Except as otherwise expressly provided or clearly appearing from the context, any term used in this chapter that is not otherwise defined in this section has the same meaning as when used in a comparable context in the laws of the United States relating to federal income taxes or if not used in a comparable context in those laws, has the same meaning as in section 5733.40 of the Revised Code. Any reference in this chapter to the Internal Revenue Code includes other laws of the United States relating to federal income taxes.
(A) "Adjusted gross income" or "Ohio adjusted gross income" means federal adjusted gross income, as defined and used in the Internal Revenue Code, adjusted as provided in this section:(1) Add interest or dividends on obligations or securities of any state or of any political subdivision or authority of any state, other than this state and its subdivisions and authorities.(2) Add interest or dividends on obligations of any authority, commission, instrumentality, territory, or possession of the United States to the extent that the interest or dividends are exempt from federal income taxes but not from state income taxes.(3) Deduct interest or dividends on obligations of the United States and its territories and possessions or of any authority, commission, or instrumentality of the United States to the extent that the interest or dividends are included in federal adjusted gross income but exempt from state income taxes under the laws of the United States.(4) Deduct disability and survivor's benefits to the extent included in federal adjusted gross income.(5) Deduct the following, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income: (a) Benefits under Title II of the Social Security Act and tier1railroad retirement;(b) Railroad retirement benefits, other than tier 1 railroad retirement benefits, to the extent such amounts are exempt from state taxation under federal law.(6) Deduct the amount of wages and salaries, if any, not otherwise allowable as a deduction but that would have been allowable as a deduction in computing federal adjusted gross income for the taxable year, had the work opportunity tax credit allowed and determined under sections 38, 51, and 52 of the Internal Revenue Code not been in effect.(7) Deduct any interest or interest equivalent on public obligations and purchase obligations to the extent that the interest or interest equivalent is included in federal adjusted gross income.(8) Add any loss or deduct any gain resulting from the sale, exchange, or other disposition of public obligations to the extent that the loss has been deducted or the gain has been included in computing federal adjusted gross income.(9) Deduct or add amounts, as provided under section 5747.70 of the Revised Code, related to contributions made to or tuition units purchased under a qualified tuition program established pursuant to section 529 of the Internal Revenue Code.(10)(a) Deduct, to the extent not otherwise allowable as a deduction or exclusion in computing federal or Ohio adjusted gross income for the taxable year, the amount the taxpayer paid during the taxable year for medical care insurance and qualified long-term care insurance for the taxpayer, the taxpayer's spouse, and dependents. No deduction for medical care insurance under division (A)(10)(a) of this section shall be allowed either to any taxpayer who is eligible to participate in any subsidized health plan maintained by any employer of the taxpayer or of the taxpayer's spouse, or to any taxpayer who is entitled to, or on application would be entitled to, benefits under part A of Title XVIII of the "Social Security Act," 49 Stat. 620 (1935), 42 U.S.C. 301, as amended. For the purposes of division (A)(10)(a) of this section, "subsidized health plan" means a health plan for which the employer pays any portion of the plan's cost. The deduction allowed under division (A)(10)(a) of this section shall be the net of any related premium refunds, related premium reimbursements, or related insurance premium dividends received during the taxable year.(b) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income during the taxable year, the amount the taxpayer paid during the taxable year, not compensated for by any insurance or otherwise, for medical care of the taxpayer, the taxpayer's spouse, and dependents, to the extent the expenses exceed seven and one-half per cent of the taxpayer's federal adjusted gross income.(c) For purposes of division (A)(10) of this section, "medical care" has the meaning given in section 213 of the Internal Revenue Code, subject to the special rules, limitations, and exclusions set forth therein, and "qualified long-term care" has the same meaning given in section 7702B(c) of the Internal Revenue Code. Solely for purposes of division (A)(10)(a) of this section, "dependent" includes a person who otherwise would be a "qualifying relative" and thus a "dependent" under section 152 of the Internal Revenue Code but for the fact that the person fails to meet the income and support limitations under section 152(d)(1)(B) and (C) of the Internal Revenue Code.(11)(a) Deduct any amount included in federal adjusted gross income solely because the amount represents a reimbursement or refund of expenses that in any year the taxpayer had deducted as an itemized deduction pursuant to section 63 of the Internal Revenue Code and applicable United States department of the treasury regulations. The deduction otherwise allowed under division (A)(11)(a) of this section shall be reduced to the extent the reimbursement is attributable to an amount the taxpayer deducted under this section in any taxable year.