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Net Revenue Retention (NRR) & GRR Formulas

Transparent mathematical methodology explained in plain English.

NRR % = [(Starting MRR + Expansion - Contraction - Churn) / Starting MRR] × 100

Measures the percentage of recurring revenue retained from an existing cohort over 12 months, including account expansions, cross-sells, and cancellations.

Variables Explained:

  • Starting Cohort MRR ($): Beginning recurring revenue of customer cohort.
  • Expansion MRR ($): Upgrades, seats added, and cross-sells from the cohort.
  • Contraction MRR ($): Downgrades within the cohort.
  • Churned MRR ($): Lost revenue from cancelled accounts.
Real Project Example

$100,000 Cohort MRR with $25,000 Expansion and $5,000 Churn

Computing NRR and Gross Revenue Retention.

Sample Project Inputs:
Starting MRR:$100,000
Expansion MRR:$25,000
Contraction MRR:$2,000
Churned MRR:$5,000
Step-by-Step Calculation:
  1. Ending Cohort MRR = $100,000 + $25,000 - $2,000 - $5,000 = $118,000.
  2. Net Revenue Retention (NRR) = ($118,000 / $100,000) × 100 = 118.0%.
  3. Gross Revenue Retention (GRR) = [($100,000 - $2,000 - $5,000) / $100,000] × 100 = 93.0%.
Calculated Answer:118.0% Net Revenue Retention (NRR) and 93.0% Gross Revenue Retention (GRR).
Verified Calculation StandardsE-E-A-T Verified

Formulas calibrated against Standard Compound Amortization Algebraic Models & Truth in Lending (TILA) Formula Standards. Calculations are computed 100% client-side in your browser for absolute data privacy.

Knowledge Base

Domande Frequenti (FAQ): NRR Calculator

Click any question below to expand quick answers, formulas, and expert tips.

What is a benchmark NRR for top-performing SaaS companies?

Best-in-class enterprise SaaS companies achieve NRR of 120% to 140%+. Mid-market SaaS companies typically aim for 105% to 115% NRR.

Why can GRR never exceed 100%?

Gross Revenue Retention (GRR) explicitly excludes expansion revenue and only measures how much of the original baseline revenue is retained after churn and downgrades.