Oklahoma State Income Tax 2026 - Standard Deduction and Brackets
Oklahoma's 2026 income tax schedule now tops out at 4.5%. The old 0.25% to 4.75% six-bracket schedule applies to earlier tax years, not the current 2026 planning schedule.
Use the statutory taxable-income brackets after Oklahoma deductions. Payroll withholding tables are useful for paycheck withholding, but they are not the same thing as tax-return bracket thresholds.
Oklahoma Standard Deduction Guidance
| Filing status | Oklahoma standard deduction | Federal 2026 standard deduction | OK as % of federal |
|---|---|---|---|
| Single | $6,350 | $16,100 | 39% |
| Married filing separately | $6,350 | $16,100 | 39% |
| Head of household | $9,350 | $24,150 | 39% |
| Married filing jointly / qualifying surviving spouse | $12,700 | $32,200 | 39% |
These deduction values come from current Oklahoma Form 511 guidance used by the calculator. Check the latest OTC packet before filing a return.
Oklahoma Tax Brackets 2026
| Filing status group | Oklahoma taxable income | Rate |
|---|---|---|
| Single / married filing separately | $0 to $3,750 | 0% |
| Single / married filing separately | $3,750 to $4,900 | 2.5% |
| Single / married filing separately | $4,900 to $7,200 | 3.5% |
| Single / married filing separately | Over $7,200 | 4.5% |
| MFJ / head of household / qualifying surviving spouse | $0 to $7,500 | 0% |
| MFJ / head of household / qualifying surviving spouse | $7,500 to $9,800 | 2.5% |
| MFJ / head of household / qualifying surviving spouse | $9,800 to $14,400 | 3.5% |
| MFJ / head of household / qualifying surviving spouse | Over $14,400 | 4.5% |
Itemize vs Standard Deduction
Renter with no major itemized deductions
Likely starting point: Oklahoma standard deduction
Usually cleaner unless medical, charitable, or other itemized deductions are unusually high.
Single homeowner with mortgage interest and property tax
Likely starting point: Compare both
Oklahoma standard deduction is much lower than the federal standard deduction, so itemizing can matter on the state return even when federal itemizing does not.
Married homeowners with mortgage interest, SALT, and charity
Likely starting point: Compare both
Use actual Schedule A inputs and Oklahoma adjustments instead of assuming the federal result controls the state result.
Self-employed filer
Likely starting point: Separate business deductions first
Business expenses affect income before the personal standard-vs-itemized deduction choice.
Retiree with Social Security and IRA income
Likely starting point: Check Oklahoma subtractions
Social Security is exempt from Oklahoma income tax; pension and retirement exclusions depend on Form 511 instructions and filing facts.
Important Oklahoma-Specific Notes
Social Security
Oklahoma exempts Social Security benefits from state income tax.
Retirement and pension income
Some retirement income can qualify for Oklahoma subtractions. Use the current Form 511 instructions for exact limits and eligibility.
Capital gains
Oklahoma generally taxes capital gains as ordinary income, but specific Oklahoma-source gains may qualify for state deductions. Verify against the current OTC instructions before relying on the exclusion.
FAQ
What is the Oklahoma standard deduction for 2026?
Levyio uses the current Oklahoma Form 511 standard deduction guidance: $6,350 for single or married filing separately, $9,350 for head of household, and $12,700 for married filing jointly or qualifying surviving spouse.
What are the Oklahoma state income tax brackets in 2026?
For tax year 2026, Oklahoma uses four statutory rates: 0%, 2.5%, 3.5%, and 4.5%. Single and married filing separately filers reach the top rate above $7,200 of Oklahoma taxable income. Married filing jointly, head of household, and qualifying surviving spouse filers reach it above $14,400.
Should I itemize or take the Oklahoma standard deduction?
Compare both if your mortgage interest, property tax, charitable giving, or medical deductions are close to the Oklahoma standard deduction. Oklahoma taxable income can differ from federal taxable income because the state standard deduction is lower than the federal amount.
Does Oklahoma tax Social Security?
Oklahoma exempts Social Security benefits from state income tax. Other retirement income may qualify for separate exclusions or may remain taxable depending on the current Form 511 instructions and the taxpayer facts.
Official Sources
- Oklahoma Tax Commission - 2026 Income Tax Withholding Tables
- 68 O.S. Sec. 2355 - Oklahoma income tax rate statute
- Oklahoma Form 511 packet - standard deduction guidance
- Oklahoma Tax Commission - Individuals
Related Resources
- Oklahoma Income Tax Calculator
- 2026 Oklahoma Single Filer Brackets
- 2026 Oklahoma MFJ Brackets
- State Tax Migration Calculator
Data reviewed and updated 2026-05-12. This page is for planning and calculator context, not individualized tax advice.