(b) Add any amount not otherwise included in Ohio adjusted gross income for any taxable year to the extent that the amount is attributable to the recovery during the taxable year of any amount deducted or excluded in computing federal or Ohio adjusted gross income in any taxable year.(12) Deduct any portion of the deduction described in section 1341(a)(2) of the Internal Revenue Code, for repaying previously reported income received under a claim of right, that meets both of the following requirements: (a) It is allowable for repayment of an item that was included in the taxpayer's adjusted gross income for a prior taxable year and did not qualify for a credit under division (A) or (B) of section 5747.05 of the Revised Code for that year;(b) It does not otherwise reduce the taxpayer's adjusted gross income for the current or any other taxable year.(13) Deduct an amount equal to the deposits made to, and net investment earnings of, a medical savings account during the taxable year, in accordance with section 3924.66 of the Revised Code. The deduction allowed by division (A)(13) of this section does not apply to medical savings account deposits and earnings otherwise deducted or excluded for the current or any other taxable year from the taxpayer's federal adjusted gross income.(14)(a) Add an amount equal to the funds withdrawn from a medical savings account during the taxable year, and the net investment earnings on those funds, when the funds withdrawn were used for any purpose other than to reimburse an account holder for, or to pay, eligible medical expenses, in accordance with section 3924.66 of the Revised Code;(b) Add the amounts distributed from a medical savings account under division (A)(2) of section 3924.68 of the Revised Code during the taxable year.(15) Add any amount claimed as a credit under section 5747.059 of the Revised Code to the extent that such amount satisfies either of the following: (a) The amount was deducted or excluded from the computation of the taxpayer's federal adjusted gross income as required to be reported for the taxpayer's taxable year under the Internal Revenue Code;(b) The amount resulted in a reduction of the taxpayer's federal adjusted gross income as required to be reported for any of the taxpayer's taxable years under the Internal Revenue Code.(16) Deduct the amount contributed by the taxpayer to an individual development account program established by a county department of job and family services pursuant to sections 329.11 to 329.14 of the Revised Code for the purpose of matching funds deposited by program participants. On request of the tax commissioner, the taxpayer shall provide any information that, in the tax commissioner's opinion, is necessary to establish the amount deducted under division (A)(16) of this section.(17)(a)(i) Subject to divisions (A)(17)(a)(iii), (iv), and (v) of this section, add five-sixths of the amount of depreciation expense allowed by subsection (k) of section 168 of the Internal Revenue Code, including the taxpayer's proportionate or distributive share of the amount of depreciation expense allowed by that subsection to a pass-through entity in which the taxpayer has a direct or indirect ownership interest.(ii) Subject to divisions (A)(17)(a)(iii), (iv), and (v) of this section, add five-sixths of the amount of qualifying section 179 depreciation expense, including the taxpayer's proportionate or distributive share of the amount of qualifying section 179 depreciation expense allowed to any pass-through entity in which the taxpayer has a direct or indirect ownership interest.(iii) Subject to division (A)(17)(a)(v) of this section, for taxable years beginning in 2012 or thereafter, if the increase in income taxes withheld by the taxpayer is equal to or greater than ten per cent of income taxes withheld by the taxpayer during the taxpayer's immediately preceding taxable year, "two-thirds" shall be substituted for "five-sixths" for the purpose of divisions (A)(17)(a)(i) and (ii) of this section.(iv) Subject to division (A)(17)(a)(v) of this section, for taxable years beginning in 2012 or thereafter, a taxpayer is not required to add an amount under division (A)(17) of this section if the increase in income taxes withheld by the taxpayer and by any pass-through entity in which the taxpayer has a direct or indirect ownership interest is equal to or greater than the sum of (I) the amount of qualifying section 179 depreciation expense and (II) the amount of depreciation expense allowed to the taxpayer by subsection (k) of section 168 of the Internal Revenue Code, and including the taxpayer's proportionate or distributive shares of such amounts allowed to any such pass-through entities.(v) If a taxpayer directly or indirectly incurs a net operating loss for the taxable year for federal income tax purposes, to the extent such loss resulted from depreciation expense allowed by subsection (k) of section 168 of the Internal Revenue Code and by qualifying section 179 depreciation expense, "the entire" shall be substituted for "five-sixths of the" for the purpose of divisions (A)(17)(a)(i) and (ii) of this section. The tax commissioner, under procedures established by the commissioner, may waive the add-backs related to a pass-through entity if the taxpayer owns, directly or indirectly, less than five per cent of the pass-through entity.
