Oklahoma Capital Gains Tax Calculator 2026

How Oklahoma taxes a capital gain

Statutory authority: Okla. HB 2764 (2025), 68 O.S. 2355, as published by the Oklahoma Tax Commission in "Summary of 2025 Tax Legislation" (retrieved 1 September 2026)

Six brackets became four, and the first of them is zero

HB 2764 restructured Oklahoma’s income tax for tax year 2026 and subsequent years. The six brackets that preceded it were consolidated into four, and the top marginal rate came down from 4.75% to 4.5%.

The first of the four is a genuine zero-rate band: no tax at all on the first $3,750 of taxable income for a single or married-separate filer, or the first $7,500 for a joint filer, a head of household or a surviving spouse. Above that the rates run 2.5%, then 3.5%, then 4.5%, with the top band beginning at $7,200 single and $14,400 joint.

Those transition points are low enough that most filers with a meaningful capital gain will find the whole of it in the 4.5% band. The zero band matters most for small gains in low-income years — a retiree selling a modest holding, or a year with little other income — where it can remove the state charge entirely.

Head of household shares the joint table, not the single one

Oklahoma groups its filing statuses in a way that is easy to get wrong. Single and married-filing-separately share one bracket table. Married filing jointly, head of household and surviving spouse share a second table with thresholds at exactly double the first.

The consequence is that a head of household in Oklahoma gets the full doubled zero band of $7,500, not the $3,750 a single filer receives. That is more generous than the federal treatment of the same status, where head-of-household brackets sit between the single and joint schedules rather than matching the joint one, and it is a detail worth checking rather than assuming.

A revenue trigger can cut every bracket by a quarter point

Oklahoma is the second state on this site where a rate is not fully determined by the statute that sets it. Under 62 O.S. 34.103 the individual income tax rates can be reduced by 0.25 percentage points across all brackets when certain revenue conditions are met.

The evaluation runs on a fixed calendar: the State Board of Equalization considers the conditions each December and makes its final certification in February. So the brackets for a future year may not be settled until part-way through the preceding one, and a projection made before certification is a projection rather than a rate.

The 2026 figures on this page do not depend on that mechanism — they are the brackets the Tax Commission itself published for tax year 2026 following HB 2764. But anyone rolling these figures forward to 2027 needs to read the certification rather than assume the schedule continues unchanged.

The brackets are too narrow to matter on most gains

It is worth being blunt about where Oklahoma’s graduated structure actually bites, because the presence of four brackets suggests more nuance than the numbers support.

The top band opens at $7,200 of taxable income for a single filer and $14,400 for a joint one. Those are very low thresholds by the standards of a capital gains calculation. Anyone with an ordinary salary has passed all of them before a gain is stacked on top, which means the marginal rate on essentially any realised gain is the top 4.5% and the ladder beneath it is spent on ordinary income.

So for planning purposes Oklahoma behaves like a flat 4.5% state for most people most of the time, and the graduated structure only surfaces in genuinely low-income years. That is the opposite of a state like California, where the brackets are wide enough that where a gain lands changes the answer materially.

Reading the Oklahoma bracket table without tripping over it

The Tax Commission publishes the brackets in a "pay this, plus this percentage of the excess over that" format, and the middle column is easy to misread as a total rather than a base.

For a single filer the rows run: nothing on the first $3,750; then $0.00 plus 2.5% of the excess over $3,750; then $28.75 plus 3.5% of the excess over $4,900; then $109.25 plus 4.5% of the excess over $7,200. The dollar figure at the start of each row is the cumulative tax on everything beneath it, not an additional charge.

That structure is worth understanding because it is how most states present a graduated schedule, and because recomputing the cumulative figure from the breakpoints is a genuine check on whether a table has been transcribed correctly. This site applies exactly that check to the federal brackets on every build.

What Oklahoma does not change

Oklahoma taxes capital gains as ordinary income on the ladder above. Your federal position is untouched: the 0/15/20% rates, the 3.8% net investment income tax, the Section 121 home-sale exclusion and Section 1250 recapture all apply exactly as they would in any other state.

The state figure here stacks your gain on federal ordinary taxable income. Oklahoma computes its own taxable income with its own deductions and exemptions, which are not modelled, so the number is close for a straightforward wage-and-sale situation and rougher where a return carries significant state adjustments.

