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 Assist Founder, this term appears in context with related indicators so you can move from definition to decision without switching tools.