Follow these steps to refund part or all of a credit card transaction:
Open the reservation or bill in question.
Select the payment you want to perform the refund on. It will turn blue.
Click the black Refund button just above.
In the popup, enter the refund amount to refund back to the card.
Click the green Refund payment button to complete the transaction.
Notes:
Your user must have permission to refund customers.
If the Refund button is not clickable (gray), then either the payment is not selected, or you do not have permission to refund.
You can only refund on SETTLED transactions.
If you get an error message when you attempt to refund, please contact your payment gateway or payment processor for more information.
Related: How to Refund other payment types


