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MarginMeter

Payment processing fees

Payment processing fees definition for SaaS and AI founders: what it means, how to calculate it, and common pitfalls when reading it in dashboards.

Payment processing fees are charged by providers like Stripe on each payment — typically a percentage of the amount plus a fixed fee, with extra for international cards and currency conversion.

Formula

Fee = Amount × Rate % + Fixed fee

In practice

For most SaaS, payment fees belong in COGS. Estimate yours with the Stripe fee calculator.

See your real margin in five minutes.

Connect Stripe and your cost providers with read-only access. Free for two connections — no card required.