Direct answer
Net revenue retention compares recurring revenue retained from a starting customer base after expansion, contraction and churn, excluding revenue from newly acquired customers.
What this calculation tells you
NRR shows whether the opening customer base grows or shrinks without relying on new acquisition. It combines retention and expansion into one installed-base signal.
A strong total can hide weak segments or concentration, so movement detail remains essential.
Where it is used
SaaS
Measure installed-base recurring revenue across upgrades, downgrades and cancellations.
Managed services
Track retainer expansion and contraction among opening accounts.
Telecommunications
Compare account revenue continuity under plan and usage changes.
Board reporting
Separate growth from existing customers and growth from acquisition.
Common situations
- Expansion offsets customer cancellations.
- One large customer upgrade dominates the rate.
- New sales are mistakenly included.
- Foreign exchange changes contract values.
Freeze the starting cohort
Identify recurring revenue from customers active at the period start. Follow only that cohort through the measurement window.
Bridge every movement
Separate expansion, contraction and churn, and explain reactivations, currency and plan migrations. The bridge should reconcile to cohort ending revenue.
Pair net with gross retention
GRR excludes expansion and reveals downside retention. NRR shows whether expansion offsets it. Both are useful.
Inspect concentration and maturity
Segment by account size, plan, cohort and geography. A single expansion can make a small base volatile.
- Exclude new logos.
- Keep constant-currency views where material.
- Reconcile to the recurring ledger.
Practical questions
Frequently asked questions
Can NRR exceed 100%?
Yes, when expansion from retained starting customers exceeds contraction and churn.
Why exclude new customers?
The metric is designed to isolate performance of the opening base rather than acquisition.
Does high NRR guarantee profitability?
No. Service cost, acquisition cost, margin, concentration and cash timing still matter.
Further reading
Authoritative sources
Use these primary and professional resources to check definitions, conventions, or requirements that may extend beyond this guide.