Gross Revenue Retention (GRR)

Why it matters

GRR is the honest version of retention. Net revenue retention (NRR) lets upsells from happy customers paper over losses from churning ones; GRR strips expansion out and shows how leaky the bucket actually is. Benchmarks: SMB-focused SaaS typically lands at 80% to 90% because small businesses die and switch tools often, while enterprise SaaS runs 90% to 97%. Below 80%, you are replacing more than a fifth of your revenue base every year before you grow at all, and that treadmill gets worse as you scale. The GRR versus NRR gap is diagnostic: a company with 120% NRR but 78% GRR is losing customers fast and masking it with expansion from survivors, which works until the expansion well runs dry. Founders get this wrong by quoting only NRR, and experienced investors will always ask for both.

Formula

GRR = (Starting MRR - Churned MRR - Downgrade MRR) / Starting MRR x 100 (expansion excluded; maximum 100%)

Worked example

A cohort starts the year at $50k MRR. Over the year it loses $6k to cancellations and $1.5k to downgrades, and gains $9k in upsells. GRR = ($50k - $6k - $1.5k) / $50k = 85%, in the normal SMB band. NRR for the same cohort is 103%. Quoting only the 103% hides that 15% of the base revenue walked out.

Common mistakes

• Reporting NRR alone and letting expansion revenue hide a churn problem
• Comparing your SMB GRR against enterprise benchmarks, or vice versa
• Measuring monthly and annualizing carelessly; 98.7% monthly GRR compounds to about 85% annually
• Forgetting downgrades and counting only full cancellations, which overstates GRR

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