Net Revenue Retention (NRR), also known as Net Dollar Retention (NDR), measures the percentage of recurring revenue retained from existing customers over a given period, factoring in upgrades, downgrades, reactivations, and cancellations. It answers a fundamental question: is your existing customer base growing or shrinking in value?
What is Net Revenue Retention?
NRR looks at a cohort of customers at the start of a period and measures what percentage of their revenue remains at the end — including any expansion or contraction. In SaaSFlow, NRR is calculated as:
Note that downgrades and churn are negative values in this formula. If you start the month with €100,000 MRR, gain €5,000 from upgrades, lose €2,000 from downgrades, and lose €1,000 from churn, with €500 from reactivations, your NRR is 102.5%.
Why NRR matters
NRR is one of the most important SaaS metrics because it:
- Reveals sustainable growth: An NRR above 100% means you can grow revenue even without acquiring a single new customer. This is the hallmark of a truly healthy SaaS business
- Signals product-market fit: High NRR indicates that customers not only stay, but find increasing value in your product over time
- Predicts long-term outcomes: Companies with high NRR compound their revenue growth from the existing base, dramatically reducing reliance on new customer acquisition
- Attracts investors: NRR is one of the first metrics investors examine. The best SaaS IPOs have consistently shown NRR above 120%
The power of NRR above 100%
When NRR exceeds 100%, your existing customer base is generating more revenue over time — even before counting new customers. This creates a powerful compounding effect:
- At 110% NRR, your existing customer revenue grows by 10% each period automatically
- At 120% NRR, existing customer revenue doubles in roughly 7 periods
- At 130% NRR, the compounding is even more dramatic
This is why investors prize high NRR so highly — it represents revenue growth with zero acquisition cost.
NRR vs Gross Revenue Retention
NRR and Gross Revenue Retention (GRR) are complementary metrics that together give a complete picture of customer retention:
- NRR includes expansion revenue (upgrades, cross-sells) alongside churn and downgrades. It can exceed 100%
- GRR excludes expansion revenue entirely and only measures losses. It can never exceed 100%
A company with 95% GRR and 115% NRR has a strong expansion engine that more than compensates for its churn. However, if GRR is 70% and NRR is 110%, the expansion looks healthy on the surface but masks a serious underlying churn problem. Looking at both metrics together reveals the full story.
Benchmarks
Good NRR depends on who you sell to. Small accounts rarely expand, so a self-serve product can retain well and still sit far below 100%. Larger accounts add seats and modules, which pushes the bar up. Annual NRR by average contract value (ACV), from the bottom quartile through the median to the top quartile:
- Self-serve (under €1K ACV): 47% / 64% / 79%
- SMB (€1-10K ACV): 75% / 89% / 102%
- Mid-market (€10-100K ACV): 97% / 103% / 112%
- Enterprise (€100K+ ACV): 98% / 104% / 110%
Self-serve and SMB come from ChartMogul's 2023 SaaS Retention Report, which measured annual NRR for companies above $300K ARR. Mid-market and enterprise come from SaaS Capital's 2025 retention benchmarks for companies above $1M ARR. The sources group companies by price ranges that only roughly match these segments, so each segment averages the closest ranges and the figures are estimates. SaaSFlow draws the same bands on your NRR chart when you turn on benchmarks.
Headline figures from public companies can sit far above these. Snowflake and Twilio reported NRR above 130% at their peaks, selling usage-based products to large enterprises with plenty of room to grow. Above 100%, the existing base grows on its own, and only mid-market and enterprise peers get there at the median.