Usually it is a fee that a merchant's bank (the "acquiring bank") pays a customer's bank (the "issuing bank") however there are instances where the interchange fee is paid from the issuer to acquirer, often called reverse interchange. In a credit card or debit card transaction, the card-issuing bank in a payment transaction deducts the interchange fee from the amount it pays the acquiring bank that handles a credit or debit card transaction for a merchant. The acquiring bank then pays the merchant the amount of the transaction minus both the interchange fee and an additional, usually smaller fee for the acquiring bank or ISO, which is often referred to as a discount rate, an add-on rate, or pass thru. For cash withdrawal transactions at ATMs, however, the fees are paid by the card-issuing bank to the acquiring bank (for the maintenance of the machine). These fees are set by the credit card networks, and are the largest component of the various fees that most…
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