- Go to Settings > Services & Fees
2. rename the Tax area "Credit Card processing fee" and add it in there.
3. add a note to your invoice that says "if you don't pay by credit card disregard the fee" (Settings > Payments)
4. If they pay you by cash or check, when you go to add the payment to the Fees area on the inspection details page, you'd delete the tax off the invoice.