(a)General. —In determining taxable income under this chapter, in lieu of the standard deduction provided by § 1108 of this title, a resident individual may elect to deduct the sum of the itemized deductions claimed on the federal income tax return as shall be permitted under the laws of the United States as the same are or shall become effective for any taxable year in determining the federal taxable income, or, if the person does not itemize deductions or elects the credit for foreign taxes paid on the federal return, the person may deduct the sum of the itemized deductions to which the person would have been entitled had the person itemized the deductions (including the deduction for foreign taxes paid) on the federal return, as follows:
(1)Reduced by all of the following:
a. The amo
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(a)General. —In determining taxable income under this chapter, in lieu of the standard deduction provided by § 1108 of this title, a resident individual may elect to deduct the sum of the itemized deductions claimed on the federal income tax return as shall be permitted under the laws of the United States as the same are or shall become effective for any taxable year in determining the federal taxable income, or, if the person does not itemize deductions or elects the credit for foreign taxes paid on the federal return, the person may deduct the sum of the itemized deductions to which the person would have been entitled had the person itemized the deductions (including the deduction for foreign taxes paid) on the federal return, as follows:
(1) Reduced by all of the following:
a. The amount thereof representing income taxes imposed by this State.
b. The amount of any income tax imposed on the person for the taxable year by another state of the United States or a political subdivision thereof or the District of Columbia on income derived from sources therein if the person elected to take such amount as a credit in accordance with § 1111(a) of this title.
c. The amount of medical expenses paid by the donor associated with human organ or bone marrow donation, in which the donor claimed a tax credit for such medical expenses under § 1118 of this title.
(2) Increased by all of the following:
a. An amount equal to the excess of the state employee automobile mileage reimbursement allowance over the standard mileage rate allowed as a charitable deduction for federal income tax purposes for unreimbursed automobile transportation expense incurred by an individual while serving as a volunteer for a charitable organization as defined in § 170(c), Internal Revenue Code, 26 U.S.C.§ 170(c).
b. In the case of a self-employed individual, the amount paid during the taxable year for insurance which constitutes medical care for the taxpayer, the taxpayer’s spouse and dependents, less the amount allowed the taxpayer as a deduction pursuant to 26 U.S.C. § 162(l) or successor provision of the Internal Revenue Code. For purposes of this paragraph (a)(2)b. “self-employed taxpayer” shall mean a resident individual whose gross income is more than ½ derived from a trade, business or profession and not derived as an employee. Income in the nature of interest, dividends or other investment income shall not constitute self-employment income. No self-employed taxpayer whose total cost of insurance for health care for the taxpayer, spouse and dependents exceeds the gross income from the trade, business or profession shall be entitled to the deduction under this paragraph (a)(2)b.
c. For taxable years beginning after December 31, 1986, and before January 1, 1988, an amount equal to 12% of itemized deductions determined under this section without regard to this paragraph (a)(2)c.
d. For tax years beginning on or after January 1, 2024, for a resident individual who is an active member of a labor organization during the tax year, an amount equal to the annual cost to the resident individual to maintain membership in the labor organization, not to exceed $500, except that an individual is not eligible for the increase under this paragraph (a)(2)d. as follows:
1. If the individual has taken a deduction on their federal income tax return for any cost to maintain membership in a labor organization.
2. To the extent the payments are not deductible under applicable federal law, for any amounts paid to or through a labor organization for any of the following:
A. For employee benefits, pension contributions, or similar benefits or compensation.
B. That were used in connection with lobbying or political expenditures, or settlement or investigatory costs or assessments of a government entity.
(b)Spouses. —Spouses, both of whom are required to file returns under this chapter, shall be allowed to itemize their deductions only if both elect to do so.
(c) For purposes of subsection (a) of this section, the amount of itemized deductions representing income taxes imposed by: (i) this State, or (ii) another state of the United States or a political subdivision thereof or the District of Columbia on income derived from sources therein if a resident elected to take such amount as a credit in accordance with § 1111(a) of this title shall be deemed to equal the amount of such taxes reduced by the amount of such taxes multiplied by the percentage determined under § 68(a) of the Internal Revenue Code [26 U.S.C. § 68(a)] or successor provision thereof.