To maintain healthy profit margins while running paid campaigns, calculate your ideal cost per click (CPC) based on your profit per conversion, the portion of profit allocated to advertising, and your conversion rate. Use the formula:
Ideal CPC = Profit per conversion × Profit allocated to advertising × Conversion rate.
For example, if you make $90 profit per sale, allocate 20% of that profit to ads, and have a 1% conversion rate, your ideal CPC is $0.18. Spending more than this per click risks eroding your profits. Regularly revisiting this calculation helps ensure your campaigns remain financially sustainable. [Semrush]