Re: Is there a way to add a 3% CC fee to all invoices so the customer pays the cc fees?
You can do it with a service item called fee and add it t the invoice, but no way to do it automatically
check your state laws, there are some states where surcharging for using a CC is illegal.
For those states that are ok with it, there is still a problem. You are required to put a notice on the store, the check out pages, and on the receipt it must specify the surcharge item and amount, that you surcharge for using a CC and how much, the law says a % is not legal. In addition to that, you are not allowed to surcharge when a debit or prepaid card is used at all. So if you are taking payments on line I don't see how you can know whether or not a card is a prepaid or debit card in advance.
Best option is just raise your prices slightly, or accept that a merchant charge is just a cost of doing business.