SaaS Churn Rate Calculator (Logo, Gross & Net Revenue Churn

SaaS Financial Metrics: Logo Churn vs. Gross Churn vs. Net Churn

• Logo / Customer Churn: The raw count percentage of customers who leave. Useful for evaluating SMB product usability and customer satisfaction.

• Gross Revenue Churn: The dollar percentage of MRR lost to cancellations and plan downgrades, completely ignoring new upsells (measures pure baseline erosion).

• Net Revenue Churn: Incorporates expansion revenue from existing accounts. When expansion exceeds gross churn, Net Churn becomes negative, which is the primary driver of unicorn SaaS valuations.

How to Use This Calculator

Enter your Starting Customers / Accounts at Beginning of Month (e.g. 1200), Customers / Accounts Cancelled during Month (e.g. 36), Starting Monthly Recurring Revenue () (e.g. 96000), Churned MRR ( from account cancellations) (e.g. 2880), Contraction MRR ( from plan downgrades) (e.g. 960 (or 0)), and Expansion MRR ( from existing customer upgrades/add-ons) (e.g. 4800). Results update instantly as you type — adjust any value to compare scenarios.

The Formula

SaaS Logo Churn, Gross Revenue Churn & Net Revenue Churn formulas: / Customer Churn Rate (\%) = ((Customers Churned in Month) / (Starting Customers)) × 100\% Revenue Churn Rate (\%) = ((Churned MRR + Contraction MRR) / (Starting MRR)) × 100\% Revenue Churn Rate (\%) = (((Churned MRR + Contraction MRR) - Expansion MRR) / (Starting MRR)) × 100\% Revenue Retention (NRR \%) = 100\% - Net Revenue Churn Rate (\%) Compound Churn Rate = 1 - (1 - Monthly Churn)^12 Customer Lifespan (Months) = (1) / (Monthly Churn Rate)

Worked Example

For example, starting the month with 1,200 customers and 96,000 MRR, losing 36 customers (2,880 Churned MRR) and 960 to Contraction (3,840 Gross Loss), while gaining 4,800 in Expansion MRR: . Gross Revenue Churn is . Net Revenue Churn is delivering a Net Revenue Retention (NRR) of 101.00% (Net Negative Churn).

Understanding Your Result

Benchmark monthly churn rates for SaaS: Best-in-class below 0.5%, good 0.5–1%, average 1–2%, above 2% requires urgent attention. Annual churn above 24% (2% monthly) means the business replaces its entire customer base every 4–5 years — growth becomes a treadmill. Net Revenue Retention (NRR) above 100% means existing customers expand faster than they churn — the most powerful growth lever available. Top-quartile SaaS companies have NRR above 120%. Monthly churn of 1% compounding annually equals 11.4% annual customer loss.