🇺🇸 Oklahoma Income Tax — 2026 UPDATE

Oklahoma Income Tax Rates & Brackets (Tax Year 2025 — Filed in 2026)

⚠️Informational only — not legal or tax advice.

Tax year covered: 2025 (returns filed in 2026)
Applies to: Income earned January 1 – December 31, 2025
Returns filed: January – April 2026
Last verified: February 19, 2026

Oklahoma State Income Tax

Table of Contents

Quick Reference

Does Oklahoma have income tax? Yes
Tax structure: Progressive (6 brackets)
Tax rates: 0.25% to 4.75%
Standard deduction (Single / Married Filing Separately): $6,350
Standard deduction (Married Filing Jointly / Qualifying Surviving Spouse): $12,700
Standard deduction (Head of Household): $9,350
Personal exemption: $1,000 per exemption claimed
Local income tax: No — Oklahoma does not permit local income taxes
Official source: https://oklahoma.gov/tax/individuals.html

⚠️ Important legislative note — Tax Year 2026: House Bill 2764, signed in 2025, reduces Oklahoma’s top marginal income tax rate from 4.75% to 4.5% and restructures six brackets into three brackets, effective for Tax Year 2026 (returns filed in 2027). This page covers Tax Year 2025 only; the current six-bracket structure with a top rate of 4.75% still applies.
Source: https://oklahoma.gov/content/dam/ok/en/tax/documents/resources/publications/legislation/2025LegislativeUpdate.pdf

Key Takeaways

  • Residents: Oklahoma residents pay state income tax on income from all sources (with limited exceptions for out-of-state business/property income for which a credit is available)
  • Non-residents: Non-residents pay Oklahoma income tax only on Oklahoma-source income (wages earned in Oklahoma, Oklahoma business income, Oklahoma rental/royalty income, etc.)
  • Tax rates: Progressive system with 6 brackets from 0.25% to 4.75% — identical bracket structure for all filing statuses, with wider dollar thresholds for joint filers
  • Local income tax: Oklahoma does not authorize local income taxes — only state-level tax applies
  • Reciprocity: Oklahoma does not have formal reciprocal tax agreements with other states; residents who pay taxes to another state may claim Oklahoma Form 511-TX credit
  • Primary forms: Form 511 (residents), Form 511-NR (nonresidents and part-year residents)

Quick Questions About Oklahoma Income Tax

What is the Oklahoma income tax rate for 2025?
Oklahoma has a progressive income tax with rates ranging from 0.25% to 4.75% across six brackets. The rate you pay depends on your filing status and taxable income level.

Does Oklahoma have state income tax?
Yes. Oklahoma imposes an individual income tax on residents (on all income) and nonresidents (on Oklahoma-source income only). The top rate for Tax Year 2025 is 4.75%.

What are the income tax brackets in Oklahoma?
For Tax Year 2025, Oklahoma has six tax brackets ranging from 0.25% to 4.75%. See the complete bracket tables below.

Is Social Security taxed in Oklahoma?
No. Oklahoma fully exempts Social Security benefits from state income tax.
Source: https://oklahoma.gov/tax/helpcenter/income-tax.html

Does Oklahoma tax retirement income?
Oklahoma taxes most retirement income but provides an exemption of up to $10,000 per year for qualifying retirement benefits (pension, 401(k), IRA distributions). Military retirees may exclude the greater of $10,000 or 75% of their military retirement income.
Source: https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Do I need to file an Oklahoma income tax return?
Residents must file if their gross income exceeds the standard deduction plus personal exemption. Nonresidents must file if they have $1,000 or more in gross income from Oklahoma sources.
Source: https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Oklahoma Income Tax Rates and Brackets (Tax Year 2025 — Filed in 2026)

The following tax rates and brackets apply to income earned in Tax Year 2025, reported on returns filed in 2026. These rates are unchanged from Tax Year 2024.

Rate Snapshot
Tax Attribute Amount / Status
Lowest Tax Rate 0.25%
Highest Tax Rate 4.75%
Tax Structure Progressive
Number of Brackets 6
State Income Tax Yes
Local Income Tax No
Standard Deduction (Single / MFS) $6,350
Standard Deduction (MFJ / Qualifying Surviving Spouse) $12,700
Standard Deduction (Head of Household) $9,350
Personal Exemption (per exemption) $1,000

Source: 2025 Form 511, Oklahoma Resident Income Tax Return — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/software-developers/Dev511-25Grid.pdf
Source: 2025 Oklahoma Tax Rates confirmed via Form 573 (Farm Income Averaging) — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/software-developers/Dev573-25.pdf

Single Filers and Married Filing Separately
Taxable Income Pay Plus Over
$0 – $1,000 $0.00 0.25% $0
$1,001 – $2,500 $2.50 0.75% $1,000
$2,501 – $3,750 $13.75 1.75% $2,500
$3,751 – $4,900 $35.63 2.75% $3,750
$4,901 – $7,200 $67.25 3.75% $4,900
$7,201 and above $153.50 4.75% $7,200
Married Filing Jointly, Head of Household, and Qualifying Surviving Spouse
Taxable Income Pay Plus Over
$0 – $2,000 $0.00 0.25% $0
$2,001 – $5,000 $5.00 0.75% $2,000
$5,001 – $7,500 $27.50 1.75% $5,000
$7,501 – $9,800 $71.25 2.75% $7,500
$9,801 – $14,400 $134.50 3.75% $9,800
$14,401 and above $307.00 4.75% $14,400

Source: 2025 Oklahoma Tax Rates — Form 573 (official OTC rate tables for Tax Years 2024–2025) — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/software-developers/Dev573-25.pdf

Note on bracket structure: Oklahoma does not use the same bracket doubling method as federal taxes. The bracket thresholds for joint filers and head of household are approximately double the single-filer thresholds, but not an exact doubling in all cases.

