Tax Law, § 267
A trust mortgagee maintaining an action described at section 652.3(c)(2)(iii) of this Title shall be entitled to the interest at the rate of six per centum per annum, based on the amount of taxes paid by him, until such amount is repaid to such trust mortgagee.
N.Y. Comp. Codes R. & Regs. Tit. 20 § 653.4