront can add 100 normalized MRR while delivering 1,200 cash at the start. The cash received and the recurring revenue metric answer different questions. Neither means that 1,200 of spendable profit was earned on that day.

Specify how trials, overdue invoices and paused subscriptions enter your own MRR definition. The calculator does not connect to billing records or enforce an accounting policy. Use one documented rule across periods so a change in classification is not mistaken for customer growth.

Use retention evidence to improve the plan

Track customers by their starting month and compare how many remain after the same elapsed time. New cohorts may behave differently from older ones, and annual renewal cycles can make a smooth monthly churn assumption inaccurate.

For your next planning review, record opening customers, cancellations, additions and average recurring revenue. Reconcile the closing total first. Then test a higher-churn scenario and check the acquisition capacity and cash required. LTV can help interpret retention economics, but it does not replace a dated forecast of receipts and service costs.

Try the numbers yourself

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