Subscriber churn

Subscriber churn is the rate at which paying subscribers cancel or fail to renew a subscription service over a given period, most commonly reported monthly or annually.

It is calculated as subscribers lost during the period / subscribers at the start of the period, and is the direct counterpart to a churn rate calculation applied specifically to paid subscriptions rather than a broader customer base. Voluntary churn, a subscriber actively canceling, is usually reported separately from involuntary churn caused by a failed payment.

Media and software companies track subscriber churn alongside paywall conversion rate and customer lifetime value, since acquiring a new subscriber is typically far more expensive than retaining an existing one. A common pitfall is reporting a single blended churn figure that hides the difference between voluntary and involuntary churn, which call for very different fixes, content and pricing changes for the former, payment-recovery flows for the latter, and comparing churn rates across companies without accounting for differences in contract length or retention analysis cohorts.