Okla. Stat. tit. 68, § 68-2355

A. Individuals. For all taxable years beginning after December

31, 1998, and before January 1, 2006, a tax is hereby imposed upon

the Oklahoma taxable income of every resident or nonresident

individual, which tax shall be computed at the option of the

taxpayer under one of the two following methods:

1. METHOD 1.

a. Single individuals and married individuals filing

separately not deducting federal income tax:

(1) 1/2% tax on first $1,000.00 or part thereof,

(2) 1% tax on next $1,500.00 or part thereof,

(3) 2% tax on next $1,250.00 or part thereof,

(4) 3% tax on next $1,150.00 or part thereof,

(5) 4% tax on next $1,300.00 or part thereof,

(6) 5% tax on next $1,500.00 or part thereof,

(7) 6% tax on next $2,300.00 or part thereof, and

(8) (a) for taxable years beginning after December

31, 1998, and before January 1, 2002, 6.75%

tax on the remainder,

Oklahoma Statutes - Title 68. Revenue and Taxation Page 745

(b) for taxable years beginning on or after

January 1, 2002, and before January 1, 2004,

7% tax on the remainder, and

(c) for taxable years beginning on or after

January 1, 2004, 6.65% tax on the remainder.

b. Married individuals filing jointly and surviving

spouse to the extent and in the manner that a

surviving spouse is permitted to file a joint return

under the provisions of the Internal Revenue Code of

1986, as amended, and heads of households as defined

in the Internal Revenue Code of 1986, as amended, not

deducting federal income tax:

(1) 1/2% tax on first $2,000.00 or part thereof,

(2) 1% tax on next $3,000.00 or part thereof,

(3) 2% tax on next $2,500.00 or part thereof,

(4) 3% tax on next $2,300.00 or part thereof,

(5) 4% tax on next $2,400.00 or part thereof,

(6) 5% tax on next $2,800.00 or part thereof,

(7) 6% tax on next $6,000.00 or part thereof, and

(8) (a) for taxable years beginning after December

31, 1998, and before January 1, 2002, 6.75%

tax on the remainder,

(b) for taxable years beginning on or after

January 1, 2002, and before January 1, 2004,

7% tax on the remainder, and

(c) for taxable years beginning on or after

January 1, 2004, 6.65% tax on the remainder.

2. METHOD 2.

a. Single individuals and married individuals filing

separately deducting federal income tax:

(1) 1/2% tax on first $1,000.00 or part thereof,

(2) 1% tax on next $1,500.00 or part thereof,

(3) 2% tax on next $1,250.00 or part thereof,

(4) 3% tax on next $1,150.00 or part thereof,

(5) 4% tax on next $1,200.00 or part thereof,

(6) 5% tax on next $1,400.00 or part thereof,

(7) 6% tax on next $1,500.00 or part thereof,

(8) 7% tax on next $1,500.00 or part thereof,

(9) 8% tax on next $2,000.00 or part thereof,

(10) 9% tax on next $3,500.00 or part thereof, and

(11) 10% tax on the remainder.

b. Married individuals filing jointly and surviving

spouse to the extent and in the manner that a

surviving spouse is permitted to file a joint return

under the provisions of the Internal Revenue Code of

1986, as amended, and heads of households as defined

Oklahoma Statutes - Title 68. Revenue and Taxation Page 746

in the Internal Revenue Code of 1986, as amended,

deducting federal income tax:

(1) 1/2% tax on the first $2,000.00 or part thereof,

(2) 1% tax on the next $3,000.00 or part thereof,

(3) 2% tax on the next $2,500.00 or part thereof,

(4) 3% tax on the next $1,400.00 or part thereof,

(5) 4% tax on the next $1,500.00 or part thereof,

(6) 5% tax on the next $1,600.00 or part thereof,

(7) 6% tax on the next $1,250.00 or part thereof,

(8) 7% tax on the next $1,750.00 or part thereof,

(9) 8% tax on the next $3,000.00 or part thereof,

(10) 9% tax on the next $6,000.00 or part thereof, and
on the next $2,500.00 or part thereof,

(4) 3% tax on the next $1,400.00 or part thereof,

(5) 4% tax on the next $1,500.00 or part thereof,

(6) 5% tax on the next $1,600.00 or part thereof,

(7) 6% tax on the next $1,250.00 or part thereof,

(8) 7% tax on the next $1,750.00 or part thereof,

(9) 8% tax on the next $3,000.00 or part thereof,

(10) 9% tax on the next $6,000.00 or part thereof, and

(11) 10% tax on the remainder.

