Oklahoma State Income Tax Calculator
Calculate your 2026 Oklahoma state income tax. See your bracket breakdown, effective rate, and how Oklahoma compares to neighboring states.
Your Tax Inputs
Oklahoma’s 2026 schedule has a zero band followed by 2.5%, 3.5% and 4.5%; future rate triggers are not assumed. The basic standard deductions are $6,350 single, $12,700 joint and $9,350 head of household, and require the federal standard method. Federal itemizers must supply the reviewed Oklahoma allowed total after addbacks and the applicable $17,000 cap, with charity/medical exceptions. Eligible personal/dependent and blindness exemptions are $1,000 each. The $1,000 age-65 exemption requires federal AGI not exceeding $15,000 single, $25,000 joint or $19,000 head of household. State AGI does not substitute for federal AGI. Review allowed credits separately. Payments, withholding, mixed-source proration and final-return rounding are not modeled.
Oklahoma Legislature — HB 2764, 2026 rates · Oklahoma OMES — FY27 budget, 2026–27 basic deductions · Oklahoma Tax Commission — personal, age and blindness exemptions · Oklahoma Tax Commission — federal method and itemized restrictionsThe annual amount is gross income minus entered pre-tax deductions and modeled federal and state income tax. Monthly and weekly amounts divide it by 12 and 52. These allocations exclude Social Security and Medicare (FICA), local taxes, other payroll taxes, and unmodeled paycheck deductions. They do not estimate paycheck take-home or actual withholding.
Effective State Income Tax Rate vs Neighboring States
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About Oklahoma state taxes (Tax year 2026)
Oklahoma’s 2026 schedule has a zero band followed by 2.5%, 3.5% and 4.5%; future rate triggers are not assumed. The basic standard deductions are $6,350 single, $12,700 joint and $9,350 head of household, and require the federal standard method. Federal itemizers must supply the reviewed Oklahoma allowed total after addbacks and the applicable $17,000 cap, with charity/medical exceptions. Eligible personal/dependent and blindness exemptions are $1,000 each. The $1,000 age-65 exemption requires federal AGI not exceeding $15,000 single, $25,000 joint or $19,000 head of household. State AGI does not substitute for federal AGI. Review allowed credits separately. Payments, withholding, mixed-source proration and final-return rounding are not modeled.
Groceries are exempt from state sales tax as of 2024. Prescription drugs are exempt.
Oklahoma's top income tax rate of 4.5% is near the national average, but its combined sales tax rate of 9.06% is among the highest in the nation due to extensive local taxes.
Filing in Oklahoma: returns for tax year 2026 are administered by the Oklahoma Tax Commission and are generally filed in 2027 by the federal April deadline unless Oklahoma declares a state-specific extension. Tax type on this return: Progressive. Top marginal rate: 4.5%. State sales-tax rate: 4.5%. For the most current contact info, see the Federation of Tax Administrators directory.
Oklahoma — What is Oklahoma's income tax rate? Oklahoma’s four 2026 rates are 0%, 2.5%, 3.5% and 4.5%. The joint/head-of-household schedule differs from the single schedule. Future revenue-triggered reductions are not assumed. The state and federal income bases, deduction method and exemption eligibility require review.
Oklahoma — Does Oklahoma tax groceries? No, Oklahoma eliminated its state sales tax on groceries in 2024. However, local jurisdictions may still tax groceries.
Oklahoma — How does Oklahoma's sales tax compare? Oklahoma's combined state and local sales tax averaged 9.06% in July 2026. Local cities and counties add substantial taxes to the state rate.
How this page is reviewed
See methodology, assumptions & sources
| Risk tier | High YMYL |
|---|---|
| Author | Calculover Editorial Team Tax education |
| Editorial owner | Calculover Tax & Payroll Desk State-tax methodology owner |
| Reviewer | Calculover Editorial Review Government-source and limitation review |
| Last reviewed | 2026-11-06 |
| Last verified | 2026-11-06 |
| Data effective date | 2026-01-01 |
| Jurisdiction | Oklahoma |
Methodology
These pages estimate annual state income tax for the selected 2026 jurisdiction and filing status. The route's coverage panel identifies the supported income basis, deductions, credits and exclusions.
Assumptions
- Enter the income basis and eligible pre-tax deductions requested by the calculator; gross wages, federal AGI and state AGI are not interchangeable.
- Some methods require confirmed state facts or explicit projection assumptions. An unavailable component is not zero tax.
Limitations
- The estimate excludes unmodeled income, adjustments, local taxes and special filing situations. Utah's indexed-credit assumptions remain provisional while final 2026 instructions are pending.
- Annual liability differs from withholding and paycheck take-home. Confirm the current official forms and source versions for a complete return.
Sources
- State Tax Rates, Federation of Tax Administrators
- State Individual Income Tax Rates and Brackets, Tax Foundation
- State Government Resources, Internal Revenue Service
Professional guidance: This page is for state-tax education only and is not tax, legal, financial, or investment advice. State tax decisions and multi-state filing should be reviewed with a CPA or enrolled agent licensed in the relevant states.