Net Revenue Retention Calculator
Enter starting MRR, expansion MRR from upgrades and add-ons, downgrade MRR, churned MRR, contraction MRR for seat reductions, and reactivation MRR from returning customers. See retained MRR, net retained, NRR %, gross retention %, NRR tier, implied annual NRR, and growth from existing customers only. The clearest view of whether your base is expanding or leaking.
Instant calculations · Editable fee assumptions · Export-ready results
Inputs
Values update results instantly. Adjust fee assumptions to match your seller dashboard.
Starting
MRR at start of period
This month
Upgrades, add-ons, cross-sells
Lost from downgrades
Lost from churned customers
Seat reductions, plan downgrades if separate
Previously churned customers returning
Results
Live estimates based on your inputs and editable fee assumptions.
Starting MRR
$50,000.00
Period start base.
Expansion MRR
$4,000.00
Upgrades and add-ons.
Total contraction + churn
$4,000.00
Downgrade + churn + contraction.
Retained MRR (gross)
$46,000.00
Starting minus downward without expansion.
Net retained MRR
$50,500.00
Retained + expansion + reactivation.
Net Revenue Retention %
101.0%
(Net retained / starting)×100.
Gross retention %
92.0%
(Retained / starting)×100 no expansion.
NRR tier
healthy (growing)
Best in class, healthy, okay, needs work.
Implied annual NRR %
112.7%
Monthly NRR ^12 approximation.
Revenue growth from existing %
1.0%
NRR −100%.
What this means
Starting $50000. Downward $4000 (downgrade $1500 + churn $2500 + contraction $0). Retained gross $46000 (92.0%). +$4000 expansion +$500 reactivation = $50500 net. NRR 101.0% healthy (growing). Annual implied 112.7%. Existing growth +1.0%.
MRR waterfall from starting to ending
Interactive breakdown of fees, costs, and remaining profit.
Distribution
- Starting MRR$50,000.0085.5%
- Expansion + reactivation$4,500.007.7%
- Downgrade + contraction$1,500.002.6%
- Churned$2,500.004.3%
Total $58,500.00 · 4 segments · interactive
Line-item breakdown
Dollar amounts, share of revenue, and visual proportion.
- Starting MRR
- $50,000.00
- Expansion MRR
- $4,000.00
- Reactivation MRR
- $500.00
- Downgrade MRR
- $1,500.00
- Contraction MRR
- $0.00
- Churned MRR
- $2,500.00
- Total downward
- $4,000.00
- Retained gross
- $46,000.00
- Net retained
- $50,500.00
- NRR %
- 101.0%
- Gross retention %
- 92.0%
- Implied annual NRR
- 112.7%
Assumptions used
- • Downward $4000.00 = $1500.00+$2500.00+$0.00
- • Retained $46000.00 = $50000.00−$4000.00
- • Net $50500.00 = $46000.00+$4000.00+$500.00
- • NRR 101.0% = 50500.00/50000.00
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Net Revenue Retention Calculator
Generated 8/4/2026, 2:52:38 PM · Currency USD
Inputs
- Starting MRR: 50000
- Expansion MRR this month: 4000
- Downgrade MRR: 1500
- Churned MRR: 2500
- Contraction MRR (seats/bandwidth): 0
- Reactivation MRR: 500
Results
- Starting MRR: $50,000.00
- Expansion MRR: $4,000.00
- Reactivation MRR: $500.00
- Downgrade MRR: $1,500.00
- Contraction MRR: $0.00
- Churned MRR: $2,500.00
- Total downward: $4,000.00
- Retained gross: $46,000.00
- Net retained: $50,500.00
- NRR %: 101.0%
- Gross retention %: 92.0%
- Implied annual NRR: 112.7%
Interpretation
Starting $50000. Downward $4000 (downgrade $1500 + churn $2500 + contraction $0). Retained gross $46000 (92.0%). +$4000 expansion +$500 reactivation = $50500 net. NRR 101.0% healthy (growing). Annual implied 112.7%. Existing growth +1.0%.
How it works
Methodology & formulas
This calculator is transparent by design. Review the steps and formulas so you can trust the estimate and adjust assumptions when your dashboard differs.
Calculation steps
- 1Sum all downward movements for total contraction.
- 2Subtract from starting for retained gross.
- 3Add expansion and reactivation for net retained ending of existing cohort.
- 4Divide by starting for NRR percentage.
- 5Compute gross retention without expansion to isolate pure churn.
- 6Exponentiate monthly NRR over 12 months for annual implied and bucket tier.
Formulas
- downward = downgrade + churned + contraction
- retained = starting − downward
- netRetained = retained + expansion + reactivation
- NRR = netRetained / starting ×100
- grossRetention = retained / starting ×100
- impliedAnnual = (NRR/100)^12 ×100
- growthExisting = NRR −100
Important assumptions
- Total downward = downgrade + churned + contraction.
- Retained MRR = starting − total downward.
- Net retained = retained + expansion + reactivation.
- NRR = (netRetained / starting) ×100.
- Gross retention = (retained / starting) ×100 (no expansion, no reactivation).
- Implied annual NRR = NRRMonthly^12 approximated as (NRR/100)^12 ×100, clamped realistic.
- Growth from existing = NRR −100%.
- NRR tier: >=120 best in class, >=100 healthy growing, >=90 okay, <90 needs work.
Worked example
$50K starting, $4K expansion, $4K losses, $500 reactivation
Starting $50K, expansion $4K, downgrade $1.5K, churn $2.5K, contraction $0, reactivation $500. Retained $46K, net retained $50.5K, NRR 101% healthy, gross 92%, implied annual ~112.7%, growth +1% from existing.
FAQ
Common questions
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