Thanks for getting back to us, @dialedin.

Let's create a new service item for your credit card payment and add it to your invoice.

Here's how:

1. Go to Sales, then select Products and Services.
2. Click New.
3. Select Service.
4. Enter Credit Card payment under the Name section.
5. Hit Save and close.

Here's an article for your reference: How to Create and Use a Products and Services List

Then, you can now create an invoice with the credit card payment. Let me guide you how:

1. Click the Plus (+) icon.
2. Select Invoice.
3. Choose the Customer's name.
4. Under the Product/Service column, select the commission item on the first line and enter the amount.
5. On the second line, select the Credit Card payment and enter the amount as a whole number, not in percentage.
6. Click Save and close.

Also, I still recommend seeking help from your accountant. He/she could guide you which option to take based on your recording practice and business needs.

Please keep in touch with us here should you need any further assistance. We're always here to help.