Customer Acquisition Cost (CAC)

Total sales and marketing cost divided by new customers gained. The all-in price of one new customer, not just the ad spend per lead.

Free · no signup · last reviewed August 29, 2026

The definition

Total sales and marketing cost divided by new customers gained. The all-in price of one new customer, not just the ad spend per lead.

Why it matters to an owner

Count everything: ads, tools, the agency, your own selling hours. The honest CAC is always higher than the ad report's version. And it's the one profit depends on.

This is the work. Want it done?

Everything here is free to use yourself. That’s the point. If you’d rather a senior marketer just handle it, in your accounts and your name: 20-minute call, no pitch deck.

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