Standard Deduction and Exemptions

Standard Deduction (Tax Year 2025)
Filing Status Standard Deduction
Single $6,350
Married Filing Separately $6,350
Married Filing Jointly $12,700
Qualifying Surviving Spouse $12,700
Head of Household $9,350

Oklahoma standard deductions did not change from Tax Year 2024 to Tax Year 2025.

Source: 2025 Form 511, Line 10 instructions — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/software-developers/Dev511-25Grid.pdf

Personal Exemptions

Oklahoma allows a personal exemption of $1,000 per exemption claimed on the return. Exemptions include:

  • One exemption for the taxpayer
  • One exemption for the spouse (if filing jointly)
  • One additional exemption if the taxpayer is age 65 or older
  • One additional exemption if the taxpayer is legally blind
  • One exemption per qualifying dependent

Source: 2025 Form 511, Line 11 instructions — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Itemized Deductions

Oklahoma allows itemized deductions only if the taxpayer itemized deductions on their federal return. Oklahoma itemized deductions start with federal itemized deductions (Schedule A) with these modifications:

  • State and local income or sales taxes deducted on the federal return must be added back to Oklahoma itemized deductions
  • Oklahoma itemized deductions are capped at $17,000 (this cap does not apply to charitable contributions or medical expenses)

Source: Schedule 511-D instructions — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Statutory Authority

Oklahoma’s individual income tax is authorized under the following legal framework:

Constitutional Authority:

  • Oklahoma Constitution, Article V — general legislative power to impose taxes
  • Oklahoma Constitution, Article X, Section 12 — limitations on income taxation

Statutory Authority:

  • Oklahoma Income Tax Act — 68 Oklahoma Statutes (OS) § 2351 et seq.
  • Individual income tax rates — 68 OS § 2355
  • Resident income definition — 68 OS § 2358
  • Nonresident sourcing rules — 68 OS § 2358
  • Deductions and adjustments — 68 OS § 2358
  • Credits — 68 OS § 2357 et seq.
  • Link to Oklahoma Statutes: https://www.oscn.net/applications/oscn/index.asp?level=1&title=68

Administrative Regulations:

Legislative History:

  • Oklahoma income tax originally enacted: 1915
  • Current bracket structure effective: Tax Year 2022 (restructured from prior brackets)
  • Top rate reduced from 5.25% to 5.0% (2022), then from 5.0% to 4.75% (Tax Year 2022 forward)
  • Tax Year 2026 reform: HB 2764 (2025) — reduces top rate to 4.5%, consolidates 6 brackets into 3

This page compiles information directly from these statutory and regulatory authorities as implemented by the Oklahoma Tax Commission.

Source: Oklahoma Legislature — https://www.oscn.net | Oklahoma Tax Commission — https://www.tax.ok.gov

Who Must File Oklahoma Income Tax

esidents

An Oklahoma resident is a person domiciled in Oklahoma for the entire tax year. “Domicile” is the place established as a person’s true, fixed, and permanent home — the place you intend to return to whenever you are away.

Every resident individual must file an Oklahoma income tax return if their gross income from both within and outside Oklahoma exceeds the standard deduction plus personal exemption.

Practical Filing Thresholds for Tax Year 2025
Filing Status Standard Deduction +1 Personal Exemption = Approximate Filing Threshold
Single $6,350 $1,000 $7,350
Married Filing Jointly $12,700 $2,000 (taxpayer + spouse) $14,700
Married Filing Separately $6,350 $1,000 $7,350
Head of Household $9,350 $1,000 $10,350

Note: Additional exemptions (age 65+, legally blind, dependents) increase the threshold. The OTC’s official Charts A and B in the Form 511 packet provide exact thresholds by status and dependents.

Even if not required to file, residents should file if they had Oklahoma tax withheld, made estimated tax payments, or qualify for refundable credits (such as the Earned Income Credit or Sales Tax Relief Credit).

Source: 2025 Form 511 Packet, “Who Must File?” — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Part-Year Residents

A part-year resident is an individual whose domicile was in Oklahoma for part of the tax year (less than 12 months).

  • During the period of Oklahoma residency: filing requirements are the same as a resident
  • During the period of nonresidency: an Oklahoma return is also required if the taxpayer has gross income from Oklahoma sources of $1,000 or more

Part-year residents use Form 511-NR.

