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(2) The denominator is the federal adjusted gross income from all sources reduced by the net income from the amounts specified in subdivisions a and b of subsection 2. In the case of married individuals filing a joint return, if one spouse is a resident of this state for the entire year and the other spouse is a nonresident for part or all of the tax year, the tax on the joint return must be computed under this subdivision. g. The tax commissioner shall prescribe new rate schedules that apply in lieu of the schedules set forth in subdivisions a through e. The new schedules must be determined by increasing the minimum and maximum dollar amounts for each income bracket for which a tax is imposed by the cost-of-living adjustment for the taxable year as determined by the secretary of the United States treasury for purposes of section 1(f) of the United States Internal Revenue Code of 1954, as amended. For this purpose, the rate applicable to each income bracket may not be changed, and the manner of applying the cost-of-living adjustment must be the same as that used for adjusting the income brackets for federal income tax purposes. h. The tax commissioner shall prescribe an optional simplified method of computing tax under this section that may be used by an individual taxpayer who is not entitled to claim an adjustment under subsection 2 or credit against income tax liability under subsection 7. 2. For purposes of this section, "North Dakota taxable income" means the federal taxable income of an individual, estate, or trust as computed under the Internal Revenue Code of 1986, as amended, adjusted as follows: a. Reduced by interest income from obligations of the United States and income exempt from state income tax under federal statute or United States or North Dakota constitutional provisions. b. Reduced by the portion of a distribution from a qualified investment fund described in section 57-38-01 which is attributable to investments by the qualified investment fund in obligations of the United States, obligations of North Dakota or its political subdivisions, and any other obligation the interest from which is exempt from state income tax under federal statute or United States or North Dakota constitutional provisions. c. Reduced by the amount equal to the earnings that are passed through to a taxpayer in connection with an allocation and apportionment to North Dakota under section 57-38-01.35. d. Reduced by forty percent of: (1) The excess of the taxpayer's net long-term capital gain for the taxable year over the net short-term capital loss for that year, as computed for purposes of the Internal Revenue Code of 1986, as amended. The adjustment provided by this subdivision is allowed only to the extent the net long-term capital gain is allocated to this state. (2) Qualified dividends as defined under Internal Revenue Code section 1(h) (11), added by section 302(a) of the Jobs and Growth Tax Relief Reconciliation Act of 2003 [Pub. L. 108-27; 117 Stat. 752; 2 U.S.C. 963 et seq.], but only if taxed at a federal income tax rate that is lower than the regular federal income tax rates applicable to ordinary income. If, for any taxable year, qualified dividends are taxed at the regular federal income tax rates applicable to ordinary income, the reduction allowed under this subdivision is equal to thirty percent of all dividends included in federal taxable income. The adjustment provided by this subdivision is allowed only to the extent the qualified dividend income is allocated to this state. e. Increased by the amount of a lump sum distribution for which income averaging was elected under section 402 of the Internal Revenue Code of 1986 [26 U.S.C. 402], as amended. This adjustment does not apply if the taxpayer received the lump sum distribution while a nonresident of this state and the distribution is exempt from taxation by this state under federal law. Page No. 33