How to use this calculator
Enter beginning MRR from existing customers only, then add expansion revenue and subtract downgrades and churned MRR.
Do not include revenue from brand-new customers when calculating NRR.
#897 · Startup Tool
Net Revenue Retention Calculator
Calculate Net Revenue Retention for SaaS by combining starting MRR, expansion, downgrades, and churned revenue. This NRR tool shows whether existing customers are growing enough to offset revenue loss.
Calculator
Existing customer revenue movement$
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What the result means
NRR measures how much revenue is retained and expanded from an existing customer base. Above 100% means expansion offsets losses; above 120% is often considered very strong for SaaS.
NRR = (Beginning MRR + Expansion MRR − Downgrade MRR − Churned MRR) ÷ Beginning MRR × 100.
NRR is one of the most important SaaS retention and expansion metrics because it shows growth quality inside the existing customer base.
Example calculation
With $100,000 beginning MRR, $18,000 expansion, $5,000 downgrades, and $6,000 churn, NRR is 107%.
Tips for better results
- Separate expansion, downgrade, and churn sources.
- Improve onboarding and account expansion to increase NRR.
- Track NRR by segment because enterprise and SMB behavior can differ sharply.
FAQ
How do I calculate net revenue retention for SaaS?
Add expansion revenue to beginning MRR, subtract downgrades and churned revenue, then divide by beginning MRR.
What is a good net revenue retention rate for SaaS?
Above 100% means existing customer revenue is growing after losses. Above 120% is often viewed as very strong in B2B SaaS.
Does NRR include new customer revenue?
No. NRR should only include revenue movement from the existing customer base, not brand-new customers.
How do upgrades affect net revenue retention?
Upgrades increase expansion revenue, which raises NRR and can offset downgrades or churn.
Why is my SaaS NRR below 100 percent?
NRR falls below 100% when expansion revenue is not enough to offset downgrades and churned recurring revenue.
Related calculators
NRR metrics
| Metric | Use |
|---|---|
| NRR | Revenue retained plus expanded from existing customers. |
| Expansion | Upgrade or seat growth revenue. |
| Contraction | Downgrades and churned revenue. |
| Growth quality | Whether existing accounts expand after losses. |
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