 In 2009, New York enacted the Metropolitan Commuter Transportation Mobility Tax, a 0.34% levy on payrolls and self-employment earnings in New York City and Nassau, Suffolk, Westchester, Rockland, Orange, Putnam, and Dutchess counties.This tax, known popularly as the "mobility tax," is intended to provide funds for the Metropolitan Transportation Authority, which transports many of the region's commuters.Philadelphia has a 3.924% wage tax on residents and a 3.495% tax on non-residents for wages earned in the city as of August 2013.