What is payment surcharge?

What is payment surcharge?

A surcharge, also known as checkout fee, is an extra fee charged by a merchant when receiving a payment by cheque, credit card, charge card or debit card (but not cash) which at least covers the cost to the merchant of accepting that means of payment, such as the merchant service fee imposed by a credit card company. (Wikipedia)

General information about payment fees can be found on https://en.wikipedia.org/wiki/Surcharge_(payment_systems)

For the specific ones which apply to you please check Paypal, Visa Card, Mastercard in your country.