N.Y. GCM Law § 62

§ 62. Additional tax on transportation corporations and associations.\nEvery corporation, joint-stock company or association formed for or\nprincipally engaged in the conduct of aviation, steamboat, ferry (except\na ferry company operating between any of the boroughs of the city under\na lease granted by the city), or navigation business or formed for or\nprincipally engaged in the conduct of two or more of such businesses,\nexcept a corporation, joint-stock company or association subject to\ntaxation under a local law of the city, imposed on utilities and vendors\nof utility services, shall pay for the privilege of carrying on its\nbusiness in the city, a tax which shall be equal to five-tenths of one\nper centum upon its gross earnings from all sources within the city,\nexcluding earnings derived from business of a character other than\nwholly intra-city. Provided, however, gross earnings from transportation\nbusiness both originating and terminating within the city and traversing\nboth the city and any other city, any state or states or any country\nshall be subject to the tax imposed by this section and such earnings\nshall be allocated to the city in the same ratio that the mileage within\nthe city bears to the total mileage of such business.\n