Calculatort

Customer Acquisition Cost Calculator

Calculate CAC from marketing and sales spend, and how long it takes to earn back.

Cost per new customer

How it works

All acquisition spend is divided by the customers it won; payback divides that cost by the monthly gross margin each customer brings.

Example

$27,000 of spend for 150 customers is $180.00 each, paid back in 4.5 months at $40 of monthly margin.

This tool is for estimation and education, not financial, tax, or legal advice.

Frequently asked questions

Is this an accounting system?

No. Each tool answers one question from figures you already have, with the method shown.

Does the calculator send my numbers anywhere?

No. The calculation runs locally in your browser.

Which figures should I use?

Whatever period you are judging — a month, a quarter, a year — as long as every input covers the same one.

Related business tools

All business calculators · ROAS Calculator · Customer Lifetime Value Calculator