NY Tax L § 659 (2021)
2021 New York Laws TAX - Tax Article 22 - Personal Income Tax Part 4 - Returns and Payment of Tax 659 - Report of Federal Changes, Corrections or Disallowances.

§ 659. Report of federal changes, corrections or disallowances. If the   amount  of  a taxpayer's federal taxable income, total taxable amount or   ordinary income portion of a lump sum distribution or includible gain of   a trust reported on his federal income tax return for any taxable  year,   or  the  amount  of  a  taxpayer's  earned  income  credit or credit for   employment-related expenses set forth on such return, or the  amount  of   any  federal  foreign tax credit affecting the calculation of the credit   for Canadian provincial taxes under section six hundred  twenty  or  six   hundred  twenty-A  of  this article, or the amount of any claim of right   adjustment, is changed  or  corrected  by  the  United  States  internal   revenue  service  or  other  competent  authority  or as the result of a   renegotiation of a contract or subcontract with the  United  States,  or   the amount an employer is required to deduct and withhold from wages for   federal  income tax withholding purposes is changed or corrected by such   service or authority or if a taxpayer's claim for credit  or  refund  of   federal  income  tax  is disallowed in whole or in part, the taxpayer or   employer shall report such change or correction or  disallowance  within   ninety  days  after  the final determination of such change, correction,   renegotiation  or  disallowance,  or  as  otherwise  required   by   the   commissioner,  and  shall  concede the accuracy of such determination or   state wherein it is erroneous. The allowance of  a  tentative  carryback   adjustment based upon a net operating loss carryback pursuant to section   sixty-four  hundred eleven of the internal revenue code shall be treated   as a final determination for purposes  of  this  section.  Any  taxpayer   filing  an  amended federal income tax return and any employer filing an   amended federal return of income tax withheld  shall  also  file  within   ninety  days  thereafter an amended return under this article, and shall   give such information as the commissioner may require. The  commissioner   may  by regulation prescribe such exceptions to the requirements of this   section as he or she deems appropriate. For purposes  of  this  section,   (i)  the  term  "taxpayer" shall include a partnership having a resident   partner or having any income  derived  from  New  York  sources,  and  a   corporation  with  respect  to  which  the  taxable year of such change,   correction, disallowance or amendment is a year with  respect  to  which   the election provided for in subsection (a) of section six hundred sixty   of  this  article  is  in  effect, and (ii) the term "federal income tax   return" shall include the returns of income required under sections  six   thousand  thirty-one  and  six  thousand  thirty-seven  of  the internal   revenue code. In the case of such a corporation, such report shall  also   include  any  change  or correction of the taxes described in paragraphs   two and three of subsection (f) of section thirteen hundred sixty-six of   the internal  revenue  code.  Reports  made  under  this  section  by  a   partnership  or  corporation shall indicate the portion of the change in   each item of income, gain, loss or deduction (and,  in  the  case  of  a   corporation, of each change in, or disallowance of a claim for credit or   refund  of,  a  tax  referred to in the preceding sentence) allocable to   each partner  or  shareholder  and  shall  set  forth  such  identifying   information  with  respect  to  such  partner  or  shareholder as may be   prescribed by the commissioner.