MRR Growth Calculator
Model your Monthly Recurring Revenue (MRR), ARR, net expansion, and churn trajectory with mathematically rigorous subscription formulas.
MRR Waterfall Inputs
Model your monthly recurring subscription growth
Ending MRR = Beginning + New + Expansion - Contraction - Churn
ARR is calculated as Ending MRR × 12. Net New MRR represents genuine monthly momentum.
How to Model Your MRR Waterfall
Track your subscription trajectory by breaking your monthly cash flow into standard SaaS accounting components.
Enter Baseline MRR
Fill in your Beginning MRR from the first day of the calendar or billing cycle.
Add Inflows & Outflows
Input new sales, upgrades (Expansion), downgrades (Contraction), and cancellations (Churn).
Analyze Growth & ARR
Review your Ending MRR, Net New MRR, and copy the formatted summary report for your investors or team.
Discover 100+ indie SaaS products on Makerora
Find implementation-ready tools, indie founder launches, and software alternatives vetted by the builder community.
Submit your SaaS product to Makerora
Get your product in front of hundreds of early adopters, founders, and investors with a permanent DoFollow backlink.
Frequently Asked Questions
MRR is the predictable total revenue your SaaS generates from active subscriptions in a single month. It excludes one-time payments and set-up fees, serving as the North Star health metric for subscription businesses.
More Free Founder & SEO Tools
SaaS Churn Rate Calculator
Measure customer churn, revenue churn, retention rate, and project annual revenue loss.
SaaS Pricing & Profit Calculator
Model your subscription price per user based on operating costs, merchant fees, and desired profit margins.
Churn Reason Analyzer
Analyze customer cancellation surveys and feedback from uploaded CSVs with categorization, percentage distribution, and report exports.