What is Churn Rate?
Churn rate is the percentage of customers or revenue lost over a given period — those who cancel, stop paying or stop using the product. It is the inverse of retention and a critical health measure for subscription products: high churn means growth spend is filling a leaking bucket.
Reviewed by Gensudo Team · 23 July 2026
In more depth
Churn comes in two flavours that can tell different stories: customer churn (the share of accounts lost) and revenue churn (the share of recurring revenue lost). A product can lose many small accounts while revenue churn stays low, or lose one large account and suffer badly on revenue despite healthy logo numbers. Because churn compounds monthly, seemingly small rates are severe — a few per cent a month removes a large fraction of a customer base within a year. The most useful churn analysis segments by cohort, plan and acquisition channel, and distinguishes voluntary churn (a decision to leave) from involuntary churn (failed payments), which have entirely different remedies.
Why it matters
Churn sets the ceiling on growth: past a certain size, a product with high churn spends its entire acquisition budget replacing lost customers before adding a single new one. Churn is also the bluntest verdict customers deliver — people who leave are telling you the product stopped being worth its cost — so rising churn is usually the earliest reliable warning that value, pricing or competition has shifted.
A product example
A subscription product's monthly customer churn creeps from 2% to 4%. Cohort analysis shows the increase is concentrated in customers acquired through a recent discount campaign, who churn heavily as soon as full pricing begins — while established cohorts are stable. The finding redirects the response from product changes towards acquisition quality and onboarding for price-sensitive segments.
Documents where this shows up
Post-Launch Review for Product Directors · Product-Market Fit Assessment for Product Managers · Product Sunset Assessment for Heads of Product
Related terms
Retention Rate · Activation Rate · KPI (Key Performance Indicator) · Product-Market Fit