Target CPA Calculator

About this calculator

Target CPA (cost per acquisition) sets the maximum a business can afford to pay to acquire one customer while still hitting a desired profit margin. It starts from break-even CPA = average order value × gross margin% — the point at which acquisition spend exactly wipes out product profit — then subtracts room for the target profit margin to get the actual, more conservative maximum allowable CPA.

Bidding above the maximum allowable CPA means every new customer acquired actually loses the business money once the desired margin is accounted for, even if the sale itself looks profitable in isolation. Performance marketers running Google Ads, Meta Ads and other paid-acquisition channels calculate this figure to set manual bid caps or automated target-CPA bidding strategies that keep customer acquisition spend aligned with profitability goals rather than just chasing volume.