NRR measures whether your existing customers pay you more or less than last year. An NRR > 100% means your business can grow even without acquiring a single new customer: the installed base grows on its own through upgrades and expansion.
Compare your revenue from customers 12 months ago (excluding new customers) against what those SAME customers pay you today. Tools like ChartMogul or Baremetrics calculate this automatically from Stripe. Without those tools: current revenue from that cohort ÷ revenue from that cohort 12 months ago × 100.
An NRR < 90% indicates that even without customer churn, revenue falls. It signals that customers are using the product less and less or downgrading — a deeper structural problem than account churn.
| Status | Range |
|---|---|
| Healthy | > 105% annual |
| Alert | 95–105% annual |
| Critical | < 95% annual |
Without active upselling, NRR tends toward 100% minus churn. The most direct lever is a systematic expansion process: quarterly account reviews, high-usage alerts, and clear tier limits that naturally invite upgrades.
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