(b) Nothing in division (A)(17) of this section shall be construed to adjust or modify the adjusted basis of any asset.(c) To the extent the add-back required under division (A)(17)(a) of this section is attributable to property generating nonbusiness income or loss allocated under section 5747.20 of the Revised Code, the add-back shall be sitused to the same location as the nonbusiness income or loss generated by the property for the purpose of determining the credit under division (A) of section 5747.05 of the Revised Code. Otherwise, the add-back shall be apportioned, subject to one or more of the four alternative methods of apportionment enumerated in section 5747.21 of the Revised Code.(d) For the purposes of division (A)(17)(a)(v) of this section, net operating loss carryback and carryforward shall not include the allowance of any net operating loss deduction carryback or carryforward to the taxable year to the extent such loss resulted from depreciation allowed by section 168(k) of the Internal Revenue Code and by the qualifying section 179 depreciation expense amount.(e) For the purposes of divisions (A)(17) and (18) of this section: (i) "Income taxes withheld" means the total amount withheld and remitted under sections 5747.06 and 5747.07 of the Revised Code by an employer during the employer's taxable year.(ii) "Increase in income taxes withheld" means the amount by which the amount of income taxes withheld by an employer during the employer's current taxable year exceeds the amount of income taxes withheld by that employer during the employer's immediately preceding taxable year.(iii) "Qualifying section 179 depreciation expense" means the difference between (I) the amount of depreciation expense directly or indirectly allowed to a taxpayer under section 179 of the Internal Revised Code, and (II) the amount of depreciation expense directly or indirectly allowed to the taxpayer under section 179 of the Internal Revenue Code as that section existed on December 31, 2002.(18)(a) If the taxpayer was required to add an amount under division (A)(17)(a) of this section for a taxable year, deduct one of the following: (i) One-fifth of the amount so added for each of the five succeeding taxable years if the amount so added was five-sixths of qualifying section 179 depreciation expense or depreciation expense allowed by subsection (k) of section 168 of the Internal Revenue Code;(ii) One-half of the amount so added for each of the two succeeding taxable years if the amount so added was two-thirds of such depreciation expense;(iii) One-sixth of the amount so added for each of the six succeeding taxable years if the entire amount of such depreciation expense was so added.(b) If the amount deducted under division (A)(18)(a) of this section is attributable to an add-back allocated under division (A)(17)(c) of this section, the amount deducted shall be sitused to the same location. Otherwise, the add-back shall be apportioned using the apportionment factors for the taxable year in which the deduction is taken, subject to one or more of the four alternative methods of apportionment enumerated in section 5747.21 of the Revised Code.(c) No deduction is available under division (A)(18)(a) of this section with regard to any depreciation allowed by section 168(k) of the Internal Revenue Code and by the qualifying section 179 depreciation expense amount to the extent that such depreciation results in or increases a federal net operating loss carryback or carryforward. If no such deduction is available for a taxable year, the taxpayer may carry forward the amount not deducted in such taxable year to the next taxable year and add that amount to any deduction otherwise available under division (A)(18)(a) of this section for that next taxable year. The carryforward of amounts not so deducted shall continue until the entire addition required by division (A)(17)(a) of this section has been deducted.(19) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year, the amount the taxpayer received during the taxable year as reimbursement for life insurance premiums under section 5919.31 of the Revised Code.(20) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year, the amount the taxpayer received during the taxable year as a death benefit paid by the adjutant general under section 5919.33 of the Revised Code.(21) Deduct, to the extent included in federal adjusted gross income and not otherwise allowable as a deduction or exclusion in computing federal or Ohio adjusted gross income for the taxable year, military pay and allowances received by the taxpayer during the taxable year for active duty service in the United States army, air force, navy, marine corps, or coast guard or reserve components thereof or the national guard. The deduction may not be claimed for military pay and allowances received by the taxpayer while the taxpayer is stationed in this state.(22) Deduct, to the extent not otherwise allowable as a deduction or exclusion in computing federal or Ohio adjusted gross income for the taxable year and not otherwise compensated for by any other source, the amount of qualified organ donation expenses incurred by the taxpayer during the taxable year, not to exceed ten thousand dollars. A taxpayer may deduct qualified organ donation expenses only once for all taxable years beginning with taxable years beginning in 2007. For the purposes of division (A)(22) of this section:
