Oklahoma Resident Income Tax Return
Oklahoma residents are required to file an individual income tax return if they have income subject to Oklahoma state taxation. The primary form used for this purpose is Form 511, which is available for both residents and part-year residents. Nonresidents with gross income from Oklahoma sources of $1,000 or more must file Form 511-NR.
What Is Considered Oklahoma Source Income?
According to Oklahoma tax regulations, income taxable to nonresidents includes:
- Salaries, wages, and commissions for work performed in Oklahoma.
- Income from an unincorporated business, profession, or enterprise conducted in Oklahoma.
- Distributive share of the Oklahoma part of partnership, estate, or trust income, gains, losses, or deductions.
- Distributive share from Subchapter S corporations doing business in Oklahoma.
Filing Requirements
Nonresidents must file Form 511-NR if they have at least $1,000 in gross income from Oklahoma sources. If the income is less than $1,000, they may still need to file Schedule 511-NR-1 to report federal and Oklahoma-specific income details.
Tax Calculation Method
To calculate the tax from the tax table:
- Estimate your income from Oklahoma sources.
- Divide this amount by the total income (line 1 on Form 511-NR).
- Multiply the resulting percentage by the base tax (line 12).
- Enter the result on line 13 as your “Tax from Tax Table.”
2025 Oklahoma Income Tax Table
The tax table for 2025 provides tax amounts based on filing status and taxable income. For example:
- Single filers with taxable income of $33,000 to $35,000 have a corresponding tax amount.
- Married filing jointly with taxable income of $72,000 to $74,000 have a specific tax rate.
- Head of household filers with taxable income of $88,000 to $90,000 are taxed accordingly.
These values are derived from the official Oklahoma tax tables provided in Form 511-NR instructions.
Online Filing Options
Oklahoma offers fast, free, and 24/7 online filing services through OKTAP at oktap.tax.ok.gov. Taxpayers can also use software tools that guide them through adding Form 511 during state tax return preparation.
Source:
Form 511 - Individual Income Tax Return
Form 511-NR - Part-Year Resident and Nonresident Income Tax Return
Form OW-8-P-SUP-I - Supplemental Instructions
Disclaimer: Always verify information with official Federal or State Department of Revenue Forms and Instructions.