Can New York state general businesses surcharge credit cards? No, it’s illegal. The US Supreme Court recently ruled on credit card surcharge rules for class action lawsuit Expressions Hair Design, et al., Petitioners v. Eric T. Schneiderman, Attorney General of New York, et al. Judgement issued May 1 2017, sending the case back to lower court.

US Supreme Court History of case
https://www.supremecourt.gov/search.aspx?filename=/docketfiles/15-1391.htm

EXPRESSIONS HAIR DESIGN v. SCHNEIDERMAN ( )
808 F. 3d 118, vacated and remanded. https://www.law.cornell.edu/supremecourt/text/15-1391

Expressions Hair Design v. Schneiderman, NYS Attorney General oral arugments
https://lawaspect.com/case-expressions-hair-design-v-schneiderman/

EXPRESSIONS HAIR DESIGN LLC v. SCHNEIDERMAN, Decided: September 29, 2015
http://caselaw.findlaw.com/us-2nd-circuit/1714180.html