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Estimate only. Platform fees, taxes and policies vary by country, account, category and date. Verify important decisions against your current statement or official fee schedule.
Marketing calculator
Calculate ending monthly recurring revenue and net new MRR from new, expansion, contraction and churn movements.
Enter your figures
Estimate only. Platform fees, taxes and policies vary by country, account, category and date. Verify important decisions against your current statement or official fee schedule.
Calculator guide
MRR normalizes predictable subscription revenue into a monthly amount. Enter starting MRR, new customers, average revenue per account, expansion revenue, contraction revenue and churned customers for one consistent month.
The calculator adds new and expansion MRR, then subtracts contraction and churned MRR. It reports ending MRR and net new MRR so you can distinguish the final balance from the movement generated during the month.
Exclude one-time implementation, hardware, consulting and usage charges unless your company policy classifies them as recurring. Annual contracts should be normalized to a monthly equivalent rather than recorded entirely in the invoice month.
Reconcile the result with subscription billing data and maintain a written MRR policy for upgrades, downgrades, pauses, credits, currency conversion and delinquent accounts.
Formula
Ending MRR = Starting MRR + New MRR + Expansion MRR − Contraction MRR − Churned MRR
Worked example
Rounded values; replace assumptions in the live calculator.
Frequently asked questions
Verify the time period, population, currency, attribution and revenue or cost definition. Save those assumptions with the report so future comparisons use the same scope.
The arithmetic follows the displayed formula. Accuracy depends on using complete inputs from the same reporting period and applying one consistent definition to customers, revenue and costs.
Yes. Keep every monetary input in the same currency. Ratios and percentages remain comparable, but the calculator does not perform foreign-exchange conversion.
Use the revenue definition that matches your reporting purpose and keep it consistent across periods. Document whether discounts, refunds, credits and taxes are included.
A single month can be distorted by seasonality, annual renewals, campaigns or one-off contracts. Compare a consistent monthly or quarterly series before making a decision.
No. It is an independent planning tool. Reconcile the result with your billing platform, analytics system and financial reporting policies.
No. Calculations run locally in the browser and do not require sending calculator inputs to a server.
Primary sources
Definitions and practical use of recurring-revenue metrics.
Official overview of SaaS performance metrics.
Editorially reviewed: 2026-07-21
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