The SaaS churn math nobody talks about

📰 Medium · Startup

Learn the correct math behind SaaS churn rates to avoid misinterpreting metrics and making poor business decisions

intermediate Published 18 Apr 2026
Action Steps
  1. Calculate annual churn using the correct formula: 1 − (1 − monthly churn)^12
  2. Avoid multiplying monthly churn by 12 to get annual churn
  3. Use the correct formula to evaluate the impact of small monthly improvements on annual churn
  4. Apply the formula to your business's metrics to identify areas for improvement
  5. Compare your calculated annual churn to industry benchmarks to assess your business's performance
Who Needs to Know This

Product managers, founders, and growth teams can benefit from understanding SaaS churn math to accurately assess their business's health and make informed decisions

Key Insight

💡 Churn is multiplicative, not additive, so use the formula 1 − (1 − monthly churn)^12 to calculate annual churn

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📊 Don't let miscalculated churn metrics mislead you! Learn the correct SaaS churn math to make informed business decisions 💡
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