Source: https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf

Non-Residents

A nonresident is an individual whose domicile was not in Oklahoma for any portion of the tax year.

Every nonresident must file an Oklahoma income tax return if they have gross income from Oklahoma sources of $1,000 or more (with certain exceptions under the Pass-Through Entity Tax Equity Act of 2019 — 68 OS § 2355.1P-1 et seq.).

Nonresidents use Form 511-NR.

Source: https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf


What Is Oklahoma Source Income?

Oklahoma taxes nonresidents only on income from Oklahoma sources, defined by 68 OS § 2358 as:

  1. Salaries, wages, and commissions for work physically performed in Oklahoma
  2. Business income from activities conducted in Oklahoma (including LLCs, partnerships, S-corps)
  3. Distributive share of Oklahoma partnership, estate, or trust income
  4. Net rents and royalties from real and tangible personal property located in Oklahoma
  5. Capital gains from sales of real and tangible personal property located in Oklahoma
  6. Gambling winnings from Oklahoma sources

Source: 68 OS § 2358; 2025 Form 511-NR Packet — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf

What Income Is Taxable in Oklahoma

Fully Taxable Income (Residents — All Sources)

Oklahoma residents are taxed on all income reported on the federal return, except:

  • Income from real and tangible personal property located in another state
  • Income from business activities conducted in another state
  • Gains/losses from the sale or exchange of real property in another state

The following types of income are always taxable for Oklahoma residents regardless of where earned:

  • Wages, salaries, and commissions (even if paid by an out-of-state employer)
  • Self-employment income
  • Interest and dividends (non-business)
  • Capital gains
  • Business income from Oklahoma activities
  • Rental income from Oklahoma property
  • Retirement account distributions (401(k), traditional IRA — see exemption below)
  • Oklahoma gambling winnings

Source: 2025 Form 511 Packet, “Resident Income” — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Social Security Benefits — FULLY EXEMPT

Oklahoma fully exempts Social Security benefits from state income tax. No portion of Social Security income is subject to Oklahoma income tax, regardless of income level.

Source: https://oklahoma.gov/tax/helpcenter/income-tax.html

Retirement Income — Partial Exemption

Oklahoma provides a retirement income exemption of up to $10,000 per year for qualifying retirement benefits. This exemption applies to:

  • Pension income
  • 401(k) distributions
  • Traditional IRA distributions
  • Other qualifying retirement plan distributions

For taxpayers with multiple qualifying retirement income sources, the total combined exemption is $10,000 per year.

Military retirement pay receives more favorable treatment — see the Military Personnel section.

Source: 2025 Form 511 Packet, Schedule 511-B — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Active-Duty Military Pay — FULLY EXEMPT

100% of income received as salary or compensation by an Oklahoma resident who is a member of any component of the Armed Forces of the United States (including Reserve and National Guard) may be deducted from taxable income.

Source: 68 OS § 2358(E)(5)(a); https://oklahoma.gov/okstep/claims-benefits/state-benefits.html

Military Retirement Pay — Large Exemption

Military retirees may exclude from Oklahoma taxable income an amount equal to the greater of:

  • $10,000, or
  • 75% of retirement income received

Example: A military retiree with $40,000 in annual retirement pay can exclude $30,000 (75% × $40,000), leaving only $10,000 subject to Oklahoma income tax.

Source: 68 OS § 2358(E)(5)(b); https://oklahoma.gov/veterans/benefits.html

Capital Gains — Oklahoma Capital Gain Deduction

Oklahoma allows a deduction for qualifying capital gains from the sale of certain Oklahoma property or Oklahoma-headquartered businesses. To qualify, the asset must have been held for the required period (at least 5 years for real/tangible property in Oklahoma; at least 2 years for stock in an Oklahoma company).

Source: Schedule 511-A instructions — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Tribal Income — Exempt for Qualifying Members

Income earned by an enrolled tribal member whose principal residence is in “Indian Country” (as defined by OAC § 710:50-15-2(a)(1)) within the jurisdiction of the member’s own tribe may be deducted from Oklahoma taxable income.

Source: OAC § 710:50-15-2; 2025 Form 511 Packet, Schedule 511-B line A10 — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Oklahoma 529 College Savings Plan

Contributions to an Oklahoma 529 College Savings Plan (Oklahoma College Savings Plan) or OklahomaDream 529 Account are deductible from Oklahoma adjusted gross income.

Source: 2025 Form 511-NR, Schedule 511-NR-C — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf

Oklahoma Income Tax Credits

Oklahoma offers the following tax credits for individual taxpayers:

1. Oklahoma Earned Income Credit (EIC)

Oklahoma’s Earned Income Credit is equal to 5% of the federal Earned Income Tax Credit (calculated using 2020 federal EIC requirements). The credit is refundable beginning with Tax Year 2022.

