Last updated: September 2026

Oklahoma Income Tax Calculator

Oklahoma rebuilt its brackets for 2026: the first $3,750 of taxable income is now untaxed, then 2.5%, 3.5%, and a 4.5% top rate from $7,200, down from 4.75%. A single filer earning $80,000 owes about $3,055, against $3,262 for 2025. The law also sets up further cuts of a quarter point at a time when revenue grows enough.

Oklahoma tax data current for 2025 & 2026 · 2027 available as a projection · Updated for the One Big Beautiful Bill Act

Estimate Your Tax Bill

Income
$
$

SE tax and the deductible half are calculated automatically.

$
Deduction
Standard deduction —

Results update automatically as you type.

Estimated Total Tax
—
federal + state + SE
Wages / Salary —
Total Income —
Adj. Gross Income —
Standard Deduction —
Taxable Income —
Federal Income Tax —
Total Tax —
Effective Rate
—
total tax / total income
Marginal Rate
—
federal, on last dollar

Estimate only. Does not include credits, AMT, or investment income at preferential rates.

Federal Tax Bracket Breakdown

Enter your income above to see how your tax is calculated bracket by bracket.

Oklahoma Income Tax at Common Salaries (2026)

Estimated annual federal and Oklahoma state income tax for a single filer, after the standard deduction. Numbers reflect the 2026 IRS tax tables and the 2026 Oklahoma state tax schedule. FICA (Social Security and Medicare) is not income tax — see the calculator above for full paycheck modeling.

Salary Federal Tax OK Tax Total Income Tax Effective Rate
$40,000 $2,620 $1,255 $3,875 9.7%
$60,000 $5,020 $2,155 $7,175 12%
$80,000 $8,770 $3,055 $11,825 14.8%
$100,000 $13,170 $3,955 $17,125 17.1%
$150,000 $24,734 $6,205 $30,939 20.6%
$200,000 $36,734 $8,455 $45,189 22.6%

Single filer using the standard deduction. No tax credits, itemized deductions, or pre-tax adjustments.

What's different about Oklahoma income tax

Three rates instead of six

HB 2764 replaced six brackets running from 0.25% to 4.75% with a 0% band and three rates. Single filers and married people filing separately pay nothing on the first $3,750, 2.5% on the next $1,150, 3.5% on the next $2,300, and 4.5% above $7,200. Joint filers and heads of household have bands twice as wide, with 4.5% above $14,400.

More cuts are built in

Each time the State Board of Equalization certifies that revenue has grown past a set threshold, every rate drops by 0.25 percentage point, continuing until it reaches zero. The first test is at the Board's December 2026 meeting, and any cut takes effect the January after the final February certification.

A fixed standard deduction and exemption

The standard deduction is $6,350 for single filers and $12,700 for joint returns, and each person gets a $1,000 exemption. Oklahoma allows no deduction for federal income tax. Itemized deductions are capped at $17,000; from 2027, gambling losses deductible federally are exempt from that cap.

Credits for school choice

The statewide cap on the Parental Choice Tax Credit rises from $250 million to $275 million for fiscal 2027. Donors to a scholarship granting organization can claim a state credit of 50% of the gift, up to $1,000 per taxpayer or $2,000 on a joint return.

Oklahoma tax credits (2026 returns)

Credits come off the tax itself, after the brackets. The calculator applies only the ones marked; the rest depend on your family and income, so subtract any you qualify for from the estimate.

Credit Amount Who gets it In calculator
Scholarship granting organization credit 50% of the donation, up to $1,000 ($2,000 joint) Donors to an eligible scholarship granting organization No

Oklahoma Income Tax Brackets (2026)

Tax RateSingle FilerMarried Filing Jointly
0%$0 – $3,750$0 – $7,500
2.5%$3,750 – $4,900$7,500 – $9,800
3.5%$4,900 – $7,200$9,800 – $14,400
4.5%Over $7,200Over $14,400
Standard Deduction
$6,350 single · $12,700 joint
Personal exemption
$1,000 single · $2,000 joint

2026 update:Effective 1/1/2026. Oklahoma collapsed six brackets into three (2.5% / 3.5% / 4.5%) under HB 2764.

Brackets shown are marginal: each rate applies only to the portion of taxable income within that bracket, not your total income. Taxable income equals gross wages minus pre-tax deductions, the standard deduction, and the personal exemption.

Filing and paying Oklahoma income tax

Return
Form 511 for residents, due April 15.
Withholding
Employers use the Tax Commission's 2026 withholding tables (Packet OW-2), revised for the new rates, with Form OK-W-4.

To see how Oklahoma sits against every other state on top rate, bracket count and standard deduction, see state income tax rates for 2026 — all 51 jurisdictions in one sortable table.

How Oklahoma Income Tax Compares to Neighboring States

Total income tax (federal + state) on a $100,000 annual salary in 2026, single filer using the standard deduction:

State State Tax Total Income Tax vs. Oklahoma
Oklahoma (here) $3,955 $17,125 —
Texas $0 $13,170 -$3,955
New Mexico $3,569 $16,739 -$385
Colorado $3,692 $16,862 -$263
Kansas $4,780 $17,950 +$826
Missouri $3,670 $16,840 -$285

A negative "vs." figure means that state collects less total income tax than Oklahoma. Federal portion is identical across states; only state tax varies.

Frequently Asked Questions

What is the Oklahoma state income tax rate for 2026?

Oklahoma state income tax for 2026 ranges from 0% on the lowest bracket to 4.5% on income above $7,200 (single filer). The top rate starts low enough that most full-time earners pay it on part of their income.

How much income tax will I pay in Oklahoma on a $100,000 salary?

For a single filer earning $100,000 in Oklahoma in 2026, expect approximately $13,170 in federal income tax and $3,955 in Oklahoma state income tax — for a total income tax of about $17,125, an effective rate of 17.1%. This excludes FICA (Social Security and Medicare), which adds roughly 7.65% on top.

What are Oklahoma's income tax rates for 2026?

0% on the first $3,750 of taxable income, 2.5% on the next $1,150, 3.5% on the next $2,300, and 4.5% above $7,200 for single filers; joint bands are doubled.

Will Oklahoma cut its income tax again?

Possibly. Rates fall 0.25 percentage point each time the State Board of Equalization certifies enough revenue growth, starting with a test in December 2026. A cut would take effect the following January at the earliest.

What is the Oklahoma standard deduction?

$6,350 single and $12,700 joint, plus a $1,000 exemption per person.

Can I deduct federal income tax in Oklahoma?

No. The law expressly bars a deduction for federal income taxes.

For the preferential federal rates on long-term gains, see the Capital Gains Tax Calculator. For the federal brackets, standard deduction, and Social Security wage base that sit underneath this state calculation, see 2026 Tax Calculators.

More Oklahoma Calculators

Oklahoma Paycheck Calculator
Per-paycheck take-home after federal and state income tax and FICA.
Oklahoma Sales Tax
Oklahoma state and city sales tax rates, with a calculator.

All-States Income Tax

The general income tax calculator with every U.S. state.

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