What Is Churn Rate in SaaS?
Churn rate measures the percentage of customers or revenue lost during a period. Monthly customer churn above 3% is a warning sign; best-in-class SaaS companies keep it below 1.5%. Revenue churn (also called MRR churn) is usually more important than customer churn because losing a high-value subscriber hurts more than losing a low-value one.
Why it matters: this metric helps founders separate random variation from real business movement. Decisions improve when the metric is tracked in trend form, not one-off snapshots.
How to use it in practice: pair this metric with at least one upstream and one downstream signal. That way, you can explain why it changed and what action should come next.
In AI Co-Founder, this term appears in context with related indicators so you can move from definition to decision without switching tools.