Churn Rate Calculator
Calculate monthly customer churn and revenue churn — with a 12-month retention curve showing how your base erodes.
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How this calculator works
Churn is the silent killer of subscription businesses. Customer churn measures how many customers you lose; revenue churn measures how much MRR you lose (which includes downgrades). Revenue churn is more important — you can lose customers but retain MRR if your remaining customers expand.
Customer churn = Lost customers ÷ Starting customers | Revenue churn = Lost MRR ÷ Starting MRR | Annual churn = 1 − (1 − Monthly churn)^12
Last updated: March 2026 · Rates and slabs updated for FY 2025-26
Negative revenue churn is gold
If expansion MRR from upsells exceeds churned MRR, you have negative net revenue churn — the business grows even without new customers.
Identify churn signals early
Most SaaS churn is predictable: declining usage 30–60 days before cancellation. Instrument your product to catch these signals.
Best-in-class benchmarks
B2B SaaS: <1%/mo churn. B2C: 3–5%/mo. E-commerce: 10–15%/mo. SMB-focused SaaS: 3–5%/mo.
Frequently Asked Questions
If expansion MRR from upsells exceeds churned MRR, you have negative net revenue churn — the business grows even without new customers.
Most SaaS churn is predictable: declining usage 30–60 days before cancellation. Instrument your product to catch these signals.
B2B SaaS: <1%/mo churn. B2C: 3–5%/mo. E-commerce: 10–15%/mo. SMB-focused SaaS: 3–5%/mo.