Question 1

What is Net Revenue Retention (NRR)?

Accepted Answer

NRR measures the percentage of recurring revenue retained from existing customers over a period, including expansion (upsells, seat additions), downgrades, and churn. An NRR above 100% means your existing customers are growing your revenue without any new sales. Formula: (Starting MRR + Expansion − Downgrade − Churn) ÷ Starting MRR.

Question 2

What's the difference between NRR and GRR?

Accepted Answer

Gross Revenue Retention (GRR) excludes expansion revenue — it only measures what you kept. NRR includes expansion and can exceed 100%. GRR is always ≤100%. Top SaaS companies target GRR >90% and NRR >120%.

Question 3

What is a good NRR for a SaaS company?

Accepted Answer

Excellent: >120% (best-in-class, e.g. Snowflake, Twilio). Good: 100–120% (healthy growth from existing customers). Average: 85–100% (flat or slight contraction). Poor: <85% (significant churn — fix before scaling acquisition).

Question 4

How is customer churn rate calculated?

Accepted Answer

Customer churn rate = (Customers lost during period ÷ Customers at start of period) × 100. A monthly churn rate below 2% is considered excellent for B2B SaaS.

Question 5

Do you save my data?

Accepted Answer

No. All calculations run in your browser and are saved to localStorage so you can come back later. We only capture your email if you request the PDF report.

Net Revenue Retention (NRR) & Churn Calculator