Subscription Billing Errors
Subscription billing errors are inaccuracies in the recurring billing process that result in customers being charged incorrectly — either too much (compliance risk, refund liability) or too little (revenue leakage).
Common subscription billing errors include: charging the wrong plan tier, failing to apply or remove discounts at the right time, not prorating correctly during mid-cycle changes, missing usage-based overage charges, and applying taxes incorrectly.
Billing errors affect 5-10% of subscriptions in companies with complex pricing. The financial impact is asymmetric: underbilling is rarely reported by customers (they benefit from the error), while overbilling triggers complaints and refunds. This means underbilling — the revenue leakage component — often persists for months before detection.