  • Applies to qualifying residents and part-year residents
  • Nonresidents do not qualify
  • Must complete Form 511-EIC and attach to the return

Source: 2025 Form 511-EIC — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-EIC.pdf

2. Child Care / Child Tax Credit

Residents, part-year residents, and nonresident military members with federal Adjusted Gross Income of $100,000 or less who are allowed a child care or child tax credit on their federal return may claim an Oklahoma credit equal to the greater of:

  • 20% of the federal child care expenses credit, or
  • 5% of the federal child tax credit (including the refundable portion)

Source: 2025 Form 511-NR Packet, Schedule 511-NR-D — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf

3. Credit for Taxes Paid to Another State (Form 511-TX)

Oklahoma residents who pay income tax to another state on income that is also taxable in Oklahoma may claim a credit against Oklahoma tax. The credit prevents double taxation on the same income.

The credit is limited to the lesser of:

  • The tax actually paid to the other state (attributable to the income also taxed in Oklahoma), or
  • The proportional Oklahoma tax on that same income

A separate Form 511-TX must be filed for each state to which taxes were paid, along with a complete copy of the other state’s return.

Nonresidents do not qualify for this credit.

Source: Form 511-TX — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-TX.pdf

4. Sales Tax Relief Credit (Form 538-S)

A refundable credit available to lower-income Oklahoma residents to offset sales taxes paid. Eligibility requires:

  • Oklahoma resident for the entire year, AND
  • Household gross income of $50,000 or less, AND
  • At least one of the following: qualifying dependent, age 65+, or physical disability constituting a handicap to employment

Source: 2025 Form 538-S — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/538-S.pdf

5. Low Income Property Tax Credit (Form 538-H)

A credit of up to $200 for qualifying elderly or disabled Oklahoma homeowners. Eligibility requirements:

  • Age 65+ or totally disabled
  • Head of a household
  • Oklahoma resident and domiciled in Oklahoma for the entire preceding calendar year
  • Gross household income of $12,000 or less for the preceding year

Source: 2025 Form 511 Packet — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

6. Parental Choice Tax Credit (Private School)

A refundable income tax credit between $5,000 and $7,500 for eligible Oklahoma taxpayers who pay qualified expenses (tuition and fees) to an eligible private school on behalf of an eligible student. The Oklahoma Tax Commission can authorize up to $250 million of credits for the 2025–2026 school year.

Priority is given to families with combined federal AGI not exceeding $150,000.

Source: https://oklahoma.gov/tax/helpcenter/income-tax.html

7. Electric Vehicle Charging Tax Credit (NEW for TY 2025)

A new tax credit added for Tax Year 2025 related to electric vehicle charging infrastructure. Details are available on Form 511-CR.

Source: 2025 Form 511 Packet (What’s New) — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf | Form 511-CR available at: https://www.tax.ok.gov

8. Credit for Electricity Generated by Zero-Emission Facilities (Form 578)

A refundable credit for qualifying electricity generation. Any credits earned but not used may be refunded at 85% of face value.

Source: 2025 Form 511, Line credits section — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/software-developers/Dev511-25Grid.pdf

Additional credits: Oklahoma offers numerous business and investment-related tax credits available via Form 511-CR. These include credits for rural small businesses, coal mining, aerospace engineers, agricultural processing, and more. A full list of credits available on Form 511-CR can be found on the OTC website at https://www.tax.ok.gov.

Filing Deadlines

Regular Deadline

April 15, 2026 for Tax Year 2025 paper returns.

April 20, 2026 for Tax Year 2025 returns filed electronically (e-filed returns receive an automatic 5-day extension). Any payment due with an electronically filed return must also be remitted electronically by April 20th; if payment is not remitted electronically, penalty and interest accrue from April 15th.

Extension

A valid federal extension automatically extends the due date of an Oklahoma return if no Oklahoma liability is owed. A copy of the federal extension must be attached to the Oklahoma return.

If an Oklahoma liability is owed, file Form 504-I (Oklahoma Individual Extension) by April 15, 2026. At least 90% of the Oklahoma tax liability must be paid by April 15, 2026 to avoid late payment penalties. Interest accrues from the original due date.

The extension grants additional time to file only — it is not an extension of time to pay.

Extension form: Form 504-I — available at https://www.tax.ok.gov

Estimated Tax Payments

Quarterly estimated tax payments are required if you expect your Oklahoma tax liability to exceed withholding by $500 or more and withholding is expected to be less than the smaller of:

  • 70% of the current year’s tax liability, or
  • The tax liability shown on the prior year’s return
Quarterly Due Dates for Tax Year 2026 Estimated Payments
Quarter Due Date
Q1 (January–March 2026) April 15, 2026
Q2 (April–May 2026) June 15, 2026
Q3 (June–August 2026) September 15, 2026
Q4 (September–December 2026) January 15, 2027

Exception for farmers: If at least 66.67% of gross income is from farming, estimated payments are not required.

Estimated tax form: Form OW-8-ES — available at https://www.tax.ok.gov

Source: 2025 Form 511 Packet, “Estimated Income Tax” — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf
Source: Oklahoma.gov Pay Taxes page — https://oklahoma.gov/tax/individuals/pay-taxes.html

Penalties and Interest

Late Payment Penalty

If at least 90% of the tax liability is not paid by the original due date, a penalty of 5% is charged on the unpaid amount.

