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Oklahoma Income Tax Calculator 2026 — State Tax Brackets & Rates
Estimated Oklahoma state income tax at common income levels, combined federal + state burden, and the full Oklahoma tax bracket table — 2025 rates.
Reviewed for accuracy June 2026 by Gary Sing
State tax type
Progressive
State tax at $75k
$3,374
Federal tax at $75k
$8,114
Combined eff. rate $75k
15.3%
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Oklahoma income tax at common income levels — 2025
Single filer, 2025 federal standard deduction ($15,000). Federal tax uses 2025 IRS brackets.
| Income | Oklahoma state tax | State eff. rate | Federal tax | Total tax | Total eff. rate |
|---|---|---|---|---|---|
| $50,000 | $2,187 | 4.4% | $3,962 | $6,149 | 12.3% |
| $75,000 | $3,374 | 4.5% | $8,114 | $11,488 | 15.3% |
| $100,000 | $4,562 | 4.6% | $13,614 | $18,176 | 18.2% |
Single filer. Federal tax computed on gross income minus $15,000 standard deduction using 2025 IRS brackets. State tax estimates are approximate — consult a tax professional for exact liability. Does not include FICA (Social Security + Medicare), local taxes, or deductions beyond the standard deduction.
Oklahoma state income tax rate 2025
Oklahoma has a six-bracket system with a modest top rate of 4.75% on income over $7,200. Oklahoma's low bracket thresholds mean most income reaches the top rate quickly, but the overall burden is moderate.
| Taxable income (single) | 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% |
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Oklahoma income tax — frequently asked questions
Does Oklahoma have a state income tax?
Yes. Oklahoma has a progressive income tax with rates up to 4.8%.
What is the Oklahoma state income tax rate for 2025?
Oklahoma has a progressive tax with a top rate of 4.8%. The effective rate depends on income level — at $75,000, the effective Oklahoma state tax rate is approximately 4.5%.
How much Oklahoma state income tax do I owe on $75,000?
On a $75,000 gross income (single filer, 2025), estimated Oklahoma state income tax is approximately $3,374 (effective rate: 4.5%). Combined with federal income tax of approximately $8,114, total tax is about $11,488 — an overall effective rate of 15.3%.
What is the combined federal and Oklahoma state income tax at $100,000?
At $100,000 gross income (single filer, 2025 standard deductions): federal income tax is approximately $13,614, Oklahoma state income tax is $4,562, for a combined total of approximately $18,176 — an overall effective rate of 18.2%.
How does Oklahoma's income tax compare to other states?
Oklahoma's top rate of 4.8% places it among the lower-tax states nationally. The nine states with no income tax pay $0 in state income tax; the highest-tax states (California at 13.3%, Hawaii at 11%) have the largest state income tax burdens.