New York Laws
Article 29-A - Unauthorized or Improper Use of Credit Cards and Debit Cards
518 - Credit Card Surcharge Prohibited.

ยง 518. Credit card surcharge prohibited. No seller in any sales
transaction may impose a surcharge on a holder who elects to use a
credit card in lieu of payment by cash, check, or similar means.

Any seller who violates the provisions of this section shall be guilty
of a misdemeanor punishable by a fine not to exceed five hundred dollars
or a term of imprisonment up to one year, or both.