I want to pass the costs of processing credit cards onto my customers. How would I create a surcharge for credit card sales only?

In order to do this you would have to setup a surcharge in the system, and you do this by going to back office, then highlight the setup at the top of the screen select general settings and then click on surcharges.   Contact Vanguard Systems for your POS Sales and Service
718-921-6159select-surcharge