Net Revenue Retention (NRR)

NRR

Net Revenue Retention (NRR) — also called Net Dollar Retention (NDR) — measures the percentage of recurring revenue retained from existing customers over a period, including the effect of expansions, contractions, and cancellations. An NRR above 100% means your existing customer base is growing revenue on its own, before accounting for new customer acquisition.

formula.sh

NRR = (Beginning MRR + Expansion MRR − Contraction MRR − Churned MRR) / Beginning MRR × 100

> Beginning MRR — total recurring revenue from existing customers at period start
> Expansion MRR — additional revenue from upgrades, seats, usage, add-ons (existing customers only)
> Contraction MRR — revenue reduction from downgrades (existing customers only)
> Churned MRR — revenue fully lost from cancellations
> New customer MRR is NOT included in NRR — this metric measures existing customer behavior only

example

example.sh

Starting MRR $300,000. Expansions: $30,000. Contractions: $9,000. Cancellations: $12,000.

($300,000 + $30,000 − $9,000 − $12,000) / $300,000 × 100

→ 103% NRR — existing customers grow MRR by 3% per month without a single new sale.

why it matters

NRR is arguably the most important single metric for evaluating a SaaS business at scale. It encapsulates retention quality, expansion effectiveness, and pricing power all in one number. An NRR above 120% — achieved by Snowflake, Datadog, and the top tier of SaaS — means the business literally grows by default.

For fundraising, NRR above 120% unlocks premium valuation multiples because it de-risks the growth story. Investors can see that even in a sales slump, the existing customer base will continue growing ARR. Below 100% NRR, your new sales are simply replacing what you are losing — a treadmill, not a growth engine.

NRR benchmarks: under 90% is struggling, 90–100% is acceptable, 100–110% is strong, 110–120% is excellent, above 120% is exceptional (typical of usage-based infrastructure products).

common mistakes

✗Including new customer MRR in the NRR calculation — NRR must be measured only on the cohort of customers who existed at period start.

✗Confusing NRR with GRR; NRR can exceed 100%, GRR cannot — they answer different questions.

✗Reporting trailing-12-month NRR only, which smooths out deterioration; also track trailing-3-month to spot trends earlier.

pro tips

✓Decompose NRR into its four components (expansion rate, contraction rate, churn rate) for every board meeting — the aggregate hides the levers.

✓Build segment-level NRR: enterprise NRR and SMB NRR will be dramatically different and need different interventions.

✓Use NRR cohort curves: plot NRR for each acquisition quarter at 6, 12, 18, 24 months. Improving curves across vintages prove your retention motion is getting better.

the mrrsucks take

NRR above 100% is proof your product is worth more to customers over time. NRR below 100% means you're running a very expensive customer rental business, and the customers are deciding not to renew the lease.

faq

What is the difference between NRR and GRR?+

GRR (Gross Revenue Retention) counts only retained revenue — it can never exceed 100%. NRR adds expansion revenue on top of retained revenue — it can exceed 100%. GRR shows your retention floor; NRR shows your retention plus growth ceiling.

How do I improve NRR?+

Three levers: reduce cancellation churn (improve product and onboarding), reduce downgrade churn (improve value delivery at each tier), and increase expansion (design pricing that grows with customer success, invest in expansion CS motions).

What NRR do investors expect for Series A?+

Series A investors typically want to see NRR above 100%, with 110%+ considered strong. At Series B/C, 120%+ NRR is a prerequisite for the highest-multiple valuations. Below 90% NRR at any growth stage will draw significant scrutiny.

The churn spiral›$1K MRR milestone›

related metrics

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