Gross Revenue Retention (GRR)

Gross Revenue Retention is the percentage of recurring revenue retained from existing customers over a given period, excluding any expansion or upsell revenue. It measures pure retention: how much of your existing ARR survived.

The formula: (Starting ARR - Contraction - Churn) / Starting ARR x 100. GRR is always 100% or below. If someone tells you their GRR is above 100%, they're calculating it wrong.

GRR is the metric that tells you whether your core product delivers enough value to keep customers renewing at their current spend level. NRR can mask retention problems when strong expansion offsets churn. GRR strips that mask off.

For PE-backed SaaS companies, GRR is a diligence metric. Investors want to see 90%+ GRR as a minimum threshold and 93-96% as top-quartile performance. GRR below 85% signals structural product or market fit issues that expansion alone won't fix.

The distinction between GRR and NRR matters for capital allocation decisions. A company with 88% GRR and 104% NRR is growing its existing base on paper, but losing 12% of its revenue floor every year. That's a fragile expansion motion built on an eroding foundation. The Churn Tax on that 12% loss is significantly larger than the reported number suggests.

Related terms: Net Revenue Retention, The Churn Tax, Revenue Leakage

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