The unincorporated business deductions of an unincorporated business means the items of loss and deduction directly connected with or incurred in the conduct of the business, which are allowable for federal income tax purposes for the taxable year (including losses and deductions connected with any property employed in the business), with the following modifications:
(1) A deduction shall be allowed for charitable contributions of the unincorporated business, to the extent that such contributions would be deductible for federal income tax purposes if made by a corporation, but not in excess of five per centum of the amount by which the unincorporated business gross income exceeds the unincorporated business deductions computed without the benefit of any deduction for charitable contributions.(2) A deduction shall be allowed for net operating losses incurred by the unincorporated business in an amount computed in the same manner as the net operating loss deduction which would be allowable for the taxable year for federal income tax purposes if the unincorporated business were an individual taxpayer (but determined solely by reference to the unincorporated business gross income and unincorporated business deductions, allocated to the city, of the unincorporated business). Such deduction shall not include any net operating loss sustained during any taxable year ending prior to January first, nineteen hundred sixty-six and for the purposes of this paragraph net operating losses shall be determined without regard to any deductions allowed pursuant to subsection (b) of section one hundred eight and any net operating loss for a taxable year beginning in nineteen hundred eighty-one shall be computed without regard to the deduction allowed with respect to recovery property under section one hundred sixty-eight of the internal revenue code; in lieu of such deduction, a taxpayer shall be allowed for such taxable year with respect to such property the depreciation deduction allowable under section one hundred sixty-seven of such code as such section was in full force and effect on December thirty-first, nineteen hundred eighty.(3) No deduction shall be allowed (except as provided in section one hundred eight) for amounts paid or incurred to a proprietor or partner for services or for use of capital.(4) No deduction shall be allowed for income taxes imposed by the city, this state or any other taxing jurisdiction.(5) No deduction shall be allowed for (A) interest on indebtedness incurred or continued to purchase or carry obligations or securities the income from which is exempt from tax under this title; (B) expenses paid or incurred for the production or collection of such income or the management, conservation or maintenance of property held for the production of such income; or (C) the amortizable bond premium on any bond the interest income from which is so exempt.(6) No deduction shall be allowed in respect of the excess of net long-term capital gain over net short-term capital loss, but capital losses incurred in the unincorporated business shall be treated as ordinary losses and shall be allowed in full.(7) In the case of a taxpayer who has exercised the election permitted by subdivision (b) of section one hundred eight, no deduction shall be allowed for expenditures with reference to the property to which such election relates, or for depreciation of such property, except as permitted by said subdivision.(8) A deduction shall be allowed for (A) interest on indebtedness incurred or continued to purchase or carry obligations or securities the income from which is subject to tax under this title but exempt from federal income tax; (B) ordinary and necessary expenses paid or incurred during the taxable year for the production or collection of such income or the management, conservation or maintenance of property held for the production of such income; and (C) the amortizable bond premium for the taxable year on any bond the interest on which is subject to tax under this title but exempt from federal income tax.(9) At the election of the taxpayer, a deduction shall be allowed for expenditures paid or incurred during the taxable year for the construction, reconstruction, erection or improvement of industrial waste treatment facilities and air pollution control facilities.(A)(i) The term "industrial waste treatment facilities" shall mean facilities for the treatment, neutralization or stabilization of industrial waste (as the term "industrial waste" is defined in section twelve hundred two of the state public health law) from a point immediately preceding the point of such treatment, neutralization or stabilization to the point of disposal, including the necessary pumping and transmitting facilities, but excluding such facilities installed for the primary purpose of salvaging materials which are usable in the manufacturing process or are marketable.(ii) The term "air pollution control facilities" shall mean facilities which remove, reduce, or render less noxious air contaminants emitted from an air contamination source (as the terms "air contaminant" and "air contamination source" are defined in section twelve hundred sixty-seven of the state public health law) from a point immediately preceding the point of such removal, reduction or rendering to the point of discharge of air, meeting emission standards as established by the air pollution control board, but excluding such facilities installed for the primary purpose of salvaging materials which are usable in the manufacturing process or are marketable and excluding those facilities which rely for their efficacy on dilution, dispersion or assimilation of air contaminants in the ambient air after emission.(B) However, such deduction shall be allowed only(i) with respect to tangible property which is depreciable, pursuant to section one hundred sixty-seven of the internal revenue code, having a situs in the city and used in the taxpayer's trade or business, the construction, reconstruction, erection or improvement of which, in the case of industrial waste treatment facilities, is initiated on or after January first, nineteen hundred sixty-six, and only for expenditures paid or incurred prior to January first, nineteen hundred seventy-two, or which; in the case of air pollution control facilities, is initiated on or after January first, nineteen hundred sixty-six, and(ii) on condition that such facilities have been certified by the state commissioner of health or his designated representative, pursuant to the state public health law, as complying with the provisions of the state public health law, the state sanitary code and regulations, permits or orders promulgated pursuant thereto, and(iii) on condition that for the taxable year and all succeeding taxable years, no deduction for such expenditures or for depreciation of the same property allowed for federal income tax purposes shall be allowed under this title, except to the extent that the basis of the property may be attributable to factors other than such expenditures, or in case a deduction is allowable pursuant to this paragraph nine, for only a part of such expenditures, on condition that any deduction allowed for federal income tax purposes for such expenditures or for depreciation of the same property be proportionately reduced in computing unincorporated business deductions for the taxable year and all succeeding taxable years, and(iv) where the election provided for in subdivision (b) of section one hundred eight has not been exercised in respect to the same property.