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Finance
Subscription Revenue Calculator
Forecast MRR, ARR, and cumulative revenue month by month.
Inputs
$
%
%
Starting MRR
$5,800
MRR at month 12
$7,227
Ending ARR
$86,724
Total revenue (12 mo)
$78,564
| Month | Customers | MRR | Cumulative revenue |
|---|---|---|---|
| 1 | 204 | $5,907 | $5,907 |
| 2 | 207 | $6,017 | $11,924 |
| 3 | 211 | $6,128 | $18,052 |
| 4 | 215 | $6,241 | $24,293 |
| 5 | 219 | $6,357 | $30,650 |
| 6 | 223 | $6,474 | $37,124 |
| 7 | 227 | $6,594 | $43,718 |
| 8 | 232 | $6,716 | $50,434 |
| 9 | 236 | $6,840 | $57,275 |
| 10 | 240 | $6,967 | $64,241 |
| 11 | 245 | $7,096 | $71,337 |
| 12 | 249 | $7,227 | $78,564 |
About this tool
Model your subscription business over 1–36 months. Enter starting customers, plan price, growth rate, and churn — get a month-by-month projection of customers, MRR, and cumulative revenue.
What it does
- •Monthly cohort table
- •Growth & churn modeling
- •Cumulative revenue
- •Annual/monthly billing
Use cases
- ★SaaS planning
- ★Investor projections
- ★Cash-flow modeling
FAQ
Monthly vs annual billing?
Toggle billing cycle — the tool normalizes annual pricing to monthly for MRR calculations.
Is churn compounded?
Yes. Each month applies growth and churn to the previous month's customer count.