The old "pay with cash and save" sign is dead.
If you've seen a small business with a sign that says "Pay with cash and save 4%" — that's the old, non-compliant version of cash discount. It worked like this: one price on the menu, then the terminal tacked on 4% if you paid by card. For years, that's how the industry pitched it.
The problem: that's actually a surcharge in disguise, and the card brands took issue with it. The compliant model — what we set up for every merchant today — is dual pricing. Two prices on the menu. Two prices on the shelf. Two prices on the receipt. The customer sees both before they decide how to pay.
Same economic outcome for the merchant (close to zero in processing fees). But structured the right way: as a discount for cash, not a surcharge for card. That's the difference between getting away with it and being able to defend it in any audit or customer dispute.