Net revenue retention (NRR) measures the percentage of recurring revenue retained from existing customers over a period, including upgrades, downgrades, and churn. An NRR above 100% means your existing customer base is growing without any new sales.
The Formula
NRR = (Starting MRR + Expansion MRR - Contraction MRR - Churn MRR) / Starting MRR x 100
Example: You start the quarter with $100K MRR. Customers upgrade $15K, downgrade $5K, and churn $8K. Your NRR is ($100K + $15K - $5K - $8K) / $100K = 102%. Your existing customers are generating 2% net growth.
What Good Looks Like
Best-in-class SaaS companies hit 120-130% NRR. That means existing customers expand revenue by 20-30% annually without new logos. Snowflake, Twilio, and Datadog have historically operated in this range.
For most B2B SaaS, 100-110% is healthy. Below 90% means you are leaking revenue faster than you can replace it, and no amount of new customer acquisition will fix the underlying problem. Check the SaaS Benchmarks tool to compare your NRR against industry medians.
Why PMs Should Care
NRR is a product quality signal. High NRR means customers find increasing value over time. They adopt more features, add more seats, or upgrade to higher tiers. Low NRR means the product is not sticky enough or the pricing model does not capture the value being delivered.
As a PM, you directly influence NRR through three levers:
Expansion features: Build capabilities that naturally drive upgrades. Usage-based pricing, premium tiers, and add-on modules all increase expansion MRR.
Retention features: Reduce churn by solving the problems that cause customers to leave. Track feature adoption using the feature adoption calculator to identify where engagement drops.
Activation improvements: Faster time-to-value reduces early churn, which is the largest component of revenue loss for most products. The NPS Calculator helps you measure satisfaction across the customer lifecycle.
NRR vs Gross Revenue Retention
Gross revenue retention (GRR) excludes expansion. It only measures what percentage of existing revenue you kept. GRR can never exceed 100%. NRR can exceed 100% because expansion offsets losses.
GRR tells you how bad your churn problem is. NRR tells you whether expansion compensates for it. You need both. A company with 85% GRR and 110% NRR is growing but has a serious churn problem masked by upsells.
The north star metric guide can help you decide whether NRR or another metric should be your primary focus.