What is Churn Rate?

Churn rate is a critical metric for any subscription-based or recurring revenue business, representing the percentage of customers who stop doing business with a company during a specific timeframe. For SaaS startups, churn is often considered the "silent killer" of growth. No matter how fast you acquire new customers, your company cannot scale if you are losing them at a high rate. Churn is typically measured in two ways: Customer Churn (the percentage of total customers lost) and Revenue Churn (the percentage of Monthly Recurring Revenue lost). A high churn rate usually points to fundamental issues, such as a lack of product-market fit, poor customer onboarding, unreliable technology, or superior offerings from competitors. Conversely, a very low churn rate indicates a "sticky" product that provides high value and becomes indispensable to its users. The ultimate goal for many SaaS companies is achieving "Negative Churn," where the additional revenue from existing customers (through upgrades, cross-sells, or seat expansion) exceeds the revenue lost from customers who cancel. Monitoring churn cohorts allows founders to identify specific triggers for cancellation and implement targeted customer success strategies to improve retention and maximize the long-term value of every customer acquired. It is also important to distinguish between "voluntary" and "involuntary" churn.