Customer Retention Rate (CRR)
Customer Retention Rate, or CRR, measures what share of existing customers you kept over a period.
Ending customers minus new ones, divided by starting customers. That is CRR: how many of your customers stayed. It matters because keeping a customer is almost always cheaper than replacing one. Subtracting new customers stops acquisition from hiding retention problems.
Signal Type
Metric Role
Metric Type
The Formula
Worked example
Benchmarks and interpretation
Where the number actually comes from
When to use it
Common Mistakes
In the REACT framework
CRR sits in the Talk phase. Retention decides how long your reach, engagement, and conversion spend keeps paying you back. Nothing in marketing compounds until this number holds steady.
Related metrics
Frequently Asked Questions
What is Customer Retention Rate?
Customer Retention Rate, or CRR, measures what share of existing customers you kept over a period. It tells you whether the base you already paid for is holding.
How do you calculate Customer Retention Rate?
Use the formula: CRR = ([Ending Customers - New Customers] ÷ Starting Customers) × 100. Keep both inputs in the same reporting period and avoid mixing users, sessions, events, or customers unless the formula calls for it.
What data do you need for CRR?
You need starting customer base and retained customers, pulled from the relevant connected sources and computed for the same period.
What mistakes should you avoid with CRR?
Always subtract new customers from the ending count, or acquisition will disguise the problem. And if revenue is concentrated, do not measure retention in customer counts alone: pair it with NRR.
When should marketers use CRR?
Use CRR when weighing retention initiatives against acquisition spend. A stable or rising CRR is the licence to push growth. A falling one says fix the leak first.
What is a good CRR?
Good depends on contract length and category: annual B2B should retain far more than monthly consumer. Track your own trend, and treat any decline as a question needing an answer.
Sources and methodology. CRR formula and definition derive from standard marketing analytics practice and platform reporting conventions. REACTIQ360 harmonises source data from CRM / billing / ecommerce, Customer lifecycle systems, Harmonisation layer and applies a consistent same-period computation methodology.
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