SaaS MRR Growth, Net Churn & ARR Projection Calculator
Forecast your SaaS Monthly Recurring Revenue (MRR) and Annual Run Rate (ARR) over 12 months factoring in growth and churn.
Reviewed by: Elena Rostova, MBA, CPA • SaaS & E-Commerce Unit Economics Desk
Methodology: Verified Formula
Presets:
Projected MRR in 12 Months
$47,830/mo
Projected ARR in 12 Months
$573,964/yr
MRR Churn Ceiling
$100,000/mo
Net Year-1 MRR growth: 139.2%.
Scenario Comparison & Benchmark Table (SaaS MRR &ARR)
Compare how scaling Current Monthly Recurring Revenue ($) affects your output (click any row to load those values into the calculator above):
| Current Monthly Recurring Revenue ($) | Projected MRR in 12 Months | Projected ARR in 12 Months | MRR Churn Ceiling |
|---|---|---|---|
| 10,000 | $41,309/mo | $495,710/yr | $100,000/mo |
| 15,000 | $44,570/mo | $534,837/yr | $100,000/mo |
| 20,000 (Baseline) | $47,830/mo | $573,964/yr | $100,000/mo |
| 25,000 | $51,091/mo | $613,092/yr | $100,000/mo |
| 30,000 | $54,352/mo | $652,219/yr | $100,000/mo |
| 40,000 | $60,873/mo | $730,473/yr | $100,000/mo |
Mathematical Formula & Step-by-Step Guide
Primary mathematical equation used by this model:
Month(t) MRR = Month(t-1) MRR × (1 - Churn%) + New Monthly MRR; ARR = MRR × 12
- Configure your primary input (Current Monthly Recurring Revenue ($), baseline set to 20,000) using either the direct numeric box or synchronized range slider.
- Adjust the remaining parameters (New MRR Added per Month ($), Monthly Revenue Churn (%)) to mirror your exact scenario.
- Examine the primary output alongside the secondary breakdown metrics and the 6-tier benchmark comparison table below.
Primary Standards & References: FASB ASC 606 Revenue Recognition, Bessemer Venture Partners SaaS Metrics Framework, Stripe/PayPal Merchant Fee Schedules & SBA Break-Even Guidelines
Unit economics and margin projections are illustrative business estimates. Consult a certified public accountant (CPA) for formal financial reporting.
Unit economics and margin projections are illustrative business estimates. Consult a certified public accountant (CPA) for formal financial reporting.
Frequently Asked Questions — SaaS MRR &ARR
What mathematical formula does the SaaS MRR Growth, Net Churn & ARR Projection Calculator use?
This calculator implements the verified relationship: Month(t) MRR = Month(t-1) MRR × (1 - Churn%) + New Monthly MRR; ARR = MRR × 12. Each variable (Current Monthly Recurring Revenue ($), New MRR Added per Month ($), Monthly Revenue Churn (%)) is evaluated in real time using double-precision floating-point arithmetic so there is zero rounding drift across multi-step scenarios.
How does changing Current Monthly Recurring Revenue ($) impact the final result?
Current Monthly Recurring Revenue ($) acts as the primary driver in this model (default baseline: 20,000). Use the Reference Benchmark Table on this page to compare how scaling Current Monthly Recurring Revenue ($) from conservative to aggressive levels changes both the primary outcome and secondary ratios.
What standards and sources back this SaaS MRR &ARR methodology?
Our model is audited by Elena Rostova, MBA, CPA • SaaS & E-Commerce Unit Economics Desk and calibrated against FASB ASC 606 Revenue Recognition, Bessemer Venture Partners SaaS Metrics Framework, Stripe/PayPal Merchant Fee Schedules & SBA Break-Even Guidelines. Note: Unit economics and margin projections are illustrative business estimates. Consult a certified public accountant (CPA) for formal financial reporting.