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Oklahoma Income Tax Calculator

Estimate your 2026 combined federal and Oklahoma income tax — Oklahoma adds progressive state income tax on top of federal.

InputsTY-2026
$
$
$
Federal + state tax17.1% effective
$17,125/yr
10% on $12,400$1,240
12% on $38,000$4,560
22% on $33,500$7,370
federal tax subtotal$13,170
OK state tax$3,955
taxable income
$83,900
marginal rate
22.0%
after tax
$82,876

A single filer earning Oklahoma's median household income of $65,310 owes about $2,393 in Oklahoma state income tax — an effective state rate of 3.66%. That is state tax only, on top of federal income tax and FICA.

Based on 2026 Oklahoma rules and 2026 federal rules, with the standard deduction and no other adjustments. Median income is the 2024 Census figure.

Income tax in Oklahoma

For 2026 Oklahoma replaced its old six-bracket schedule with a 0% band plus three rates — 2.5%, 3.5% and 4.5% — under House Bill 2764. The bands are still narrow: single filers reach the 4.5% top rate above $7,200 of taxable income ($14,400 joint). A further 0.25-point cut across all brackets can trigger when revenue conditions are met.

Oklahoma income tax structure (2026)

Oklahoma uses 4 progressive brackets on income above a $6,350 standard deduction (single) plus a $1,000 personal exemption. Single-filer brackets:

$0 – $3,7500%
$3,751 – $4,9002.50%
$4,901 – $7,2003.50%
over $7,2014.50%

Married-filing-jointly thresholds differ (roughly double in most states). Each slice of income is taxed at its own rate — landing in a bracket does not tax your whole income at that rate.

Common questions

What are Oklahoma's income tax brackets?
Oklahoma's 2026 schedule leaves the first $3,750 of taxable income untaxed, then applies three rates from 2.5% up to 4.5% above $7,200 (single filer). Joint filers get their own, wider thresholds.
What is the top income tax rate in Oklahoma?
4.5%, and it begins at $7,200 of taxable income for a single filer — about $14,550 of gross pay, once the $7,350 Oklahoma subtracts first is added back. Only income above that point is taxed at that rate; everything below it is taxed in the lower bands.
What is the tax bill on $65,310 in Oklahoma?
A single filer on Oklahoma's $65,310 median household income (2024 Census figure) owes roughly $2,393 to Oklahoma — an effective state rate of 3.7% against a 4.5% marginal bracket — plus about $5,657 of federal income tax.
Does Oklahoma have a personal exemption?
Yes — $1,000 per filer, or $2,000 on a joint return, subtracted before the brackets apply. It comes on top of the $6,350 standard deduction, for $7,350 of total single-filer subtractions.

How we calculate this

Federal brackets per our income-tax methodology, plus Oklahoma's 2026 state tax. Estimates only — not tax advice.

Oklahoma Tax Commission: Summary of 2025 Tax Legislation - HB 2764, 2026 tax brackets (68 O.S. 2355) →Tax Foundation: 2026 state individual income tax rates and brackets (Oklahoma 2.50% > $3,750; 3.50% > $4,900; 4.50% > $7,200) →

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Estimates for general informational purposes only; not tax advice. Oklahoma figures are simplified (credits, local taxes, and AGI adjustments vary) and should be verified with the state Department of Revenue. Oklahoma's three-rate 2.5%–4.5% schedule is applied with the $6,350 standard deduction and $1,000 personal exemption for a single filer — not itemized deductions, exemption phase-outs, or any Oklahoma tax credit. It also excludes any local, county, or school-district tax your municipality may add.