How does adding a negative sign (-) to the convenience fee (credit card fee) amount in the invoice help? It only lowers the amount owed by the customer.

If I have an invoice for $8,385.00 and add a line item for the convenience fee the way you suggest, with a negative sign (-$125.77), it only decreases the amount owed by the client. So that now the invoice total reads $8,259.23. So, it looks like I am actually giving the client a credit for the convenience fee and not charging them the fee.

Has QB really still not come up with a way for businesses to charge this fee to clients who choose to pay with a credit card?? It really needs to be something that is done automatically at the time the client pays the invoice if they choose to pay with a credit card. I have no way of knowing how clients will choose to pay when I email them the invoice. I don't know how they chose to pay until I receive their payment.