Hello, mwagner17. The option to let the customer pay the credit card fee along with their payment is unavailable. However, you can still charge your customer for the processing fee by manually adding it to the invoice as a service item.

It's always a good idea to let the customer know about this by including a note in the default email message you send along with invoices.
By the way, if you're taking ACH payments, you can have the customer pay the convenience fee automatically.
Just click the Reply button if you have other QuickBooks-related concerns. I'll be happy to help!