(a) "Human organ" means all or any portion of a human liver, pancreas, kidney, intestine, or lung, and any portion of human bone marrow.(b) "Qualified organ donation expenses" means travel expenses, lodging expenses, and wages and salary forgone by a taxpayer in connection with the taxpayer's donation, while living, of one or more of the taxpayer's human organs to another human being.(23) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year, amounts received by the taxpayer as retired personnel pay for service in the uniformed services or reserve components thereof, or the national guard, or received by the surviving spouse or former spouse of such a taxpayer under the survivor benefit plan on account of such a taxpayer's death. If the taxpayer receives income on account of retirement paid under the federal civil service retirement system or federal employees retirement system, or under any successor retirement program enacted by the congress of the United States that is established and maintained for retired employees of the United States government, and such retirement income is based, in whole or in part, on credit for the taxpayer's uniformed service, the deduction allowed under this division shall include only that portion of such retirement income that is attributable to the taxpayer's uniformed service, to the extent that portion of such retirement income is otherwise included in federal adjusted gross income and is not otherwise deducted under this section. Any amount deducted under division (A)(23) of this section is not included in a taxpayer's adjusted gross income for the purposes of section 5747.055 of the Revised Code. No amount may be deducted under division (A)(23) of this section on the basis of which a credit was claimed under section 5747.055 of the Revised Code.(24) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year, the amount the taxpayer received during the taxable year from the military injury relief fund created in section 5902.05 of the Revised Code.(25) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year, the amount the taxpayer received as a veterans bonus during the taxable year from the Ohio department of veterans services as authorized by Section 2r of Article VIII, Ohio Constitution.(26) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year, any income derived from a transfer agreement or from the enterprise transferred under that agreement under section 4313.02 of the Revised Code.(27) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year, Ohio college opportunity or federal Pell grant amounts received by the taxpayer or the taxpayer's spouse or dependent pursuant to section 3333.122 of the Revised Code or 20 U.S.C. 1070a, et seq., and used to pay room or board furnished by the educational institution for which the grant was awarded at the institution's facilities, including meal plans administered by the institution. For the purposes of this division, receipt of a grant includes the distribution of a grant directly to an educational institution and the crediting of the grant to the enrollee's account with the institution.(28) Deduct from the portion of an individual's federal adjusted gross income that is business income, to the extent not otherwise deducted or excluded in computing federal adjusted gross income for the taxable year, one hundred twenty-five thousand dollars for each spouse if spouses file separate returns under section 5747.08 of the Revised Code or two hundred fifty thousand dollars for all other individuals.(29) Deduct, as provided under section 5747.78 of the Revised Code, contributions to ABLE savings accounts made in accordance with sections 113.50 to 113.56 of the Revised Code.(30)(a) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income during the taxable year, all of the following: (i) Compensation paid to a qualifying employee described in division (A)(14)(a) of section 5703.94 of the Revised Code to the extent such compensation is for disaster work conducted in this state during a disaster response period pursuant to a qualifying solicitation received by the employee's employer;(ii) Compensation paid to a qualifying employee described in division (A)(14)(b) of section 5703.94 of the Revised Code to the extent such compensation is for disaster work conducted in this state by the employee during the disaster response period on critical infrastructure owned or used by the employee's employer;(iii) Income received by an out-of-state disaster business for disaster work conducted in this state during a disaster response period, or, if the out-of-state disaster business is a pass-through entity, a taxpayer's distributive share of the pass-through entity's income from the business conducting disaster work in this state during a disaster response period, if, in either case, the disaster work is conducted pursuant to a qualifying solicitation received by the business.(b) All terms used in division (A)(30) of this section have the same meanings as in section 5703.94 of the Revised Code.(31) For a taxpayer who is a qualifying Ohio educator, deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year, the lesser of two hundred fifty dollars or the amount of expenses described in subsections (a)(2)(D)(i) and (ii) of section 62 of the Internal Revenue Code paid or incurred by the taxpayer during the taxpayer's taxable year in excess of the amount the taxpayer is authorized to deduct for that taxable year under subsection (a)(2)(D) of that section.(32) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year, amounts received by the taxpayer as a disability severance payment, computed under 10 U.S.C. 1212, following discharge or release under honorable conditions from the armed forces, as defined by 10 U.S.C. 101.(33) Deduct, to the extent not otherwise deducted or excluded in computing federal adjusted gross income or Ohio adjusted gross income, amounts not subject to tax due to an agreement entered into under division (A)(2) of section 5747.05 of the Revised Code.(34) Deduct amounts as provided under section 5747.79 of the Revised Code related to the taxpayer's qualifying capital gains and deductible payroll. To the extent a qualifying capital gain described under division (A)(34) of this section is business income, the taxpayer shall deduct those gains under this division before deducting any such gains under division (A)(28) of this section.