Source: 2025 Form 511, Line 41(a) — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/software-developers/Dev511-25Grid.pdf

Interest on Unpaid Tax

Interest accrues at 1.25% per month on unpaid tax from the date of delinquency until paid.

Source: 2025 Form 511, Line 41(b); https://oklahoma.gov/tax/individuals/pay-taxes.html

Underpayment of Estimated Tax

Taxpayers who fail to make timely estimated tax payments may be subject to interest on the underpayment. Use Form OW-8-P if you failed to pay or underpaid estimated taxes.

Source: https://oklahoma.gov/tax/individuals/pay-taxes.html

Safe Harbor

No estimated tax penalty applies if total estimated payments and withholding equal at least the smaller of:

  • 70% of the current year’s total tax liability, or
  • 100% of the tax liability shown on the prior year’s return (12-month return)

Source: 2025 Form 511-NR Packet, “Estimated Income Tax” — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf

Special Considerations for Oklahoma Income Tax

Remote Workers and Multi-State Taxation

Living in Oklahoma, Working for an Out-of-State Employer

As an Oklahoma resident, you owe Oklahoma income tax on all income, regardless of where your employer is located. This is a fundamental principle of Oklahoma tax law: employer location does not determine tax obligation — residency does.

What this means in practice:

  • A remote worker living in Oklahoma for an employer headquartered in Texas, California, or any other state owes Oklahoma income tax on that income
  • Oklahoma withholding should be set up with your Oklahoma-based employer or managed through estimated tax payments
  • Wages earned outside Oklahoma are included in Oklahoma resident income, and credit for taxes paid to other states may be claimed on Form 511-TX

Example: An Oklahoma resident working remotely for a Dallas-based company owes Oklahoma income tax on their full salary. Since Texas has no income tax, there is no credit to claim — the full amount is taxable in Oklahoma.

Source: 2025 Form 511 Packet, “Resident Income” — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Working in Oklahoma, Living in Another State

Nonresidents who perform work physically in Oklahoma owe Oklahoma income tax on income earned from Oklahoma sources.

Physical Presence Rule: Income is sourced to Oklahoma based on where work is physically performed. If you travel to Oklahoma for work, the wages earned during those days are Oklahoma-source income.

Telecommuting from outside Oklahoma for an Oklahoma employer: If you are a nonresident who works remotely from your home state for an Oklahoma employer, your wages are generally not Oklahoma-source income, because the work is performed outside Oklahoma.

Source: 68 OS § 2358; https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf


⚠️ Interstate Tax Risk Indicator

Oklahoma remote workers commonly encounter dual taxation complications with the following states:

Working with these states requires careful planning:

  • New York — Applies the “convenience of the employer” rule; may tax nonresident income even if work is performed outside NY, if for the convenience of the employee
  • California — Aggressive residency auditing for extended work periods; may claim extended presence creates California tax obligations
  • Pennsylvania — 3,000+ local income tax jurisdictions; complex withholding requirements
  • New Jersey / Connecticut — Complex credit systems when working across state lines

Source: Form 511-TX instructions — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-TX.pdf | IRS Publication 505


“Convenience of the Employer” Rule

Oklahoma does NOT apply a “convenience of the employer” rule.

Oklahoma nonresidents are taxed only on income from work physically performed in Oklahoma. If a nonresident works remotely from their home state, even for an Oklahoma-based employer, Oklahoma does not claim the right to tax that income solely because the employer is in Oklahoma.

This is favorable for nonresidents working remotely for Oklahoma companies: their remote work income is not subject to Oklahoma tax.

Source: 68 OS § 2358 (sourcing rules based on physical performance of services) — https://www.oscn.net/applications/oscn/index.asp?level=1&title=68


Reciprocal Agreements

Oklahoma does NOT have formal reciprocal income tax agreements with other states.

Without reciprocity, if you live in one state and work in another, you are generally subject to tax in both states. The credit for taxes paid to other states (Form 511-TX) mitigates — but does not always eliminate — double taxation.

What to do without reciprocity:

  1. File a resident return in Oklahoma reporting all income
  2. File a nonresident return in the state where you physically work
  3. Claim the Form 511-TX credit on your Oklahoma return for taxes paid to the other state (for residents only; nonresidents do not qualify)

Source: Form 511-TX — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-TX.pdf


Multi-State Tax Filing for Oklahoma Residents

When earning income in multiple states as an Oklahoma resident:

  1. File a resident return (Form 511) in Oklahoma reporting all income from all sources
  2. File nonresident returns in other states where income was physically earned
  3. Claim the Credit for Taxes Paid to Another State (Form 511-TX) on your Oklahoma return

How the Form 511-TX credit works:

  • The credit applies only to income from personal services taxed by both Oklahoma and the other state
  • A separate Form 511-TX is required for each state
  • Attach a complete copy of the other state’s return and all W-2s

Forms required:

  • Oklahoma Form 511 (resident return — reports all income)
  • Oklahoma Form 511-TX (credit for taxes paid to other state)
  • Nonresident return in the other state

Source: Form 511-TX — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-TX.pdf


Tax Residency and Domicile in Oklahoma

Domicile Defined

Domicile is your permanent legal home — the place established as your true, fixed, and permanent home, and the place you intend to return to whenever you are away.

