Payment Fee Calculator

Calculate a gross charge from a target net amount using an editable percentage and fixed fee. No provider-specific rates are implied.

Free to useCalculated in your browserv0.2.1 · Method documented September 12, 2026

Your inputs

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Saved only when you choose; never uploaded
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Know the limits. Excludes cross-border, currency-conversion and other fees. A calculated amount does not establish permission to pass processing fees to a customer.

How it works

With a $100 target, a hypothetical 3% fee and a $0.30 fixed fee, the model charges $103.41. These inputs are examples, not current provider pricing.

Charge = (target net + fixed fee) ÷ (1 − percentage fee)
Round charge up to the next cent

Try the example

The starter inputs above produce:

Amount to charge: $103.41

Change the inputs to match your own situation. The result is an estimate or text transformation, not a substitute for reviewing your source data.

A few useful details

Why divide instead of just adding the fee?

The percentage fee is also charged on the extra amount collected. Dividing by one minus the fee rate accounts for that.

Are these PayPal or Stripe rates?

No. Enter your own applicable fee schedule; the starting values are illustrative.

Do I need an account?

No. This release runs without an account, API key or payment. Saving a favorite stores only the tool’s identifier in this browser, not your inputs.