15-30-2119. Net operating loss -- computation. A Montana net operating loss must be determined in accordance with section 172 of the Internal Revenue Code of 1986 (26 U.S.C. 172) or as that section may be labeled or amended except that the net operating loss determined under section 172(c) of the Internal Revenue Code (26 U.S.C. 172(c)) means taxable income, as defined in 15-30-2101, computed with the modifications specified in section 172(d) of the Internal Revenue Code (26 U.S.C. 172(d)) as they relate to items provided for in this chapter.