What is CAC?

CAC — Customer Acquisition Cost — is the fully loaded cost to acquire one new customer. It is broader than CPA and pairs with LTV to judge growth.

Updated July 6, 20264 min read

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Profit Bid connects store costs to ad spend so you bid on margin — not vanity ROAS.

$ CAC

CAC rises as you move from high-intent to cold audiences. LTV decides how high a CAC you can afford.

Track POAS automatically from your store — upload profit conversions and scale winners with A/C/X labels.

CPA usually counts ad spend per conversion inside a platform. CAC adds tools, agency fees, creative, and counts new customers rather than orders.

A returning customer's order lifts CPA-style metrics but does not add to CAC, since no new customer was acquired.

CAC creeps up as you scale into less efficient audiences. Manage it by:

Common questions about this topic — tap to read answers.

There is no universal number. A good CAC is one your LTV comfortably exceeds — aim for an LTV:CAC ratio of 3:1 or better.

Blended CAC does (all new customers ÷ all spend). Paid CAC isolates acquisition channels. Track both.

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