B. Individuals. For all taxable years beginning on or after

January 1, 2008, and ending any tax year which begins after December

31, 2015, for which the determination required pursuant to Sections

2355.1F and 2355.1G of this title is made by the State Board of

Equalization, a tax is hereby imposed upon the Oklahoma taxable

income of every resident or nonresident individual, which tax shall

be computed as follows:

1. Single individuals and married individuals filing

separately:

(a) 1/2% tax on first $1,000.00 or part thereof,

(b) 1% tax on next $1,500.00 or part thereof,

(c) 2% tax on next $1,250.00 or part thereof,

(d) 3% tax on next $1,150.00 or part thereof,

(e) 4% tax on next $2,300.00 or part thereof,

(f) 5% tax on next $1,500.00 or part thereof,

(g) 5.50% tax on the remainder for the 2008 tax year and

any subsequent tax year unless the rate prescribed by

subparagraph (h) of this paragraph is in effect, and

(h) 5.25% tax on the remainder for the 2009 and subsequent

tax years. The decrease in the top marginal

individual income tax rate otherwise authorized by

this subparagraph shall be contingent upon the

determination required to be made by the State Board

of Equalization pursuant to Section 2355.1A of this

title.

2. Married individuals filing jointly and surviving spouse to

the extent and in the manner that a surviving spouse is permitted to

file a joint return under the provisions of the Internal Revenue

Code of 1986, as amended, and heads of households as defined in the

Internal Revenue Code of 1986, as amended:

(a) 1/2% tax on first $2,000.00 or part thereof,

(b) 1% tax on next $3,000.00 or part thereof,

(c) 2% tax on next $2,500.00 or part thereof,

(d) 3% tax on next $2,300.00 or part thereof,

Oklahoma Statutes - Title 68. Revenue and Taxation Page 747

(e) 4% tax on next $2,400.00 or part thereof,

(f) 5% tax on next $2,800.00 or part thereof,

(g) 5.50% tax on the remainder for the 2008 tax year and

any subsequent tax year unless the rate prescribed by

subparagraph (h) of this paragraph is in effect, and

(h) 5.25% tax on the remainder for the 2009 and subsequent

tax years. The decrease in the top marginal

individual income tax rate otherwise authorized by

this subparagraph shall be contingent upon the

determination required to be made by the State Board

of Equalization pursuant to Section 2355.1A of this

title.

C. Individuals. For tax years 2024 and 2025, a tax is hereby

imposed upon the Oklahoma taxable income of every resident or

nonresident individual, which tax shall be computed as follows:

1. Single individuals and married individuals filing

separately:

(a) 0.25% tax on first $1,000.00 or part thereof,

(b) 0.75% tax on next $1,500.00 or part thereof,

(c) 1.75% tax on next $1,250.00 or part thereof,

(d) 2.75% tax on next $1,150.00 or part thereof,

(e) 3.75% tax on next $2,300.00 or part thereof, and

(f) 4.75% tax on the remainder.

2. Married individuals filing jointly and surviving spouse to

the extent and in the manner that a surviving spouse is permitted to

file a joint return under the provisions of the Internal Revenue

Code of 1986, as amended, and heads of households as defined in the

Internal Revenue Code of 1986, as amended:

(a) 0.25% tax on first $2,000.00 or part thereof,

(b) 0.75% tax on next $3,000.00 or part thereof,

(c) 1.75% tax on next $2,500.00 or part thereof,

(d) 2.75% tax on next $2,300.00 or part thereof,

(e) 3.75% tax on next $4,600.00 or part thereof, and
ovisions of the Internal Revenue

Code of 1986, as amended, and heads of households as defined in the

Internal Revenue Code of 1986, as amended:

(a) 0.25% tax on first $2,000.00 or part thereof,

(b) 0.75% tax on next $3,000.00 or part thereof,

(c) 1.75% tax on next $2,500.00 or part thereof,

(d) 2.75% tax on next $2,300.00 or part thereof,

(e) 3.75% tax on next $4,600.00 or part thereof, and

(f) 4.75% tax on the remainder.

