If you have a traditional merchant account, there's no way you know what the fee will be beforehand anyway. Passing on the actual fee to the customer is impossi

If you have a traditional merchant account, there's no way you know what the fee will be beforehand anyway. Passing on the actual fee to the customer is impossible. The interchange rate for a basic card is different from the interchange rate for a rewards card, for a hotel card, for a signature card, for a business card, etc. There are hundreds of different classifications and no way to know which a card is until after you've charged it. The fee tables are 100+ pages long. http://ctlr.msu.edu/download/cashiers/VisaICApr12.pdf http://ctlr.msu.edu/download/cashiers/VisaICApr12.pdf http://www.mastercard.com/us/merchant/pdf/MasterCard_Interchange_Rates_and_Criteria.pdf http://www.mastercard.com/us/merchant/pdf/MasterCard_Interch... If you're not dealing with a merchant account, but a 3rd party processor, then you're almost always paying a flat fee regardless of card type. So why would you need to pass on different rates?