How to calculate it
Take the number of customers at the end of a period, subtract the new customers you gained during it, then divide by the number you started with. If you began with 200, ended with 210 and gained 30 new ones, your retention rate is 180 divided by 200, or 90%.
What it looks like by business
For subscriptions, retention means customers who keep paying. For stores, restaurants and service businesses, it usually means customers who come back and buy again within a normal time frame.
What moves it
A good first experience, reliable service, easy reordering, helpful follow-up emails and fast fixes when something goes wrong all keep customers around. Loyalty programs help, but only on top of a good core experience.
Why Customer Retention matters
Keeping a customer usually costs less than finding a new one, and returning customers often spend more over time. Better retention raises lifetime value, which lets you spend more to win new customers profitably.
A follow-up that brought customers back
A pet supply store noticed many first-time buyers never ordered again. It added a reminder email timed to when a typical bag of food would run out, with a one-click reorder link. More first-time buyers came back for a second order.
Common mistakes
Only measuring new sales
Strong new sales can hide customers quietly leaving. Track retention by month or by customer group.
Waiting until customers leave
Win-back campaigns help, but it is easier to keep customers happy earlier. Watch for warning signs like fewer orders or logins.
Treating every customer the same
Your best customers and one-time buyers need different follow-up. Segment by purchase history.
Where we work on this