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
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.
Oklahoma Income Tax Brackets (2025)
These are the Oklahoma state income tax brackets for tax year 2025. Oklahoma applies the same brackets to all filing statuses. 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.
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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 2025?
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?
This is a planning estimate of your federal income tax only. It does not calculate Oklahoma state tax, and it does not account for state deductions, credits, exemptions, or local taxes. Use the Oklahoma rate schedule above as a reference, and verify with official Oklahoma tax forms or a qualified tax professional.
Does this calculator include federal income tax?
Yes. The calculator estimates your 2025 federal income tax using the official IRS 2025 brackets. It does not compute your Oklahoma state tax -- see the Oklahoma rate schedule below to work that out.
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 2025 state taxes due?
2025 taxes are generally filed in 2026. The Oklahoma filing deadline is April 15, 2026, 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.