A worked Oklahoma example

Every figure below is computed by the same engine that powers the calculator above, at the moment this page was built — not typed in by hand. When the tax-year data is updated, this example updates with it.

A $160,000 gain on an $85,000 salary

A single filer in Oklahoma earning $85,000 sells long-held shares for a $160,000 gain. With income at this level the gain sits above every transition point.

Taxable income after deduction: $228,900
Taxable gain: $160,000
Tax owed without the sale: $9,870
Tax the sale added: $25,710
of which net investment income tax: $1,710
Total federal tax: $35,580
Oklahoma state tax: $7,200
Effective rate on the gain: 16.07%

The whole gain lands in the top band, so the state charge is a flat 4.5% of it in practice. The lower brackets and the zero band were consumed by ordinary income long before the gain was stacked on top.

Caveats on this example (2)

Net investment income was derived from capital gains and qualified dividends only. Interest, non-qualified dividends, rents, royalties and passive business income inside ordinaryIncome are also net investment income under IRC 1411(c) and are not counted here.
Oklahoma: the state taxable income base is approximated by federal ordinary taxable income. State additions, subtractions and deductions are not modelled.

Show the working — 13 steps, each with its citation

Net short-term capital gain or loss for the year$0Short-term / long-term nettingIRC 1222; IRS Pub. 550
Assets held one year or less. Taxed at ordinary rates if a net gain.
Net long-term capital gain or loss for the year$160,000Short-term / long-term nettingIRC 1222; IRS Pub. 550
Assets held more than one year. Eligible for the 0/15/20% rates.
Standard deduction-$16,100Deduction from adjusted gross incomeRev. Proc. 2025-32 4.14(1) (IRC 63(c)(2))
Adjusted gross income of $245,000 less $16,100.
Taxable income$228,900Taxable incomeIRC 63(a)
The figure the rate tables and the capital gain ceilings are both measured against.
Ordinary income taxed at 10%$1,240Ordinary income tax bracketsRev. Proc. 2025-32 4.01 (IRC 1(j)(2))
$12,400 of taxable income between $0 and $12,400.
Ordinary income taxed at 12%$4,560Ordinary income tax bracketsRev. Proc. 2025-32 4.01 (IRC 1(j)(2))
$38,000 of taxable income between $12,400 and $50,400.
Ordinary income taxed at 22%$4,070Ordinary income tax bracketsRev. Proc. 2025-32 4.01 (IRC 1(j)(2))
$18,500 of taxable income between $50,400 and $68,900.
Ordinary income stacked below the long-term gain$68,900LTCG bracket stackingIRC 1(h); Schedule D Tax Worksheet, Form 1040 instructions
Long-term gain is taxed by reference to where it sits ON TOP of $68,900 of other taxable income, not from the bottom of the rate table.
Long-term gain taxed at 15%$24,000LTCG bracket stackingRev. Proc. 2025-32 4.03 (IRC 1(h), 1(j)(5))
Gain between the $49,450 zero-rate ceiling and the $545,500 15% ceiling.
Net investment income tax threshold$200,000IRC 1411 thresholdIRC 1411(a)-(b); 26 C.F.R. 1.1411-2
Modified AGI of $245,000 against the $200,000 threshold for a single filer. This threshold is statutory and is not adjusted for inflation.
Net investment income tax at 3.8%$1,710Net investment income taxIRC 1411(a)-(b); 26 C.F.R. 1.1411-2
3.8% of $45,000, the lesser of net investment income ($160,000) and the amount by which modified AGI exceeds the threshold ($45,000). Here the binding figure is the excess of modified AGI over the threshold.
Oklahoma income tax on the gain$7,200State graduated income tax on capital gainsOkla. HB 2764 (2025), 68 O.S. 2355, as published by the Oklahoma Tax Commission in "Summary of 2025 Tax Legislation"
$160,000 stacked on $68,900 of other taxable income across a 4-bracket ladder topping out at 4.5%. Federal ordinary taxable income is used as the base; the state's own taxable income differs, so treat this as an approximation.
Total tax$42,780Sum of all tax stepsRev. Proc. 2025-32 (I.R.B. 2025-45)
$42,780 on $245,000 of total income, an effective rate of 17.46%.

