Net Revenue Retention (NRR): Formula & Benchmarks (2026)

Net Revenue Retention (NRR) is the percentage of recurring revenue you keep from existing customers, including expansion. Unlike GRR, NRR can exceed 100% — and when it does, the customer base grows in dollar terms even before counting new sales.

The formula

Expansion MRR is the new line vs. GRR. It includes seat expansions, plan upgrades, cross-sells, and overage charges — anything that increases recurring revenue from an existing account.

Worked example

Same Acme SaaS as the GRR example: starts the year with €1,200,000 ARR, loses €120,000 to churn and €40,000 to downgrades, and lands €180,000 of expansion.

NRR is just above 100% — barely net positive — but recall GRR was only 86.7%. The expansion is doing the heavy lifting; pure retention is weak. This is the classic "NRR masks GRR" pattern: investors looking at NRR alone would see a healthy number while the underlying retention story is concerning.

2026 NRR benchmarks

Public B2B SaaS leaders frequently report NRR in the 120–130% range — a level largely unreachable for SMB-focused tools, which is why NRR benchmarks should always be read with segment in mind. See 2026 SaaS churn rate benchmarks for fuller cuts.

Why NRR > 100% matters so much

NRR above 100% means the business compounds without adding new customers. At NRR 120%, a flat customer count grows ARR by 20% per year — meaning ARR roughly doubles in 4 years from existing customers alone. That compounding is why NRR is the single metric most correlated with B2B SaaS valuation multiples.

Conversely, NRR below 100% means the customer base is shrinking in dollar terms. Even strong new-sales growth has to fight that drag — a business growing 30% per year on new sales with NRR of 90% nets out at roughly 20% growth, not 30%.

How to read NRR with GRR

• NRR 105%+, GRR 90%+: healthy on both sides — pure retention is strong, expansion compounds.
• NRR 110%+, GRR < 85%: expansion masking churn — usually unsustainable unless expansion accelerates faster than churn.
• NRR < 100%, GRR 90%+: retention is fine but no expansion motion — there's pricing or product-line growth to unlock.
• NRR < 100%, GRR < 85%: two problems, not one. Diagnose retention first, expansion second.

Frequently asked questions

What is Net Revenue Retention (NRR)?

Net Revenue Retention (NRR) is the percentage of recurring revenue retained from existing customers over a period, including expansion (upsells and cross-sells). Unlike GRR, NRR can exceed 100% — when expansion outpaces churn and downgrades — which is the hallmark of a healthy B2B SaaS.

What is the NRR formula?

NRR = (Starting MRR − Churned MRR − Downgrade MRR + Expansion MRR) ÷ Starting MRR × 100. Expansion is the line that separates NRR from GRR.

What is a good NRR for B2B SaaS in 2026?

Median NRR for venture-backed B2B SaaS in 2026 is around 105%, with the top quartile at 115% or higher. Public B2B SaaS leaders frequently report NRR in the 120–130% range. Anything below 100% means the customer base is shrinking in dollar terms — even before counting new sales.

Why does NRR > 100% matter?

NRR above 100% means the existing customer base grows in revenue even before adding new logos. It compounds — at NRR 120%, a flat customer count doubles ARR in ~4 years from existing customers alone. NRR is the single metric most correlated with B2B SaaS valuation multiples.

Can NRR mask churn problems?

Yes. A small number of large expansion deals can push NRR above 100% while underlying retention (GRR) is poor. Always report NRR alongside GRR — if NRR is 110% but GRR is 80%, the business has a churn problem that expansion is currently masking. That gap typically can't be sustained.