Gross MRR Churn Rate and Net MRR Churn Rate both measure revenue loss in subscription businesses, but they approach this measurement from different angles. Gross MRR Churn Rate calculates the percentage of monthly recurring revenue lost from cancellations and downgrades, without accounting for any offsetting growth from existing customers. It's a straightforward measure of revenue attrition that reflects the raw loss of business. Net MRR Churn Rate, however, factors in expansion revenue from existing customers (through upsells, cross-sells, and usage increases) alongside the lost revenue. This comprehensive metric can actually be negative when expansion revenue exceeds lost revenue, indicating that a company is growing its revenue from the existing customer base even without acquiring new customers.
Consider a SaaS company that lost $10,000 in monthly recurring revenue from cancellations and downgrades, while generating $12,000 in expansion revenue from existing customers, out of a total MRR base of $100,000. Its Gross MRR Churn Rate would be 10%, highlighting concerning revenue attrition that requires attention. However, its Net MRR Churn Rate would be -2%, revealing that despite those losses, the business is actually growing organically through its existing customer relationships. Use Gross MRR Churn when you need unvarnished visibility into customer loss patterns and retention challenges. Use Net MRR Churn when evaluating overall business health and growth potential, especially when deciding whether to focus resources on customer retention versus acquisition strategies. Companies with low or negative Net MRR Churn can often afford to invest more aggressively in acquisition, knowing their existing customer base continues to grow in value over time.
