Net Revenue Retention (NRR)
The percentage of recurring revenue retained from an existing customer cohort over a time period, including expansion and contraction.
What Is Net Revenue Retention (NRR)?
Net Revenue Retention measures what happened to the MRR/ARR of a customer cohort over time, including upgrades, downgrades, and churn. NRR over 100% means expansion in the measured cohort more than offset churn and contraction during that period.
Also Known As
- Finance teams: net dollar retention (NDR), net MRR retention
- Investor view: expansion efficiency metric
- Sales teams: account growth rate
- Board reports: NRR, NDR, net retention
How It Works
Illustrative example: Starting MRR from a January cohort is $100K. Twelve months later, $18K has churned, $32K has expanded, and $4K has contracted. Ending MRR = $100K - $18K + $32K - $4K = $110K. NRR = $110K / $100K = 110%. The measured cohort produces 10% more recurring revenue than at the start, excluding new-logo acquisition.
Best Practices
- Do measure NRR on a cohort basis, not a rolling book of business — cohort NRR is what investors actually want.
- Do separate expansion by type (seats, usage, plan upgrades) to understand which motion is working.
- Do track NRR by customer segment. Enterprise NRR and SMB NRR are usually very different.
- Don't confuse NRR with GRR. GRR excludes expansion; NRR includes it.
- Don't report NRR without showing the components (churn, contraction, expansion) — the headline number hides the story.
Common Mistakes
- Inflating NRR with price increases. Price hikes can push NRR above 100% without real customer growth.
- Counting one-time professional services revenue as expansion. It's not recurring; it doesn't count.
Industry Context
NRR should be compared with businesses that share a customer segment, pricing model, contract structure, and measurement method. Usage-based, seat-based, and fixed-price models create different expansion mechanics, so a cross-company ranking without those controls can mislead.
The Behavioral Science Connection
NRR above 100% may reflect deeper usage, added seats, price changes, cross-sell, or other expansion mechanics. Workflow embedding and status quo bias are possible contributors, but the metric alone does not identify why a cohort expanded.
Key Takeaway
NRR is one useful view of cohort economics. Read it alongside GRR, pricing changes, expansion sources, margin, and customer concentration so the headline number does not hide how growth occurred.