2015 New York Laws
TAX - Tax
Article 22 - PERSONAL INCOME TAX
Part 3 - (631 - 639) NONRESIDENTS AND PART-YEAR RESIDENTS
633 - New York source income of a nonresident estate or trust.

  633.  New  York source income of a nonresident estate or trust. (a)
  General. The New York source income of a  nonresident  estate  or  trust
  shall be the sum of the following:
(1)  The  net  amount  of  items  of  income, gain, loss and deduction
  entering  into  federal  adjusted  gross  income,  as  determined  under
  paragraph  four  of  subsection  (e) of section six hundred one, derived
  from or connected with New York sources. Such  determination  of  source
  shall  be  made  in  accordance with the applicable rules of section six
  hundred thirty-one as in the case of a nonresident individual.
(2) The portion of the modifications described in section six  hundred
  eighteen which relate to income derived from New York sources other than
  that  portion  of  the modification provided in subsection three thereof
  which relates to section six hundred fifteen.
(b) Special New York source rules. Deductions with respect to  capital
  losses,  passive activity losses and net operating losses shall be based
  solely on income, gains, losses and deductions derived from or connected
  with New York sources, under regulations  of  the  tax  commission,  but
  otherwise  determined  in  the  same manner as the corresponding federal
  deductions.