MRR / ARR Revenue Forecaster
Project your Monthly and Annual Recurring Revenue over 12-36 months. Model new customer growth, expansion revenue, and churn for accurate forecasting.
Configure Your Inputs
Adjust the values below and see results update instantly
Monthly Recurring Revenue today
Expected new sign-ups monthly
ARPU for new customers
% of MRR lost each month
% MRR growth from upgrades
Projection timeline (1-36)
Your Results
Calculated in real-time based on your inputs above
Projected ARR (12 mo)
$417,240
MRR: $34,770 — 74% growth
End MRR
$34,770
Net New MRR
$14,770
Revenue from New Customers
$18,000
Revenue Lost to Churn
$9,690
Expansion Revenue
$6,460
Net Revenue Retention
98.7%
Estimate Only: These results are approximate calculations based on the values you entered. Actual costs may vary depending on vendor pricing, negotiations, and market conditions.
Pro Tip
Net Revenue Retention (NRR) above 100% means expansion revenue exceeds churn — the hallmark of elite SaaS companies. Top performers maintain 120-140% NRR.
Disclaimer: This calculator provides estimates for informational purposes only. It does not constitute financial, legal, or professional advice. We do not guarantee the accuracy, completeness, or reliability of any calculations. Actual costs and results may differ significantly. Always consult a qualified professional before making financial decisions.
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Why Trust This Calculator
All calculations happen locally in your browser
Based on real-world pricing data and industry benchmarks
Zero sign-up required — completely free
Updated regularly with latest pricing trends
Note: All calculations are estimates only and do not constitute financial advice. Consult a professional before making business decisions.
Frequently Asked Questions
What's the difference between MRR and ARR?
MRR (Monthly Recurring Revenue) is your predictable monthly income from subscriptions. ARR (Annual Recurring Revenue) is simply MRR × 12. ARR is commonly used for valuation and investor reporting.
What's a good MRR growth rate?
For early-stage startups: 15-20% month-over-month. For scaling companies ($1M+ ARR): 10-15% monthly. For mature SaaS ($10M+ ARR): 5-8% monthly. Consistent double-digit growth at scale is exceptional.
How do I calculate Net Revenue Retention (NRR)?
NRR = (Starting MRR + Expansion - Contraction - Churn) / Starting MRR × 100. Above 100% means you grow from existing customers alone. Best-in-class: 120-140%. Below 80% indicates serious retention problems.
What's expansion revenue and why does it matter?
Expansion revenue comes from existing customers: plan upgrades, seat additions, feature upsells. It's the cheapest revenue because there's no acquisition cost. Great SaaS companies generate 20-40% of new revenue from expansion.
How do I model revenue churn vs customer churn?
Customer churn = % of accounts lost. Revenue churn = % of MRR lost. They differ because you may lose many small accounts (high customer churn, low revenue churn) or one whale account (low customer churn, high revenue churn). Track both.