Key characteristics under Oklahoma law:

  • You can have only ONE domicile at a time
  • Domicile continues until you establish a new one elsewhere with intent to remain permanently
  • Temporary absences (work assignments, military service, schooling, vacations) do not change domicile

Factors establishing domicile in Oklahoma:

  • Where you maintain your primary residence
  • Where you register to vote
  • Where you obtain an Oklahoma driver’s license
  • Where you file a homestead exemption
  • Where your spouse and family reside
  • Where you maintain bank accounts and professional ties
  • Stated intent in legal documents (will, estate documents)

Source: 2025 Form 511-NR Packet, “Resident Defined” — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf

Oklahoma’s Residency Test

Oklahoma uses a domicile-based residency test (not a day-count / statutory residency test). You are an Oklahoma resident if you are domiciled in Oklahoma for the entire tax year.

Oklahoma does not impose a separate statutory residency rule based on days present in the state (unlike New York or California, which tax individuals present more than 183 days regardless of domicile). Oklahoma’s residency is based entirely on domicile + intent.

Practical implication: An out-of-state individual who spends significant time in Oklahoma for work but maintains domicile elsewhere is not automatically taxed as an Oklahoma resident — they are a nonresident taxed only on Oklahoma-source income.

Source: 2025 Form 511 Packet, “Resident Defined” — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Military Personnel

Servicemembers Civil Relief Act (SCRA)

Active duty military members stationed in Oklahoma due to military orders:

  • Do NOT become Oklahoma residents solely due to military orders
  • Pay income tax to their state of legal residence (domicile)
  • Military pay earned in Oklahoma by nonresident servicemembers is exempt from Oklahoma income tax

Source: 2025 Form 511-NR Packet, “Members of the Armed Forces” — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf

Military Spouses Residency Relief Act (MSRRA) and Veterans Benefits and Transition Act (VAEIA)

Under the Military Spouses Residency Relief Act and the Veterans Benefits and Transition Act of 2018, a nonresident spouse of a nonresident servicemember may be exempt from Oklahoma income tax on income earned in Oklahoma if:

  1. The servicemember is present in Oklahoma in compliance with military orders
  2. The spouse is in Oklahoma to be with the servicemember
  3. The spouse maintains the same domicile as the servicemember OR elects to use the servicemember’s state of residence for tax purposes

Veterans Auto and Education Improvement Act of 2022 (VAEIA): For any taxable year of marriage, the servicemember and their spouse may elect a state of residence for income tax purposes based on the servicemember’s residence, the spouse’s residence, or the servicemember’s permanent duty station.

Documentation required to claim this exemption:

  • Copy of servicemember’s military W-2
  • Copy of spouse’s W-2
  • Leave and Earnings Statement
  • Copies of federal income tax return
  • Copy of resident state’s return

Withholding exemption form: OW-9-MSE (Annual Withholding Tax Exemption Certification for Military Spouses) — available at https://www.tax.ok.gov

Source: https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf

Active-Duty Military Pay — Deduction for Oklahoma Residents

Oklahoma residents who are members of any component of the Armed Forces (including Reserve and National Guard) may deduct 100% of military pay from Oklahoma taxable income. This applies to active duty pay, Reserve pay, and National Guard pay — not military retirement pay.

Use Schedule 511-C (or 511-NR-C for nonresidents) to claim the military pay exclusion.

Source: 68 OS § 2358(E)(5)(a); Schedule 511-C — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Military Retirement Pay — Generous Exemption

Any individual retired from any component of the Armed Forces may exclude from Oklahoma taxable income an amount equal to the greater of:

  • 75% of military retirement income, or
  • $10,000

This exemption is reported on Schedule 511-A (Oklahoma Capital Gain Deduction and Retirement Income Exclusion) for residents, or Schedule 511-NR-A for nonresidents.

Example: Military retiree with $60,000 annual military retirement pay:

  • 75% exemption = $45,000 excluded
  • Remaining $15,000 subject to Oklahoma income tax

Source: 68 OS § 2358(E)(5)(b); https://oklahoma.gov/okstep/claims-benefits/state-benefits.html

What Military Members in Oklahoma DO Owe Tax On

Oklahoma-domiciled military members owe Oklahoma income tax on:

  • Non-military income (investment income, rental income, business income)
  • Income earned from non-military employment

Nonresident military members stationed in Oklahoma owe Oklahoma income tax on:

  • Civilian income earned from non-military employment in Oklahoma
  • Oklahoma-source business/rental income

Source: https://oklahoma.gov/tax/helpcenter/exemptions.html

Military FAQ

Frequently Asked Questions relating to Individual Income Tax Issues for Military can be found at: https://www.tax.ok.gov


Retirees

ocial Security Benefits — FULLY EXEMPT

Oklahoma does not tax Social Security benefits. 100% of Social Security income is exempt, regardless of income level or filing status.

Source: https://oklahoma.gov/tax/helpcenter/income-tax.html

Pension Income

Private and public pensions: Subject to Oklahoma income tax, but eligible for the $10,000 annual retirement income exemption described below.

