Gross Revenue Retention (GRR) Calculator

What is gross revenue retention (GRR)?

Gross revenue retention (GRR) measures how much of your existing customers' recurring revenue survives a period after downgrades and cancellations, with expansion deliberately excluded. Because nothing can be added back, 100% is a hard ceiling and the metric cannot be flattered by upsell.

That is exactly why finance and investors treat GRR as the floor of a SaaS business: it is the revenue that survives with zero expansion optimism. A company with 120% NRR and 78% GRR is losing over a fifth of its base every year and buying it back with upsell.

The gross revenue retention formula

GRR = (starting ARR − contraction − churned ARR) ÷ starting ARR × 100.

Worked example with this calculator's default totals: $10.0M starting ARR with $0.4M of downgrades and $0.7M cancelled gives (10.0 − 0.4 − 0.7) ÷ 10.0 = 89%. If your own calculation comes out above 100%, expansion has leaked into the inputs.

What is a good gross revenue retention rate?

SaaS Capital's private-company survey puts the median near 90%, with best-in-class enterprise books at 95%+ and anything under 80% an urgent retention problem. SMB-heavy books run structurally lower because small accounts fail more often, so benchmark within your ACV segment.

GRR vs. NRR: which should you manage?

Report NRR to the board as the headline, but manage the business on GRR. NRR tells you whether the machine grows; GRR tells you whether the floor is holding. Operators fix GRR first because every point of churn saved raises both numbers, while a point of expansion only raises one.

How to improve gross revenue retention

GRR only moves by preventing losses: catch at-risk accounts before the renewal (usage decline, a departed champion, unresolved support load, and failed invoices precede most cancellations by months), fix downgrade drivers (seats that sit unused for two consecutive months usually get trimmed at renewal), and run save plays early (a rescue started 60+ days out succeeds far more often than one started the week of the call). Watching those signals per account, continuously, is the job GainTrace automates.