(C)(i) If expenditures in respect to an industrial waste treatment facility or an air pollution control facility have been deducted as provided herein and if within ten years from the end of the taxable year in which such deduction was allowed such property or any part thereof is used for the primary purpose of salvaging materials which are usable in the manufacturing process or are marketable, the taxpayer shall report such change of use in its return for the first taxable year during which it occurs, and the director of finance may recompute the tax for the year or years for which such deduction was allowed and any carryback or carryover year, and may assess any additional tax resulting from such recomputation within the time fixed by paragraph eight of subdivision (c) of section one hundred thirty-one.(ii) If a deduction is allowed as herein provided for expenditures paid or incurred during any taxable year on the basis of a temporary certificate of compliance issued pursuant to the state public health law, and if the taxpayer fails to obtain a permanent certificate of compliance upon completion of the facilities with respect to which such temporary certificate was issued, the taxpayer shall report such failure in its report for the taxable year during which such facilities are completed, and the director of finance may recompute the tax for the year or years for which such deduction was allowed and any carryback or carryover year, and may assess any additional tax resulting from such recomputation within the time fixed by paragraph eight of subdivision (c) of section one hundred thirty-one.(D) In any taxable year when property is sold or otherwise disposed of, with respect to which a deduction has been allowed pursuant to this paragraph nine, such deduction shall be disregarded in computing gain or loss, and the gain or loss on the sale or other disposition of such property shall be the gain or loss allowable for federal income tax purposes for such taxable year.(10) For taxable years beginning after December thirty-first, nineteen hundred eighty-one, except with respect to property which is a qualified mass commuting vehicle described in subparagraph (D) of paragraph eight of subsection (f) of section one hundred sixty-eight of the internal revenue code (relating to qualified mass commuting vehicles), a deduction shall be allowed for any amount which the taxpayer could have excluded for purposes of this title had it not made the election provided for in such paragraph eight as it was in effect for agreements entered into prior to January first, nineteen hundred eighty-four.(11) For taxable years beginning after December thirty-first, nineteen hundred eighty-one, except with respect to property which is a qualified mass commuting vehicle described in subparagraph (D) of paragraph eight of subsection (f) of section one hundred sixty-eight of the internal revenue code (relating to qualified mass commuting vehicles), no deduction shall be allowed for any amount deductible for federal income tax purposes solely as a result of an election made pursuant to the provisions of such paragraph eight as it was in effect for agreements entered into prior to January first, nineteen hundred eighty-four.(12) For taxable years beginning after December thirty-first, nineteen hundred eighty-one, except with respect to recovery property subject to the provisions of section two hundred eighty-F of the internal revenue code and recovery property placed in service in this state in taxable years beginning after December thirty-first, nineteen hundred eighty-four, no deduction shall be allowed for the amount allowable as a deduction under section one hundred sixty-eight of the internal revenue code.(13) For taxable years beginning after December thirty-first, nineteen hundred eighty-one, except with respect to recovery property subject to the provisions of section two hundred eighty-F of the internal revenue code and recovery property placed in service in this state in taxable years beginning after December thirty-first, nineteen hundred eighty-four, and provided a deduction has not been disallowed pursuant to subdivision eleven of this section, a taxpayer shall be allowed with respect to recovery property the depreciation deduction allowable under section one hundred sixty-seven of the internal revenue code as such section would have applied to property placed in service on December thirty-first, nineteen hundred eighty.(14) For taxable years ending after September 10, 2001, in the case of qualified property described in paragraph 2 of subsection k of section 168 of the internal revenue code, other than qualified resurgence zone property described in subdivision 16 of this section, and other than qualified New York Liberty Zone property described in paragraph 2 of subsection b of section 1400L of the internal revenue code (without regard to clause (i) of subparagraph (C) of such paragraph), no deduction shall be allowed for the amount allowable as a deduction under section 167 of the internal revenue code.(15) For taxable years ending after September 10, 2001, in the case of qualified property described in paragraph 2 of subsection k of section 168 of the internal revenue code, other than qualified resurgence zone property described in subdivision 16 of this section, and other than qualified New York Liberty Zone property described in paragraph 2 of subsection b of section 1400L of the internal revenue code (without regard to clause (i) of subparagraph (C) of such paragraph), a deduction shall be allowed with respect to such property equal to the depreciation deduction allowable under section 167 of the internal revenue code as such section would have applied to such property had it been acquired by the taxpayer on September 10, 2001.(16) For purposes of subdivisions 14 and 15 of this section, qualified resurgence zone property shall mean qualified property described in paragraph 2 of subsection k of section 168 of the internal revenue code substantially all of the use of which is in the resurgence zone, as defined below, and is in the active conduct of a trade or business by the taxpayer in such zone, and the original use of which in the resurgence zone commences with the taxpayer after September 10, 2001. The resurgence zone shall mean the area of New York county bounded on the south by a line running from the intersection of the Hudson River with the Holland Tunnel, and running thence east to Canal Street, then running along the centerline of Canal Street to the intersection of the Bowery and Canal Street, running thence in a southeasterly direction diagonally across Manhattan Bridge Plaza, to the Manhattan Bridge and thence along the centerline of the Manhattan Bridge to the point where the centerline of the Manhattan Bridge would intersect with the easterly bank of the East River, and bounded on the north by a line running from the intersection of the Hudson River with the Holland Tunnel and running thence north along West Avenue to the intersection of Clarkson Street then running east along the centerline of Clarkson Street to the intersection of Washington Avenue, then running south along the centerline of Washington Avenue to the intersection of West Houston Street, then east along the centerline of West Houston Street, then at the intersection of the Avenue of the Americas continuing east along the centerline of East Houston Street to the easterly bank of the East River.N.Y. General City Model Law § 106