Oklahoma public employee pensions (OPERS, OTRS, etc.): Taxable, but eligible for the $10,000 exemption. There is no separate, preferential treatment for Oklahoma government pensions at the state level beyond the general retirement income exemption.

Retirement Account Distributions

401(k) and Traditional IRA: Distributions are included in Oklahoma taxable income, but eligible for the $10,000 annual retirement income exemption.

Roth IRA: Qualified Roth IRA distributions that are federally tax-free are generally also not subject to Oklahoma income tax.

The $10,000 Annual Retirement Income Exemption

Oklahoma allows an exemption of up to $10,000 per year for qualifying retirement benefits. This exemption covers pension income, 401(k) distributions, IRA distributions, and similar retirement plan income. The $10,000 cap applies to the total of all qualifying retirement income combined.

Source: Schedule 511-B / 511-A instructions; 2025 Form 511 Packet — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf

Sales Tax Relief Credit for Seniors (Form 538-S)

Qualifying retirees age 65 or older with household gross income of $50,000 or less may be eligible for the Sales Tax Relief Credit. See the Credits section in Part 2 of this guide.

Students

College students attending school in Oklahoma do not automatically become Oklahoma residents for tax purposes.

You remain a nonresident if:

  • You maintain legal residence (domicile) in another state
  • Your presence in Oklahoma is temporary for educational purposes
  • You intend to return to your home state after graduation

You owe Oklahoma tax only on Oklahoma-source income:

  • Wages earned from working in Oklahoma
  • Other Oklahoma-source income (rental income from Oklahoma property, etc.)

Establishing Oklahoma residency as a student: Students can become Oklahoma residents if they take affirmative steps to establish domicile — such as registering to vote in Oklahoma, obtaining an Oklahoma driver’s license, and demonstrating intent to remain permanently (not just for school).

Source: 2025 Form 511-NR Packet, “Resident Defined” — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf

Part-Year Residents

If you moved TO or FROM Oklahoma during 2025, you file as a part-year resident using Form 511-NR.

How Part-Year Resident Tax Is Calculated

Oklahoma uses a proration method for part-year residents:

  1. Calculate total taxable income as if all income were earned in Oklahoma
  2. Determine the percentage of income from Oklahoma sources vs. total income
  3. Apply that percentage to the base Oklahoma tax to arrive at the Oklahoma tax owed

This method (rather than a simple allocation by date) means part-year residents with significant non-Oklahoma income may owe less Oklahoma tax than expected.

Formula: (Oklahoma AGI ÷ Federal AGI from all sources) × Oklahoma base tax = Oklahoma tax owed

Income Allocation

  • Report all income earned while a resident of Oklahoma from all sources
  • Report Oklahoma-source income earned while a nonresident
  • Exclude income earned while a resident of another state (for non-Oklahoma sources)

Moving TO Oklahoma

  • Your Oklahoma residency begins the day you establish domicile in Oklahoma
  • Report all income from that date forward (plus Oklahoma-source income before that date)
  • File a nonresident or part-year resident return in your former state for income earned before moving

Moving FROM Oklahoma

  • Your Oklahoma residency ends the day you establish domicile elsewhere
  • Report all income through that date (plus any Oklahoma-source income after that date)
  • File a nonresident or part-year resident return in your new state for income earned after moving

Form required: Form 511-NR — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf

Common Oklahoma Tax Filing Situations

Situation: “My employer is based in Texas (no income tax), so I don’t owe Oklahoma tax.”

Oklahoma law: Oklahoma residents owe tax on all income regardless of employer location or the employer’s state. Employer location does not determine tax obligation — Oklahoma domicile does.
Source: 2025 Form 511 Packet — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf


Situation: “I’m a nonresident working remotely for an Oklahoma company. Do I owe Oklahoma tax?”

Oklahoma law: If you are a nonresident who performs all work outside of Oklahoma (e.g., from your home state), your wages are generally not Oklahoma-source income. Oklahoma taxes nonresidents only on income from work performed in Oklahoma. If you travel to Oklahoma occasionally for work, only the wages for those days in Oklahoma are Oklahoma-source.
Source: 68 OS § 2358; Form 511-NR Packet — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf


Situation: “I moved to Oklahoma in July 2025. Do I owe Oklahoma tax on income I earned before moving?”

Oklahoma law: As a part-year resident, you owe Oklahoma tax on all income earned after establishing Oklahoma domicile (from your move-in date forward) PLUS any Oklahoma-source income earned before moving. You do not owe Oklahoma tax on out-of-state income earned before your move.
Source: Form 511-NR Packet — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf


Situation: “I live in Oklahoma but work in Kansas. Do I have to pay tax in both states?”

