Re: How do I add a credit card processing fee to the salesforce template? 3.5% fee for using a credit card. Will that need to be a line item? or is that something I can add
Yes you would have to use a service item for the fee, posting to an income account.
By law, if it is even allowed in your state, it must say something about the fee being what it is.
First thing is to 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.