Monday, May 4, 2026

How Does Card Processing Work?

There are two stages to credit and debit card processing – authorization and settlement. If a debit card is used, both authorization and settlement happen in seconds with the money coming out of your checking account. If a credit card is used for payment, the account information is routed from the merchant bank by the payment processor to the issuing bank for approval. The issuing bank will either confirm or deny the transaction and the payment processor will deliver that back to the merchant bank and to the card reader.

Unlike the near instant settlement for a debit card, a credit card settlement can take 1-3 business days. This is the process of actually moving the funds from the issuing bank to the merchant bank. Typically, businesses send batches of transactions to their payment processor at a regularly scheduled time, like the close of a business day. The payment processor and the card networks (Visa, MasterCard, etc.) will work to ensure the funds are deposited into the correct account.

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