Gross Revenue Retention Calculator: What You Keep, Not What You Grow

Gross Revenue Retention shows how much of your recurring revenue you would keep if no customer ever expanded their plan, only churned or downgraded. It is the more conservative sibling of Net Revenue Retention, and precisely because it excludes expansion, it cannot be inflated by a handful of large accounts upgrading. Enter your starting MRR, churned MRR and downgrade MRR, and the calculator returns your GRR instantly.

How to calculate GRR

Subtract churned MRR and downgrade MRR from your starting MRR, then divide the result by starting MRR and multiply by 100. With 100,000 dollars in starting MRR, 4,000 dollars lost to churn and 2,000 dollars lost to downgrades, you retain 94,000 dollars, and 94,000 divided by 100,000 gives a GRR of 94%. GRR is capped at 100%, since it only ever measures what you keep, never what you gain.

GRR versus Net Revenue Retention

Net Revenue Retention adds expansion revenue from upsells and add-ons back into the same formula, which means NRR can climb above 100% if expansion outpaces losses. That makes NRR a growth metric as much as a retention one. GRR deliberately leaves expansion out, so it answers a narrower and often more honest question: without any new upsell revenue at all, how much of the business would still be there next month. A company can have strong NRR and weak GRR at the same time, if a few accounts expanding are masking broad churn everywhere else.

What good GRR looks like, and how to improve it

Most healthy SaaS businesses target GRR of 90% or higher, with the strongest companies at 95% or above. A GRR below 85% points to a product or onboarding problem that expansion revenue cannot be counted on to paper over. Improving GRR usually comes down to product fit, onboarding quality and proactive customer success, not marketing, though keeping a steady stream of well matched new customers through organic and AI search gives you more room to fix retention without the business shrinking in the meantime.