Churn rate tracks how many customers a business loses over a defined period. Also called attrition rate, this metric reveals customer retention health. The average ecommerce churn rate ranges from 62% to 82% annually, with consumer electronics reaching the highest levels. Subscription businesses typically see lower churn at 3-5% monthly compared to 7-10% for traditional retail.
Calculating Churn Rate
For subscription businesses, the formula divides lost customers by starting customers. If you began with 1,000 subscribers and ended with 950 (excluding new acquisitions), your churn rate is 5%. Always account for new customers acquired during the period to avoid masking true churn.
Non-subscription retailers use instead. Group customers by first purchase date, then measure what percentage failed to reorder within two times your average repeat purchase window.
Voluntary vs Involuntary Churn
Voluntary churn happens when customers actively decide to stop buying. Dissatisfaction, better alternatives, or changed needs drive this behavior. Involuntary churn results from payment failures, expired cards, or technical issues preventing purchases.
Addressing involuntary churn often provides quick wins. Automated card update requests and payment retry sequences recover revenue without changing customer perception.
Churn Rate vs Retention Rate
Churn rate measures the share of customers who stop buying over a period. measures the share who stay. They are two sides of the same metric, so they roughly add up to 100%. A 30% annual churn rate maps to about 70% retention.
Why Churn Matters for Profitability
Repeat customers generate 44% of revenue despite representing only 21% of the customer base. Acquiring new customers costs six to seven times more than retaining existing ones. Even small churn reductions compound into significant revenue gains over time.
Zero churn is impossible. The goal is keeping churn below your customer acquisition rate, ensuring net growth while maximizing from existing relationships.
