[getsat]

If I recall correctly, CC companies do not allow businesses to charge an extra fee to take card, but businesses are not forbidden from raising the base price and offering a cash discount. During my time in the US, I saw many gas stations showing a "CASH PRICE" next to the regular price.

[barake]

I can confirm Visa does not allow you to charge a premium/pass on fees but a discount is allowed for cash and check. MasterCard, American Express and Discover let you charge any sort of fee basically. My employer does not accept Visa due to the terms (and it's really annoying - Visa is what all the banks in town issue).