Really? There's a chain here in MO that offers a 4 cent/gallon discount if you pay cash. No problems with law or companies as far as I can tell.
Are they an oil company franchisee, or are they a convenience store chain? I’m pretty sure Shell doesn’t want Shell stations offering a reason for their customers not to use their Shell cards.
It is a little bit of a semantics issue. Per Mastercard:
“Surcharging credit card transactions is strictly prohibited by the card associations,* MasterCard® , and Visa® . A merchant may, however, offer discounts for cash transactions provided it is clearly disclosed to cardholders as a cash discount and the cash price is presented as a discount from the standard price available for all other means of payment.
“*MasterCard® modified its regulations to allow the IRS to assess a 2% convenience fee. No other industries were part of that modification. Visa® is not part of the IRS program and has no exceptions to surcharge prohibition.”