Earlier quoted context omitted.
> I don't believe that a merchant is allowed to do this? A federal law was passed over 10 years ago allowing this. https://www.ftc.gov/business-guidance/resources/new-rules-el... > A PCN cannot stop you from offering your customers a discount or another incentive for using a certain method of payment, as long as you offer it to all your customers and disclose the offer clearly and conspicuously. For example, you can…
Amex sued the government about this though. Not sure the outcome but it is more complicated than “government banned banning credit card fees”
https://en.wikipedia.org/wiki/Ohio_v._American_Express_Co.
The FTC site is pretty clear, and they are the regulator.