What is customer retention rate?
Your retention rate is the share of the customers you started a period with who were still buying at the end of it. Start the year with 5,000, keep 3,100 of them, and your retention rate is 62%. Churn is the rest: 38% of the customers you had are gone.
Retention rate = (customers at end − new customers) ÷ customers at start
Every customer an ad wins is a bet that they will buy again. On the first order, most brands lose money: the cost of winning the customer is higher than the profit on what they bought. The bet pays off on the second, third and fourth orders, which carry no acquisition cost and drop their full margin to the bottom line. Retention is the rate at which the bet pays off, and it is the reason two brands with the same cost per customer can be completely different businesses.
Count customers who actually ordered in the period, not everyone on the list, and use a period that matches how often your product is bought. Twelve months is the honest period for most brands.
From a rate to a lifetime to a dollar figure
Three counts give you the rate. The rate gives you a lifetime. The lifetime gives you a value. Here they are worked through on the calculator’s example: 5,000 customers at the start, 4,600 at the end, 1,500 of them new, over twelve months.
Retention and churn
Take the customers at the end, subtract the new ones you won during the period (they were not there to retain), and divide by the customers at the start. If the period is not a year, the calculator compounds the rate out to twelve months so the lifetime maths is honest: losing 20% in six months is not losing 20% a year.
Example(4,600 − 1,500) ÷ 5,000 = 62% retained, 38% churned.
Customer lifetime
If you lose 38% of customers a year, the average customer lasts about one divided by 0.38. It is an average, and a rough one, but it is the honest link between a retention rate and a dollar figure.
Customer lifetime (years) = 1 ÷ annual churn rate
Example1 ÷ 38% = 2.6 years.
Lifetime value, on profit
Multiply the gross profit a customer generates in a year (order value, times orders per year, times margin per order) by the lifetime. On profit, not revenue, because the value of keeping a customer is what they leave you after the goods and shipping, not what they spend.
Lifetime value = AOV × orders per year × margin × lifetime
Example$90 × 2.5 × 55% = $123.75 a year × 2.6 years = $326.
What a few more points are worth
Run the same chain at the retention rate you want. The gain per customer is the difference, and multiplied by your current customers it is the value of the improvement across the whole base. It is nearly always a larger number than anyone expected, which is the point of running it.
ExampleAt 70% retention churn is 30%, the lifetime stretches to 3.3 years and lifetime value to $413: $87 more per customer, $399,474 across 4,600 of them.
Notice what the base is doing underneath the rate. The example store won 1,500 customers and lost 1,900, so it shrank by 400 over the year while spending to grow. That is acquisition running to stand still, and it is why retention sets the ceiling on what you can afford to pay for a customer: a brand that keeps 80% a year has a five-year customer and can pay a lot to win one; a brand that keeps 50% has a two-year customer and must be far more careful.
eCommerce retention benchmarks for 2026
How many of last year’s customers bought again this year, across more than a hundred retailers in seven categories:
| Category | Annual retention |
|---|---|
| Health & beauty | 41% |
| Department stores | 36% |
| Apparel | 32% |
| Sports & hobbies | 28% |
| All retailers | 27% |
| Footwear | 22% |
| Home goods | 21% |
| Jewellery & accessories | 19% |
Bluecore’s panel leans to larger retailers and has no food, supplement or pet category. For those, a 156,000-customer DTC dataset puts the share of new customers who order again within a year at 30–40% for consumables, against 12–17% for fashion and 10–15% for home and durables.
Nearly three-quarters of a typical retailer’s customers are one-time buyers, and across 3,000 online stores only about 15% of shoppers ever place a second order. Set against that, the example’s 62% is a subscription-grade figure, which is roughly what it takes: subscription brands keep about 45% of subscribers at six months and a third at twelve. The reason it is worth the work is what a kept customer does next: a third purchase is 95% more likely once someone has bought twice, and active repeat buyers place about 58% more orders and spend 69% more than new ones.
The rate becomes years like this:
| Annual retention | Churn | Customer lifetime |
|---|---|---|
| 80% | 20% | 5.0 years |
| 70% | 30% | 3.3 years |
| 60% | 40% | 2.5 years |
| 50% | 50% | 2.0 years |
| 40% | 60% | 1.7 years |
| 30% | 70% | 1.4 years |
| 20% | 80% | 1.3 years |
Timing matters as much as the rate. Half of the customers who come back place their second order within 30 days of the first, and three-quarters within 90, so the window to win the second order is short. In Australia, 93% of shoppers belong to at least one loyalty program but only half are active in all of theirs, and the average household now buys from 16 brands a year: being remembered is the whole game.
How to improve customer retention
Seven levers, roughly in the order they pay off. In the example every extra point of retention is worth about $9 per customer and $40,000 across the base.
1.Win the second order inside 30 days
Half of returning customers place their second order within a month of the first, and the second purchase is where retention is won or lost: nearly three-quarters of customers never make it. A post-purchase flow with a reason to reorder, timed to when the product runs out or the next need arrives, is the cheapest retention there is.
2.Bring in customers who will stay
A customer won with a deep discount on a product that is not quite for them churns fast; one won on the product’s real strength stays. The creative decides which, long before the email platform gets involved. That is why Paid Advertising is judged on new customers who come back, not on first orders.
3.Give them something to buy next
A second product, a refill, a subscription, a size up. Retention is a merchandising question as much as a marketing one, and the brands with one hero product and nothing to buy next are the ones whose churn no email can fix. Subscriptions do most of the work where they fit.
4.Stay in view between orders
Email and SMS do the reminding; an organic presence does the remembering. A brand a customer sees every week on TikTok or Reels is the one they reorder from among the 16 they buy from, which is the retention case for Organic Worlds.
5.Get the delivery and the returns right
Reliable delivery is the top trust factor for Australian shoppers and easy returns are what most of them say makes a great experience. A late parcel or a painful return ends more customer relationships than any competitor’s ad does.
6.Make loyalty mean something
Almost every Australian is in a loyalty program and only half are active in all of theirs. Points for the sake of points do nothing; early access, a member price on the replenishment order or a real perk on the second purchase do. Klaviyo’s Black Friday data had loyalty tactics beating blanket discounts for growth.
7.Measure it by cohort, and set it against CAC
Track the customers won in each month and how many of them buy again at 30, 90 and 365 days, so you can see which campaigns and offers bring in customers who stay. Then take the lifetime value from this page to the CAC & LTV calculator: retention is what decides how much you can afford to pay for the next customer.