SaaS MRR Calculator (Monthly Recurring Revenue and ARR)
Turns your customer count and average revenue per user into monthly recurring revenue, then splits the month's movement into new, churned and expansion revenue and shows the annual run rate.
Enter your numbers
Example: 348
Example: 1499
Example: 27
Example: 11
Example: 8400
Recent
Formula
How the calculation works
Monthly recurring revenue is the base figure founders and investors watch, because it counts only subscription income expected to repeat next month rather than one-off sales.
Splitting the month into new, churned and expansion revenue shows whether growth comes from winning customers or from existing accounts spending more, which carry very different costs.
Multiplying MRR by twelve gives an annual run rate that is a snapshot rather than a forecast, because it assumes the current month repeats even though churn and growth both keep moving.
Common mistakes
- Counting one-time setup or service fees inside MRR, which inflates the figure and makes growth look steadier than it really is.
- Using the plan list price instead of the amount actually collected after discounts, which overstates revenue per user.
When to use it
- Use it when you sell subscriptions and want a quick monthly and annual revenue picture before the accountant closes the books.
- Do not use it for a project business that bills once per job, because there is no recurring base for MRR to measure.
Worked example
With 348 subscribers paying 1499 taka each, MRR is 521652 taka, new MRR is 40473, churned MRR is 16489 and net new MRR is 32384, giving an ARR of 6259824 taka.
Common questions
Does net new MRR include expansion revenue?
Yes, net new MRR adds expansion revenue on top of new MRR and subtracts churned MRR, so it shows the true change in MRR for the month.
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