* (a) No transaction taxable under sections twelve hundred two through twelve hundred four of this article shall be taxed pursuant to this article by any county or by any city located therein, or by both, at an aggregate rate in excess of the highest rate set forth in the applicable subdivision of section twelve hundred one of this article or, in the case of any taxes imposed pursuant to the authority of section twelve hundred ten or twelve hundred eleven of this article (other than taxes imposed by the county of Nassau, Erie, Steuben, Cattaraugus, Suffolk, Oneida, Genesee, Greene, Franklin, Hamilton, Herkimer, Tioga, Orleans, Allegany, Ulster, Albany, Rensselaer, Tompkins, Wyoming, Columbia, Schuyler, Rockland, Chenango, Monroe, Chemung, Seneca, Sullivan, Wayne, Livingston, Schenectady, Montgomery, Delaware, Clinton, Niagara, Yates, Lewis, Essex, Dutchess, Schoharie, Putnam, Chautauqua, Orange, Oswego, Ontario, Jefferson, St. Lawrence, Westchester or Onondaga and by the county of Cortland and the city of Cortland and by the county of Broome and the city of Binghamton and by the county of Cayuga and the city of Auburn and by the county of Otsego and the city of Oneonta and by the county of Madison and the city of Oneida and by the county of Fulton and the city of Gloversville or the city of Johnstown as provided in section twelve hundred ten of this article) at a rate in excess of three percent, except that, in the city of Mount Vernon, in the city of New Rochelle, in the city of Fulton, in the city of Oswego, and in the city of White Plains, the rate may not be in excess of four percent, and in the city of Yonkers, the rate may not be in excess of four and one-half percent, and except that in the city of Poughkeepsie in the county of Dutchess, if such county withdraws from the metropolitan commuter transportation district pursuant to section twelve hundred seventy-nine-b of the public authorities law and if the revenues from a three-eighths percent rate of such tax imposed by such county, pursuant to the authority of section twelve hundred ten of this article, are required by local laws, ordinances or resolutions to be set aside for mass transportation purposes, the rate may not be in excess of three and three-eighths percent. * NB Effective until December 1, 2020 * (a) No transaction taxable under sections twelve hundred two through twelve hundred four of this article shall be taxed pursuant to this article by any county or by any city located therein, or by both, at an aggregate rate in excess of the highest rate set forth in the applicable subdivision of section twelve hundred one of this article or, in the case of any taxes imposed pursuant to the authority of section twelve hundred ten or twelve hundred eleven of this article (other than taxes imposed by the county of Nassau, Erie, Steuben, Cattaraugus, Suffolk, Oneida, Genesee, Greene, Franklin, Hamilton, Herkimer, Tioga, Orleans, Allegany, Ulster, Albany, Rensselaer, Tompkins, Wyoming, Columbia, Schuyler, Rockland, Chenango, Monroe, Chemung, Seneca, Sullivan, Wayne, Livingston, Schenectady, Montgomery, Delaware, Clinton, Niagara, Yates, Lewis, Essex, Dutchess, Schoharie, Putnam, Chautauqua, Orange, Oswego, Ontario, Jefferson, St. Lawrence, Westchester or Onondaga and by the county of Cortland and the city of Cortland and by the county of Broome and the city of Binghamton and by the county of Cayuga and the city of Auburn and by the county of Otsego and the city of Oneonta and by the county of Madison and the city of Oneida and by the county of Fulton and the city of Gloversville or the city of Johnstown as provided in section twelve hundred ten of this article) at a rate in excess of three percent, except that, in the city of Yonkers, in the city of Mount Vernon, in the city of New Rochelle, in the city of Fulton, in the city of Oswego, and in the city of White Plains, the rate may not be in excess of four percent, and except that in the city of Poughkeepsie in the county of Dutchess, if such county withdraws from the metropolitan commuter transportation district pursuant to section twelve hundred seventy-nine-b of the public authorities law and if the revenues from a three-eighths percent rate of such tax imposed by such county, pursuant to the authority of section twelve hundred ten of this article, are required by local laws, ordinances or resolutions to be set aside for mass transportation purposes, the rate may not be in excess of three and three-eighths percent. * NB Effective December 1, 2020

1. (b) If a transaction is taxed by both a county and a city, the rate of tax on such transaction imposed by the county or city, not having prior right thereto pursuant to section twelve hundred twenty-four, shall be deemed to be reduced (or the entire tax eliminated, if necessary) to the extent necessary to comply with the foregoing requirement. A tax imposed by a county upon any transaction, to the extent that it would require a reduction in any tax rate imposed thereon by a city, shall not become effective in respect to any transaction taxed by such city (or in respect of other similar transactions outside of the city which, if occurring in such city, would be subject to such city tax) before the commencement of the city's next succeeding fiscal year and then only if the county shall have given notice to such city of its imposition of a tax on such transaction at least six months prior to the commencement of such fiscal year, provided however that the local legislative body of such city may waive the requirement of such notice and the postponement of the effective date of such tax. A city tax upon any transaction, to the extent that it would require a reduction in any tax rate imposed by a county thereon, shall not become effective in respect of any transaction taxed by such county before the commencement of the county's next succeeding fiscal year and then only if the city shall have given notice to such county of its imposition of a tax on such transaction at least six months prior to the commencement of such fiscal year, provided, however, that the local legislative body of such county may waive the requirement of such notice and postponement of the effective date of such tax. However, whether or not the six months' notice requirement provided in this section has been waived, a tax imposed pursuant to the authority of section twelve hundred ten or twelve hundred eleven shall still be subject to the requirements provided for in the first three sentences of subdivision (d) of such sections and in subdivision (e) of such sections.