N.Y. Tax Law § 1303
The city taxable income of a city resident individual shall mean and be the same as his or her New York taxable income as defined in section six hundred eleven of this chapter, except that it shall include (i) the amount contributed to any or all of the following accounts within the charitable gifts trust fund set forth in section ninety-two- gg of the state finance law, to the extent the amount is claimed as an itemized deduction pursuant to section six hundred fifteen of this chapter: the health charitable account established by paragraph (a) of subdivision four of section ninety-two- gg of the state finance law, or the elementary and secondary education charitable account established by paragraph b of subdivision four of section ninety-two- gg of the state finance law. The city taxable income of a city resident estate or trust shall mean and be the same as its New York taxable income as defined in section six hundred eighteen of this chapter.
N.Y. Tax Law § 1303