Net Revenue Retention (NRR) — A SaaS metric that measures how much recurring revenue from your existing customer base you retained over a period — factoring in churn (lost), downgrades, and expansion. Expressed as a percentage. A NRR above 100% means your existing customers grew enough (through upsells, add-ons, expansion) to more than offset what was lost to churn. A NRR below 100% means net shrinkage. Best-in-class SaaS companies often target 110%+.

See also: ARR, MRR, Churn, Expansion Revenue, Customer Health Score, QBR

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