Oklahoma Income Tax Guide

0% to 4.5% in 2026House Bill 2764 removed lower brackets and reduced the remaining rates.

$6,350 single deductionThe standard deduction remains frozen at $12,700 joint and $9,350 head of household.

Regular exemptions remainThe estimate includes taxpayer, joint-spouse, and supported-dependent amounts.

Updated August 24, 2026

Oklahoma AGI is simplifiedThe estimate subtracts the frozen standard deduction and regular exemptions from supported income.

The 2026 schedule is appliedSingle/separate filers receive a $3,750 zero band; joint/head filers receive $7,500 before 2.5%, 3.5%, and 4.5%.

Regular exemptions are includedOne $1,000 amount is included per taxpayer or joint spouse and supported qualifying child.

Retirement exclusions are outsideIncome type and age determine Oklahoma retirement subtractions.

Credits are excludedChild care, earned income, sales tax relief, and other credits require fuller eligibility data.

Is Oklahoma's 2026 top rate 4.5%?Yes. The enacted schedule reduces the top marginal rate from 4.75%.

Did the lower brackets disappear?Yes. The new schedule begins with a zero-rate band and retains 2.5%, 3.5%, and 4.5%.

Did the standard deduction increase?No. Oklahoma's regular amounts remain frozen at their listed levels.

Are dependent exemptions included?Yes, using the qualifying-child count as a simplified $1,000-per-dependent amount.

Is retirement income excluded?Not automatically; eligibility depends on income type and filer facts.

Is this Form 511?No. It is a planning estimate without every adjustment or credit.

How Oklahoma taxes work