No deduction for federal income taxes paid shall be allowed to

any taxpayer to arrive at taxable income.

D. Individuals. For tax year 2026 and for subsequent tax years

subject to rate reductions as provided by subsection E of this

section, a tax is hereby imposed upon the Oklahoma taxable income of

every resident or nonresident individual, which tax shall be

computed as follows:

1. Single individuals and married individuals filing

separately:

(a) 0% tax on first $3,750.00 or part thereof,

(b) 2.5% tax on the next $1,150.00 or part thereof,

(c) 3.5% tax on next $2,300.00 or part thereof, and

(d) 4.5% tax on the remainder.

Oklahoma Statutes - Title 68. Revenue and Taxation Page 748

2. Married individuals filing jointly and surviving spouse to

the extent and in the manner that a surviving spouse is permitted to

file a joint return under the provisions of the Internal Revenue

Code of 1986, as amended, and heads of households as defined in the

Internal Revenue Code of 1986, as amended:

(a) 0% tax on first $7,500.00 or part thereof,

(b) 2.5% tax on the next $2,300.00 or part thereof,

(c) 3.5% tax on next $4,600.00 or part thereof, and

(d) 4.5% tax on the remainder.

No deduction for federal income taxes paid shall be allowed to

any taxpayer to arrive at taxable income.

E. As provided by subsection D of Section 34.103 of Title 62 of

the Oklahoma Statutes, if the comparison year total collections

exceeds the base year total collections plus the income tax rate

reduction threshold, as certified by the State Board of Equalization

pursuant to paragraph 2 of subsection D of Section 34.103 of Title

62 of the Oklahoma Statutes, the tax rates otherwise prescribed in

paragraphs 1 and 2 of subsection D of this section shall each be

reduced by twenty-five one-hundredths (0.25) of a percentage point

(0.0025) until the applicable rate equals zero percent (0%). Each

successive certification by the State Board of Equalization with

respect to which the comparison year total collections exceeds the

base year total collections plus the income tax rate reduction

threshold, as determined by the State Board of Equalization as

provided by subsection D of Section 34.103 of Title 62 of the

Oklahoma Statutes, shall further reduce the individual income tax

rates by twenty-five one-hundredths (0.25) of a percentage point

(0.0025) until the applicable rate equals zero percent (0%). Any

reduction in the income tax rates authorized by this section and by

this act shall take effect on January 1 following the final

certification by the State Board of Equalization, if any, made

during its meeting in February each year.

F. If a revenue failure is declared pursuant to the provisions

of Section 34.49 of Title 62 of the Oklahoma Statutes prior to the

end of the calendar year in which the Board makes a certification

pursuant to paragraph 2 of subsection D of Section 34.103 of Title

62 of the Oklahoma Statutes, the reduction in tax rates, as

otherwise provided for in this section, shall not occur until a

subsequent certification is made by the State Board of Equalization

pursuant to paragraph 2 of subsection D of Section 34.103 of Title

62 of the Oklahoma Statutes.

G. Nonresident aliens. In lieu of the rates set forth in

subsection A above, there shall be imposed on nonresident aliens, as

defined in the Internal Revenue Code of 1986, as amended, a tax of

eight percent (8%) instead of thirty percent (30%) as used in the

Internal Revenue Code of 1986, as amended, with respect to the
of subsection D of Section 34.103 of Title

62 of the Oklahoma Statutes.

G. Nonresident aliens. In lieu of the rates set forth in

subsection A above, there shall be imposed on nonresident aliens, as

defined in the Internal Revenue Code of 1986, as amended, a tax of

eight percent (8%) instead of thirty percent (30%) as used in the

Internal Revenue Code of 1986, as amended, with respect to the

Oklahoma Statutes - Title 68. Revenue and Taxation Page 749

Oklahoma taxable income of such nonresident aliens as determined

under the provision of the Oklahoma Income Tax Act.

