Good evening, user12341234.

I appreciate you turning to the QuickBooks Community for support!

QuickBooks Online Provides the option to create and add a service fee to your customers invoices in order to make up for the credit card fees when using the Payments feature.  Here's how;

1. Go to "Settings" and select "Products and services"

2. Hit "New", then select "Service"

3. Enter a service name 

4. From the "Category"  dropdown, select the category that best describes the fee.

6. Hit "Save and close".

Note: If you don't charge a standard fee, you can change the fee amount on the invoice.

You'll now be able to add the service fee on the invoice.

If you have any other questions, feel free to reach out here.