There are still laws at the state level in the US that make it illegal for a merchant to charge more for credit cards. I lived in Colorado when the law passed t

There are still laws at the state level in the US that make it illegal for a merchant to charge more for credit cards. I lived in Colorado when the law passed there. It was impressive marketing by the credit card companies under the guise of consumer protection. Sucks because most people fell for the propoganda and now it's law. Colo. Rev. Stat. §5-2-212 “(1) Except as otherwise provided in §§24-19.5-103 (3) and 29-11.5-103 (3), C.R.S., no seller or lessor in any sales or lease transaction or any company issuing credit or charge cards may impose a surcharge on a holder who elects to use a credit or charge card in lieu of payment by cash, check, or similar means. A surcharge is any additional amount imposed at the time of the sales or lease transaction by the merchant, seller, or lessor that increases the charge to the buyer or lessee for the privilege of using a credit or charge card. For purposes of this section, charge card includes those cards pursuant to which unpaid balances are payable on demand.”