Every payer of amounts covered by this subsection shall deduct

and withhold from such amounts paid each payee an amount equal to

eight percent (8%) thereof. Every payer required to deduct and

withhold taxes under this subsection shall for each quarterly period

on or before the last day of the month following the close of each

such quarterly period, pay over the amount so withheld as taxes to

the Oklahoma Tax Commission, and shall file a return with each such

payment. Such return shall be in such form as the Tax Commission

shall prescribe. Every payer required under this subsection to

deduct and withhold a tax from a payee shall, as to the total

amounts paid to each payee during the calendar year, furnish to such

payee, on or before January 31 of the succeeding year, a written

statement showing the name of the payer, the name of the payee and

the payee’s Social Security account number, if any, the total amount

paid subject to taxation, and the total amount deducted and withheld

as tax and such other information as the Tax Commission may require.

Any payer who fails to withhold or pay to the Tax Commission any

sums herein required to be withheld or paid shall be personally and

individually liable therefor to the State of Oklahoma.

H. Corporations. For all taxable years beginning after

December 31, 2021, a tax is hereby imposed upon the Oklahoma taxable

income of every corporation doing business within this state or

deriving income from sources within this state in an amount equal to

four percent (4%) thereof.

There shall be no additional Oklahoma income tax imposed on

accumulated taxable income or on undistributed personal holding

company income as those terms are defined in the Internal Revenue

Code of 1986, as amended.

I. Certain foreign corporations. In lieu of the tax imposed in

the first paragraph of subsection G of this section, for all taxable

years beginning after December 31, 2021, there shall be imposed on

foreign corporations, as defined in the Internal Revenue Code of

1986, as amended, a tax of four percent (4%) instead of thirty

percent (30%) as used in the Internal Revenue Code of 1986, as

amended, where such income is received from sources within this

state, in accordance with the provisions of the Internal Revenue

Code of 1986, as amended, and the Oklahoma Income Tax Act.

Every payer of amounts covered by this subsection shall deduct

and withhold from such amounts paid each payee an amount equal to

four percent (4%) thereof. Every payer required to deduct and

withhold taxes under this subsection shall for each quarterly period

on or before the last day of the month following the close of each

such quarterly period, pay over the amount so withheld as taxes to

the Tax Commission, and shall file a return with each such payment.

Such return shall be in such form as the Tax Commission shall

Oklahoma Statutes - Title 68. Revenue and Taxation Page 750

prescribe. Every payer required under this subsection to deduct and

withhold a tax from a payee shall, as to the total amounts paid to

each payee during the calendar year, furnish to such payee, on or

before January 31 of the succeeding year, a written statement

showing the name of the payer, the name of the payee and the payee’s

Social Security account number, if any, the total amounts paid
prescribe. Every payer required under this subsection to deduct and

withhold a tax from a payee shall, as to the total amounts paid to

each payee during the calendar year, furnish to such payee, on or

before January 31 of the succeeding year, a written statement

showing the name of the payer, the name of the payee and the payee’s

Social Security account number, if any, the total amounts paid

subject to taxation, the total amount deducted and withheld as tax,

and such other information as the Tax Commission may require. Any

payer who fails to withhold or pay to the Tax Commission any sums

herein required to be withheld or paid shall be personally and

individually liable therefor to the State of Oklahoma.

J. Fiduciaries. A tax is hereby imposed upon the Oklahoma

taxable income of every trust and estate at the same rates as are

provided in subsections B through D of this section for single

individuals. Fiduciaries are not allowed a deduction for any

federal income tax paid.

K. Tax rate tables. For all taxable years beginning after

December 31, 1991, in lieu of the tax imposed by subsections A

through D of this section, as applicable there is hereby imposed for

each taxable year on the taxable income of every individual, whose

taxable income for such taxable year does not exceed the ceiling

amount, a tax determined under tables, applicable to such taxable

year which shall be prescribed by the Tax Commission and which shall

be in such form as it determines appropriate. In the table so

prescribed, the amounts of the tax shall be computed on the basis of

the rates prescribed by subsections A through D of this section.

For purposes of this subsection, the term “ceiling amount” means,

with respect to any taxpayer, the amount determined by the Tax

Commission for the tax rate category in which such taxpayer falls.