Thanks for joining the thread, @Carlos DeGannes. I'll share an insight on your query about processing fees in QuickBooks Online.
Processing fees cannot be returned or refunded when reversing a transaction for a customer.
Also, a refund or return transaction will be charged a fee depending on your pricing plan and transaction type.
You can sign in to your Merchant Service Center to review the rates. By this, you were able to know the amount being charged. The cost is typically determined based on a percentage of the transaction and a flat fee.
In addition, I've got these helpful resources for further details about:
Also, here's a link that has detailed steps on how to refund a payment transaction in QBO. This way, we can ensure everything is processed, and your accounting stays accurate.
I'll be glad to help you if you have any other questions about managing your transactions in QBO. Have a good day!
