N.Y. Comp. Codes R. & Regs. tit. 20, § 158.5
Tax Law, § 658(a)
The Tax Commission may require any person, by notice served upon such person, to make such New York State income tax returns, render such statements, furnish such copies of Federal income tax returns and of Federal audit determinations, or keep such specific records as the Tax Commission may deem necessary to verify whether or not such person is complying or has complied with article 22 of the Tax Law.