Thanks for your immediate response, @Concert Audio.

Let me provide further clarification on how you can let your clients cover the credit card fees when paying your invoices in QuickBooks Self-Employed (QBSE).

For the time being, the option to automatically add the credit card fees to your invoices is unavailable in QBSE. You'll need to enter or include them manually as a workaround so your clients can cover them for you. Here's 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.

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

Also, you can collect sales taxes for the products and services you sell in QBSE. However, you're unable to do it automatically. With this, you may want to check out this article as your reference on how sales tax works in QBSE: Manually track sales tax in QuickBooks Self-Employed.

If you have other concerns about managing invoices and receiving payments in QBSE, please don't hesitate to let me know in the comments below. I'm always ready to help. Take care, and I wish you continued success, @Concert Audio.