Income Tax for Oklahoma (2026)

How This Calculator Works in Oklahoma

This calculator applies Oklahoma's 2026 tax brackets and rates to estimate your state income tax liability. Enter your income and filing status to see your marginal rate, effective rate, and estimated tax owed.

Oklahoma Overview

Oklahoma levies a progressive income tax with a top rate of 4.75%, though the top bracket kicks in at a very low threshold (~$7,200), making it functionally similar to a flat tax for most earners. The state does not tax Social Security benefits or military retirement pay. Oklahoma's oil and gas severance taxes provide significant state revenue, keeping the income tax rate moderate relative to neighboring states.

How Oklahoma Compares

Oklahoma's top income tax rate of 4.75% compares to Texas at 0% and Kansas at 5.7%. The rate differences can meaningfully impact take-home pay for workers near state borders.

Oklahoma's income tax rate of 4.75% compares to a national average of approximately 5.04%. This is below the national average.

Tips for Oklahoma Residents

• 1Oklahoma's top income tax rate is 4.75% on income over approximately $7,200 (single), meaning the top rate applies to almost all taxable income.
• 2Oklahoma does not tax Social Security benefits and offers a $10,000 deduction for retirement income for those 65+.
• 3The state allows a deduction for qualifying two-income married couples to reduce the marriage penalty.
• 4Oklahoma has a 4.5% state sales tax plus local additions up to ~6%, for combined rates that can reach 11% in some areas.
• 5Military retirement pay is 100% exempt from Oklahoma income tax.

Frequently Asked Questions