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Step 1: The customer pays with MasterCard
The customer purchases goods/services from a merchant.
Step 2: The payment is authenticated
The merchant point-of-sale system captures the customer’s account information and securely sends it to the acquirer.
Step 3: The transaction is submitted
The merchant acquirer asks MasterCard to get an authorization from the customer’s issuing bank.
Step 4: Authorization is requested
MasterCard submits the transaction to the issuer for authorization.
Step 5: Authorization response
The issuing bank authorizes the transaction and routes the response back to the merchant.
Step 6: Merchant payment
The issuing bank routes the payment to the merchant’s acquirer who deposits the payment into the merchant’s account.