Definition
Purchase frequency is the average number of purchases per customer in a given period. If a customer buys 2.4 times a year on average, the annual purchase frequency is 2.4.
Also called: Purchase frequency, Purchase Frequency, Order FrequencyFollow the same customers over time.
customers buying in month 3. Each column shows the time since acquisition.
01Group customers by the date of their first purchase.
Purchase frequency in the CLTV equation
CLTV = average order value × margin × number of purchases over the lifetime. Purchase frequency is the last factor, and often the easiest to move, because it's about getting existing, happy customers to come back a little more often.
Lift frequency from 2 to 3 purchases a year without touching AOV or margin, and CLTV rises by 50%. And because these are existing customers, the lift costs no new acquisition — it's pure retention economics.
Purchase frequency and payback
Frequency affects not only how much the customer is worth, but how fast. If the customer buys more often, CAC is recouped sooner, the payback period shortens, and capital can recirculate to the next customer. Frequency is therefore both a CLTV driver and a cash-flow driver.
The strongest levers are timed contact (replenishment just before the product runs out), relevant cross-sell, and for the right products, subscription, which makes frequency predictable.
Frequently asked questions
How are purchase frequency and CLTV related?
Frequency is one of the three factors in CLTV (order value × margin × number of purchases). More purchases per customer lift customer value directly — and because these are existing customers, the lift costs no new acquisition.
Does purchase frequency affect my payback period?
Yes. If the customer buys more often, the acquisition cost is recouped sooner, payback shortens, and capital can be reinvested faster in the next customer.
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Nicklas Segatz Mortensen
Growth hacker and fractional CMO with 10+ years' experience and hundreds of millions in managed ad spend behind him. Background from larger Danish and international scale-ups, and from the agency world.
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