Oklahoma Income Tax Calculator
Figure basis: Official Oklahoma Tax CommissionOklahoma income tax is calculated on your taxable income after deductions and exemptions. This calculator estimates your Oklahoma state income tax liability for the current tax year. Enter your annual gross income, choose your filing status (single, married filing jointly, married filing separately, or head of household), and add any pre-tax deductions to see your estimated state tax, effective tax rate, and marginal bracket. Results update in real time as you adjust your inputs. The calculator covers Oklahoma state income tax only; federal income tax, FICA payroll taxes, and any local income taxes your city or county imposes are separate. All rates and brackets are sourced directly from Oklahoma Tax Commission and are verified for the current tax year. Use this tool alongside the federal income tax calculator to see your combined total tax liability. Effective rate and marginal rate are both shown so you can evaluate the impact of additional income, filing status changes, or increased pre-tax contributions to a 401(k) or similar plan.
Oklahoma uses graduated income tax brackets. A single filer earning $60,000 owes $2,199.40 in state income tax, an effective rate of 3.67% and a marginal rate of 4.5%. Enter your own income and filing status below.
Bracket breakdown
| Income range | Rate | Tax in bracket |
|---|
How Oklahoma income tax works
Oklahoma HB 2764 (2025), 68 O.S. Sec. 2355, reduced individual income tax rates effective for tax year 2026, collapsing the prior six-bracket schedule (0.25% to 4.75%) into four brackets: 0.0%, 2.5%, 3.5% and a top rate of 4.5%. Married filing joint, head of household and surviving spouse filers use double the single and married-filing-separate thresholds. A further 0.25% across-the-board reduction may trigger in a future year if State Board of Equalization revenue conditions are met (62 O.S. Sec. 34.103); it is not in effect for 2026. Your result updates the page link, so you can copy a permalink to any calculation.
taxable income = gross income - standard deduction
state income tax = sum of (income in each bracket x bracket rate / 100)
effective rate = state income tax / gross income x 100
marginal rate = rate of the highest bracket reached
Oklahoma income tax brackets (2026)
The table below shows the Oklahoma graduated income tax brackets for single filers, as published by the Oklahoma Tax Commission and verified Jul 16, 2026. Thresholds for other filing statuses may differ; use the calculator above to select your status.
| Income range | Rate | Source |
|---|---|---|
| $0.00 to $3,749.00 | 0% | Oklahoma Tax Commission |
| $3,751.00 to $4,899.00 | 2.5% | Oklahoma Tax Commission |
| $4,901.00 to $7,199.00 | 3.5% | Oklahoma Tax Commission |
| Over $7,201.00 | 4.5% | Oklahoma Tax Commission |
How Oklahoma's 2026 rate cut reshapes the brackets
Oklahoma's 2026 tax year is the first under HB 2764, which collapsed the old six-bracket schedule (a top rate of 4.75% in 2025) into four brackets topping out at 4.5%. The change also introduced a genuine 0% bracket: the first $3,750 of taxable income for single and married-filing-separate filers, and the first $7,500 for those filing jointly or as head of household, escapes state tax entirely. Above that, the 2.5%, 3.5%, and 4.5% rates apply, with the top rate reaching everything over $7,200 (single) or $14,400 (joint).
The detail most Oklahoma filers miss is the standard deduction. Oklahoma does not conform to the federal figure and freezes its own much lower amounts: $6,350 for single filers, $12,700 for married filing jointly, and $9,350 for head of household. Because those thresholds have not moved with inflation, a rising share of income is exposed to tax even as the headline rate falls, and a separate $1,000 personal exemption per person softens that only slightly.
One more point worth watching: HB 2764 pairs the 2026 cut with a revenue trigger that could shave another 0.25% off the top rate in a later year if state collections grow enough. That further reduction is not in effect for 2026, so this calculator uses the 4.5% top rate. Enter your own income above to see how the new zero bracket changes your effective rate versus the old schedule.
Oklahoma income tax: frequently asked questions
How much is the Oklahoma income tax on a $60,000 salary?
A single filer earning $60,000 a year in Oklahoma has a taxable income of $53,650.00 after the standard deduction. The computed state income tax is $2,199.40, an effective rate of 3.67%. Enter your own income above for an exact figure.
What is the Oklahoma state income tax rate?
Oklahoma has graduated income tax brackets. The marginal rate depends on your taxable income and filing status. For a single filer earning $60,000 the marginal rate is 4.5%.
What filing statuses does Oklahoma income tax apply to?
Oklahoma income tax applies to single filers, married couples filing jointly, head of household filers and married couples filing separately. Bracket thresholds and standard deductions may differ by filing status.
What is Oklahoma's top income tax rate for 2026?
Oklahoma's top individual income tax rate is 4.5% for tax year 2026, applying to taxable income above $7,200 for single and married-filing-separate filers and above $14,400 for married filing jointly, head of household and surviving spouse filers.
What standard deduction can Oklahoma filers claim?
Oklahoma sets its own standard deduction, which is lower than the federal amount: $6,350 for single or married filing separate, $12,700 for married filing jointly or qualifying surviving spouse, and $9,350 for head of household. Oklahoma also allows a $1,000 personal exemption for each exemption claimed.
How has Oklahoma's top income tax rate changed recently?
Oklahoma's top rate was 5.0% before dropping to 4.75%. HB 2764, enacted in 2025, cut it further to 4.5% effective for tax year 2026 and added a 0% bracket that exempts the first $3,750 of taxable income for single filers ($7,500 for joint filers).
Does Oklahoma tax Social Security or retirement income?
Oklahoma exempts Social Security benefits from state income tax and allows a deduction for certain government and other retirement income. Details are published by the Oklahoma Tax Commission in the annual Form 511 packet.
Official sources
- Oklahoma income tax rates (tax year 2026): Oklahoma Tax Commission, as at Jul 16, 2026.
Reviewed by the CalculatorHub team, edited by James Graham, 11 June 2026. See our methodology. General information, not financial or tax advice.