Key Tax Facts: Oklahoma
- Top rate of 4.75% on income above $7,200 (single) / $12,200 (joint)
- Retirement income from qualified plans is partially exempt
- Social Security benefits are exempt
- Oklahoma allows itemized deductions even if not itemizing federally
Estimate Your 2026 Federal and Oklahoma State Income Tax
Oklahoma State Income Tax Overview
Oklahoma imposes a graduated income tax with five brackets ranging from 0.25% to 4.75% for 2024. Single filers pay the top rate on income above $7,200. Oklahoma provides a standard deduction of $6,350 for single filers and $12,700 for married couples filing jointly. The state offers a credit for income taxes paid to other states and provides an exemption for Social Security income, military retirement pay, and a portion of other retirement income. Oklahoma also allows a deduction for contributions to the state's 529 college savings plan.
What Is Different About Oklahoma's Income Tax
Deductions and exemptions
Oklahoma's standard deduction is $6,350 for single filers and $12,700 for joint filers, and filers may itemize with federal amounts, less state tax and capped at $17,000 excluding charitable and medical deductions. Personal exemptions of $1,000 per person apply.
Credits worth knowing
The state earned income credit is 5% of the federal credit, and a sales tax relief credit of $40 per person offsets sales tax on groceries for low-income households. A child care or child tax credit equals 20% of the federal child care credit or 5% of the federal child tax credit, and there is a credit for taxes paid to other states.
Retirement, capital gains, and other income
Social Security is exempt, and the first $10,000 of pension, 401(k), or IRA income per person is exempt. Military retirement pay is fully exempt, and Oklahoma public pensions get a larger exclusion. Capital gains on Oklahoma real property or stock in Oklahoma companies held at least five years are fully deductible; other gains are taxed as ordinary income.
Rules summarized from the Oklahoma Tax Commission guidance for tax year 2026. Amounts that index annually are described in general terms; confirm the current figure on the official form instructions.
Oklahoma Income Tax Brackets (2026) projected
These are the Oklahoma state income tax brackets for tax year 2026. Oklahoma applies the same brackets to all filing statuses, carried forward from 2025 pending official 2026 figures. Only the income within each bracket is taxed at that rate -- not your entire income.
| Taxable Income | Tax Rate |
|---|---|
| $0 - $1,000 | 0.25% |
| $1,000 - $2,500 | 0.75% |
| $2,500 - $3,750 | 1.75% |
| $3,750 - $4,900 | 2.75% |
| $4,900 - $7,200 | 3.75% |
| Over $7,200 | 4.75% |
Source: Oklahoma Tax Commission. Oklahoma applies these brackets to all filing statuses.
What a Oklahoma Resident Actually Pays: A Worked Example
Your effective tax rate is almost always lower than your top bracket. Here is how the math works for a single filer earning $65,000.
Where Oklahoma Stands Among the 50 States
Oklahoma's top rate of 4.75% ranks #26 of the 41 states that tax wages. The median top rate across those 41 states is 5.2%, so Oklahoma is below the middle of the pack. It is one of 27 states with a graduated schedule, using 6 brackets; the top rate starts at $7,200 of taxable income, and the lowest bracket ends at $1,000.
On sales tax the picture is different: Oklahoma's combined state and average local rate of 8.98% ranks #6 of 50, against a national median of 7.00%.
Oklahoma State Tax at Five Income Levels (2026, single filer)
| Taxable income | Oklahoma tax | Effective rate | Marginal rate |
|---|---|---|---|
| $40,000 | $1,712 | 4.28% | 4.75% |
| $65,000 | $2,899 | 4.46% | 4.75% |
| $100,000 | $4,562 | 4.56% | 4.75% |
| $150,000 | $6,937 | 4.62% | 4.75% |
| $250,000 | $11,687 | 4.67% | 4.75% |
Brackets applied directly to the taxable-income figure shown, before Oklahoma-specific deductions, exemptions, or credits. Federal tax is separate and comes on top of every row.
Oklahoma vs. Its Neighbors on $75,000 of Taxable Income
A Oklahoma resident with $75,000 of taxable income pays about $3,374 in state income tax. Of Oklahoma's 6 neighboring states, 5 would tax that income less and 1 would tax it more.
Frequently Asked Questions -- Oklahoma Income Tax
Does Oklahoma have a state income tax?
Yes. Oklahoma imposes a state income tax with a top marginal rate of 4.75%. This is separate from your federal income tax obligation.
What is the Oklahoma income tax rate for 2026?
Oklahoma uses a graduated income tax system with rates from 0.25% to 4.75%. Only the income within each bracket is taxed at that bracket's rate -- not your entire income.
Do I have to file a Oklahoma state tax return?
Most full-year Oklahoma residents with income above the state filing threshold must file a state return. Check the Oklahoma Tax Commission for current thresholds and requirements.
How accurate is this estimate?
The federal figure uses the official IRS 2026 brackets and standard deduction. The Oklahoma figure applies the 2026 single-filer rate schedule to the same taxable income; it does not model Oklahoma-specific deductions, exemptions, credits, or local income taxes, so treat it as a planning number and confirm with the Oklahoma Tax Commission or a tax professional before filing.
How does Oklahoma compare with nearby states?
On $75,000 of taxable income, Oklahoma collects about $3,374. Texas collects $0, Arkansas collects $2,528, New Mexico collects $3,133, Colorado collects $3,300, Missouri collects $3,349, Kansas collects $4,098. See the comparison table above.
Where does Oklahoma rank on state income tax?
Oklahoma's top rate of 4.75% ranks #26 of the 41 states with an income tax, against a median top rate of 5.2%. Its combined sales tax of 8.98% ranks #6 of 50.
Does this calculator include federal income tax?
Yes. It estimates your 2026 federal income tax using the official IRS 2026 brackets, then applies the Oklahoma rate schedule to the same taxable income and shows both figures plus the combined total.
Where can I find official Oklahoma tax forms?
Official forms, instructions, and filing guidance are available at the Oklahoma Tax Commission.
What is the sales tax rate in Oklahoma?
Oklahoma's combined state and average local sales tax rate is 8.98%. This is separate from income tax and applies to most retail purchases -- use our sales tax calculator to check a specific purchase.
When are Oklahoma 2026 state taxes due?
2026 taxes are generally filed in 2027. The Oklahoma filing deadline is April 15, 2027, the same as the federal deadline.
Understanding Your Oklahoma Tax Estimate
Your results combine two separate bills: federal tax owed to the IRS, and Oklahoma state tax owed to the Oklahoma Tax Commission. The state return is filed separately from your federal Form 1040, with a state filing deadline of April 15. For the mechanics of how bracket math actually works -- why your effective rate is almost always lower than your top bracket -- see our marginal vs. effective tax rate guide.
Lowering Your Oklahoma Bill
Pre-tax retirement contributions reduce your federal and Oklahoma taxable income in the same move -- see our 401(k) contribution limits and HSA limits guides for the current caps. Beyond that, Oklahoma-specific credits and deductions that don't exist at the federal level are listed at the Oklahoma Tax Commission -- worth checking, since these are easy to miss if you only look at federal guidance.
Combined Sales + Income Tax Picture
Oklahoma's combined state-plus-average-local sales tax rate is 8.98%. If you're self-employed, that's an added layer on top of income tax -- our self-employment tax calculator covers the SE-specific piece separately.
Disclaimer: Estimates for educational purposes only. State tax results are approximations based on published bracket data and do not account for all deductions, credits, exemptions, local taxes, or individual situations. Not tax, legal, or financial advice. Consult the Oklahoma Tax Commission or a qualified tax professional for guidance specific to your situation.