Marketing Calendar 2026
Customer Retention Rate (CRR)
Customer Retention Rate (CRR) is a metric that tells you how well your business keeps its customers over time. In simpler terms, it measures how many of your customers stick around rather than dropping off after the first purchase or trial. For marketers, it’s a bit like a loyalty score, but instead of being based on feelings, it’s based on facts.
The formula is straightforward:
((Customers at end of period – New customers acquired during period) ÷ Customers at start of period) × 100It helps to isolate returning customers by removing new ones from the equation. After all, CRR is about who decided to stay, not who just walked in the door.
CRR also becomes more insightful when paired with other data. For example, if you have a high acquisition rate but low retention, you might have a mismatch in your messaging: maybe people sign up expecting one thing, but get another. Conversely, a high CRR tells stakeholders that people aren’t just clicking, but they’re committing.