Why is adding the percentage to the bill not enough?

Because the fee is charged on the larger amount too. To receive $500 after a 3% fee you need more than $515, since 3% of $515 is more than $15. The calculator divides instead of adding, which gives the amount that works.

Which fee should I enter?

The one on the service's own fee page for the kind of payment you are taking or making. Services charge different rates for different payment types and change them, which is why none is stored here.

What are the smallest and largest fee for?

Some fees have a floor and a cap, such as a percentage with a minimum of a few cents and a maximum of a few dollars. Leave both at zero if yours has neither.

Salary & pay

Payment fee calculator

What a percentage fee and a fixed fee take from a payment, and what to ask for so the amount you wanted still arrives.

Payment

Percentage fee

An example. Replace it with the rate on the service's own fee page.

Fixed fee per payment

Enter 0 if there is none.

Smallest fee charged

Some fees have a floor. Leave at 0 if this one does not.

Largest fee charged

Some fees have a cap. Leave at 0 if this one does not.

Payments like this a year

Estimated fee on this payment

$15.30

3.06% of $500.00 · $484.70 arrives

You receive: $484.70
To receive $500.00, ask for: $515.77
Fees in a year: $183.60

The fees are your own figures, and the ones the page opens with are examples, not any service’s prices. Services charge different rates for different kinds of payment and change them, so read the rate for your case off their fee page. Currency conversion, refunds and chargebacks are left out. An estimate, not financial advice.

Questions

Why is adding the percentage to the bill not enough?: Because the fee is charged on the larger amount too. To receive $500 after a 3% fee you need more than $515, since 3% of $515 is more than $15. The calculator divides instead of adding, which gives the amount that works.
Which fee should I enter?: The one on the service's own fee page for the kind of payment you are taking or making. Services charge different rates for different payment types and change them, which is why none is stored here.
What are the smallest and largest fee for?: Some fees have a floor and a cap, such as a percentage with a minimum of a few cents and a maximum of a few dollars. Leave both at zero if yours has neither.

Why this number behaves the way it does

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