A small gain inside the zero band

A married couple filing jointly with $34,000 of income sells for a $4,000 gain, leaving Oklahoma taxable income inside the $7,500 zero band.

Taxable income after deduction: $5,800
Taxable gain: $4,000
Tax owed without the sale: $180
Tax the sale added: $0
Total federal tax: $180
Oklahoma state tax: $0
Effective rate on the gain: 0%

Oklahoma charges nothing, while the federal return still produces a bill. That gap is the zero band doing its work: the state and federal thresholds are set in completely different places, so a gain can be taxable in one system and not the other.

Caveats on this example (2)

Net investment income was derived from capital gains and qualified dividends only. Interest, non-qualified dividends, rents, royalties and passive business income inside ordinaryIncome are also net investment income under IRC 1411(c) and are not counted here.
Oklahoma: the state taxable income base is approximated by federal ordinary taxable income. State additions, subtractions and deductions are not modelled.

Show the working — 11 steps, each with its citation

Net short-term capital gain or loss for the year$0Short-term / long-term nettingIRC 1222; IRS Pub. 550
Assets held one year or less. Taxed at ordinary rates if a net gain.
Net long-term capital gain or loss for the year$4,000Short-term / long-term nettingIRC 1222; IRS Pub. 550
Assets held more than one year. Eligible for the 0/15/20% rates.
Standard deduction-$32,200Deduction from adjusted gross incomeRev. Proc. 2025-32 4.14(1) (IRC 63(c)(2))
Adjusted gross income of $38,000 less $32,200.
Taxable income$5,800Taxable incomeIRC 63(a)
The figure the rate tables and the capital gain ceilings are both measured against.
Ordinary income taxed at 10%$180Ordinary income tax bracketsRev. Proc. 2025-32 4.01 (IRC 1(j)(2))
$1,800 of taxable income between $0 and $1,800.
Ordinary income stacked below the long-term gain$1,800LTCG bracket stackingIRC 1(h); Schedule D Tax Worksheet, Form 1040 instructions
Long-term gain is taxed by reference to where it sits ON TOP of $1,800 of other taxable income, not from the bottom of the rate table.
Long-term gain taxed at 0%$0LTCG bracket stackingRev. Proc. 2025-32 4.03 (IRC 1(h), 1(j)(5))
Taxable income stays at or below the $98,900 maximum zero-rate amount.
Net investment income tax threshold$250,000IRC 1411 thresholdIRC 1411(a)-(b); 26 C.F.R. 1.1411-2
Modified AGI of $38,000 against the $250,000 threshold for married filing jointly. This threshold is statutory and is not adjusted for inflation.
Net investment income tax does not apply$0IRC 1411 thresholdIRC 1411(a)-(b); 26 C.F.R. 1.1411-2
Modified AGI is $212,000 below the threshold.
Oklahoma income tax on the gain$0State graduated income tax on capital gainsOkla. HB 2764 (2025), 68 O.S. 2355, as published by the Oklahoma Tax Commission in "Summary of 2025 Tax Legislation"
$4,000 stacked on $1,800 of other taxable income across a 4-bracket ladder topping out at 4.5%. Federal ordinary taxable income is used as the base; the state's own taxable income differs, so treat this as an approximation.
Total tax$180Sum of all tax stepsRev. Proc. 2025-32 (I.R.B. 2025-45)
$180 on $38,000 of total income, an effective rate of 0.47%.

What this calculator does not cover for Oklahoma

The Oklahoma figure stacks your gain on your federal ordinary taxable income. Oklahoma computes its own taxable income with its own additions and subtractions, which are not modelled here — so treat the state number as a close approximation for a straightforward wage-and-sale situation, and as a rough one if your return carries significant state adjustments.

Full-year residency is assumed throughout. Part-year residents, non-residents, and gains sourced to property in another state all turn on rules this calculator does not model. The complete list of what is in and out of scope is on the methodology page.

Other states

See the full 2026 capital gains guide for the federal rules that apply wherever you live — the rate ladder, the net investment income tax, the home-sale exclusion and depreciation recapture — plus every state we currently cover.