(35)(a) For taxable years beginning in or after 2026, deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year:(i) One hundred per cent of the capital gain received by the taxpayer in the taxable year from a qualifying interest in an Ohio venture capital operating company attributable to the company's investments in Ohio businesses during the period for which the company was an Ohio venture operating company; and(ii) Fifty per cent of the capital gain received by the taxpayer in the taxable year from a qualifying interest in an Ohio venture capital operating company attributable to the company's investments in all other businesses during the period for which the company was an Ohio venture operating company.(b) Add amounts previously deducted by the taxpayer under division (A)(35)(a) of this section if the director of development certifies to the tax commissioner that the requirements for the deduction were not met.(c) All terms used in division (A)(35) of this section have the same meanings as in section 122.851 of the Revised Code.(d) To the extent a capital gain described in division (A)(35)(a) of this section is business income, the taxpayer shall apply that division before applying division (A)(28) of this section.(36) Add, to the extent not otherwise included in computing federal or Ohio adjusted gross income for any taxable year, the taxpayer's proportionate share of the amount of the tax levied under section 5747.38 of the Revised Code and paid by an electing pass-through entity for the taxable year. Notwithstanding any provision of the Revised Code to the contrary, the portion of the addition required by division (A)(36) of this section related to the apportioned business income of the pass-through entity shall be considered business income under division (B) of this section. Such addition is eligible for the deduction in division (A)(28) of this section, subject to the applicable dollar limitations, and the tax rate prescribed by division (A)(4)(a) of section 5747.02 of the Revised Code. The taxpayer shall provide, upon request of the tax commissioner, any documentation necessary to verify the portion of the addition that is business income under this division.
(37) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year, amounts delivered to a qualifying institution pursuant to section 3333.128 of the Revised Code for the benefit of the taxpayer or the taxpayer's spouse or dependent.(38) Deduct, to the extent not otherwise deducted or excluded in computing federal or Ohio adjusted gross income for the taxable year, amounts received under the Ohio adoption grant program pursuant to section 5101.191 of the Revised Code.(39)[See note for applicability]
Deduct, to the extent included in federal adjusted gross income, income attributable to amounts provided to a taxpayer for any of the purposes for which an exclusion would have been authorized under section 139 of the Internal Revenue Code if the train derailment near the city of East Palestine on February 3, 2023, had been a qualified disaster pursuant to that section, or to compensate for lost business resulting from that derailment, if such amounts are provided by any of the following: (a) A federal, state, or local government agency;(b) A railroad company, as that term is defined in section 5727.01 of the Revised Code;(c) Any subsidiary, insurer, or agent of a railroad company or any related person. Notwithstanding any provision to the contrary, the derailment is not required to meet the definition of a "qualified disaster" pursuant to section 139 of the Internal Revenue Code to qualify for the deduction under this section.
(40) Deduct, to the extent included in federal adjusted gross income, income attributable to loan repayments on behalf of the taxpayer under the rural practice incentive program under section 3333.135 of the Revised Code.(41) Add any income taxes deducted in computing federal or Ohio adjusted gross income to the extent the income taxes were derived from income subject to a tax levied in another state or the District of Columbia when such tax was enacted for purposes of complying with internal revenue service notice 2020-75. Notwithstanding any provision of the Revised Code to the contrary, the portion of the addition required by division (A)(41) of this section related to the apportioned business income of the pass-through entity shall be considered business income under division (B) of this section. Such addition is eligible for the deduction in division (A)(28) of this section, subject to the applicable dollar limitations, and the tax rate prescribed by division (A)(4)(a) of section 5747.02 of the Revised Code. The taxpayer shall provide, upon request of the tax commissioner, any documentation necessary to verify the portion of the addition that is business income under this division.
(42) Deduct amounts contributed to a homeownership savings account and calculated pursuant to divisions (B) and (C) of section 5747.85 of the Revised Code.(43) If the taxpayer is the account owner, add the amount of funds withdrawn from a homeownership savings account not used for eligible expenses, regardless of who deposited those funds. As used in division (A)(43) of this section, "homeownership savings account," "account owner," and "eligible expenses" have the same meanings as in section 5747.85 of the Revised Code.