Yes, there is, Leslie.

At this time, you can include the processing or credit fee amount on the invoice. I'll guide you on how.

1. Open your QuickBooks Self-Employed (QBSE) account.
2. Click on Invoices at the left pane, then tap on Create invoice.
3. Enter the transaction details. 
4. Add the credit card fee on the next line item.
5. Input the amount.
6. Save or send the invoice to your customer.
7. If you've already recorded the invoice, you can edit it and input the fees from there.

Once done,  your customers will be able to receive the invoices with the processing fee.

I've added this screenshot for your visual reference.

If you wish to add sales tax to your invoices in the future, you can use this article as your reference: Manually track sales tax in QuickBooks Self-Employed.

If you have any other follow-up questions about invoices and credit card payments, let me know by adding a comment below. I'm more than happy to help. Keep safe!