§ 187. Credit for special additional mortgage recording tax. 1. A taxpayer shall be allowed a credit, to be credited against the taxes imposed by this article, other than the taxes and fees imposed by sections one hundred eighty-six-a and one hundred eighty-six-e of this chapter. The amount of the credit shall be the amount of the special additional mortgage recording tax paid by the taxpayer pursuant to the provisions of subdivision one-a of section two hundred fifty-three of this chapter on mortgages recorded on and after January first, nineteen hundred seventy-nine. Provided, however, that the amount of such credit allowable against the tax imposed by section one hundred eighty-four of this chapter shall be the excess of the amount of such special additional mortgage recording tax paid over the amount of any credit allowed by this section against the tax imposed by section one hundred eighty-three of this chapter. Provided further, however, no credit shall be allowed with respect to a mortgage of real property principally improved or to be improved by one or more structures containing in the aggregate not more than six residential dwelling units, each dwelling unit having its own separate cooking facilities, where the real property is located in one or more of the counties comprising the metropolitan commuter transportation district and where the mortgage is recorded on or after May first, nineteen hundred eighty-seven. Provided further, however, no credit shall be allowed with respect to a mortgage of real property principally improved or to be improved by one or more structures containing in the aggregate not more than six residential dwelling units, each dwelling unit having its own separate cooking facilities, where the real property is located in the county of Erie and where the mortgage is recorded on or after May first, nineteen hundred eighty-seven.

2. In no event shall the credit herein provided for be allowed in an amount which will reduce the tax payable to less than the applicable minimum tax fixed by section one hundred eighty-three or former section one hundred eighty-six. If, however, the amount of credit allowable under this section for any taxable year reduces the tax to such amount, any amount of credit not deductible in such taxable year may be carried over to the following year or years and may be deducted from the taxpayer's tax for such year or years.