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Profit Per Order
Formula-derived reference

Maximum CPA reference table by contribution margin

A transparent lookup table showing how much acquisition cost a $100 order can absorb before modeled order profit reaches zero. It is arithmetic, not an industry benchmark.

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Reference

$100 order · contribution before advertising

Maximum CPA equals pre-ad contribution. Break-even ROAS equals revenue divided by maximum CPA. Replace the illustrative $100 revenue with your actual order value in the calculator.

Pre-ad contribution marginMaximum CPABreak-even ROAS
10%$10.0010.00×
15%$15.006.67×
20%$20.005.00×
25%$25.004.00×
30%$30.003.33×
35%$35.002.86×
40%$40.002.50×
45%$45.002.22×
50%$50.002.00×
Formula

Maximum CPA = order revenue × pre-ad contribution margin. Break-even ROAS = order revenue ÷ maximum CPA. This table assumes $100 order revenue only to make the ratios easy to inspect.