Oklahoma law: Yes, potentially. As an Oklahoma resident, you owe Oklahoma income tax on all income. Kansas may also tax income physically earned there. You can claim the Form 511-TX credit on your Oklahoma return for taxes paid to Kansas, which reduces (but may not fully eliminate) double taxation. Since Oklahoma has no reciprocal agreement with Kansas, both states may impose tax.
Source: Form 511-TX — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-TX.pdf

Audit Documentation — Oklahoma Residency

Oklahoma uses a domicile-based standard for residency. In a residency dispute, common documentation requested includes:

Primary Residency Evidence
Document Type What It Shows
Oklahoma Driver's License State of legal residence
Oklahoma Voter Registration Where you exercise voting rights
Oklahoma Vehicle Registration Where vehicle is domiciled
Homestead Exemption Primary residence designation
Physical Presence and Intent Documentation
Document Type What It Shows
Travel records / calendar Days spent in each state
Credit card statements Geographic spending patterns
Utility bills Physical occupancy
Employment contract / remote work agreement Work location details
W-2 forms Employer location and wages
Social and Family Connections
Document Type What It Shows
Spouse/family location Where family resides
Medical records Where regular care received
Church/club memberships Community ties in Oklahoma
Professional licenses State of professional domicile
Intent Documentation
Document Type What It Shows
Will / estate documents Stated domicile for estate purposes
Prior-year tax returns Prior year residency claims
Insurance policies Address on file

Burden of Proof: In residency disputes, the burden typically falls on the taxpayer to prove non-residency if Oklahoma claims residency.

Source: OAC § 710:50; Oklahoma Tax Commission — https://www.tax.ok.gov

Filing Options for Oklahoma Income Tax

Online Filing (E-File) — Recommended

Electronic filing is available 24/7 through the Oklahoma Tax Commission’s official portal and through approved software providers.

Oklahoma Official Online Portal — OkTAP:
Free, fast, 24/7 online filing through Oklahoma Taxpayer Access Point

  • URL: https://oktap.tax.ok.gov
  • E-file receives an automatic 5-day extension: April 20, 2026 due date (April 15 for paper)
  • Any balance due with an e-filed return must also be paid electronically by April 20th

IRS-Approved Tax Software:
TurboTax, H&R Block, TaxAct, and other major software providers that support Oklahoma returns. These link to the state system through approved electronic filing channels.

Free File Options:
Low-income taxpayers may qualify for free filing through IRS Free File partners that support Oklahoma returns.

Paper Filing

Paper forms are available for download from the Oklahoma Tax Commission website:

Resident return (Form 511):

Nonresident/Part-Year return (Form 511-NR):

Mailing address — with payment:
Oklahoma Tax Commission
Post Office Box 26890
Oklahoma City, OK 73126-0890

Mailing address — without payment / refund expected:
Oklahoma Tax Commission
Post Office Box 26800
Oklahoma City, OK 73126-0800

Source: https://oklahoma.gov/tax/individuals/pay-taxes.html

Tax Preparer Options

Licensed tax professionals familiar with Oklahoma tax law include:

  • CPA (Certified Public Accountant)
  • Enrolled Agent (EA)
  • Tax Attorney

Forms & Publications

Primary Tax Return Forms

Resident Income Tax Return:

Nonresident and Part-Year Resident Return:

Common Schedules for Form 511 (Resident)

Schedule 511-A — Oklahoma Capital Gain Deduction and Retirement Income Exclusion
Schedule 511-B — Other adjustments (additions and deductions to federal AGI)
Schedule 511-C — Military pay exclusion, tribal income, 529 contributions, other subtractions
Schedule 511-D — Oklahoma itemized deductions
Schedule 511-E — Special computations (income adjustment by exemption amount)
Schedule 511-F — Not used for residents
Schedule 511-G — Earned Income Credit (Oklahoma EIC)
Schedule 511-H — Charitable donations from refund
Schedule 511-I — Capital gains averaging

Common Schedules for Form 511-NR (Nonresident/Part-Year Resident)

Schedule 511-NR-1 — Income allocation (Federal vs. Oklahoma columns)
Schedule 511-NR-A — Oklahoma Capital Gain Deduction and Retirement Income
Schedule 511-NR-B — Additions and deductions to federal AGI
Schedule 511-NR-C — Oklahoma adjustments (military pay, 529, etc.)
Schedule 511-NR-D — Child care / child tax credit
Schedule 511-NR-E — Special computations
Schedule 511-NR-F — Oklahoma Earned Income Credit
Schedule 511-NR-G — Charitable donations from refund
Schedule 511-NR-H — Amended return information

Key Additional Forms

Form 504-I — Oklahoma Individual Extension Request — https://www.tax.ok.gov
Form 511-TX — Credit for Taxes Paid to Another State — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-TX.pdf
Form 511-EIC — Oklahoma Earned Income Credit Worksheet — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-EIC.pdf
Form 511-CR — Oklahoma Tax Credits (multiple credits) — https://www.tax.ok.gov
Form 538-S — Sales Tax Relief Credit — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/538-S.pdf
Form 538-H — Low Income Property Tax Credit — https://www.tax.ok.gov
Form 573 — Farm Income Averaging — https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/software-developers/Dev573-25.pdf
Form 574 — Resident Nonresident Allocation (split-residency couples) — https://www.tax.ok.gov
Form 578 — Credit for Electricity Generated by Zero-Emission Facilities — https://www.tax.ok.gov
Form OW-8-ES — Estimated Income Tax — Individual — https://www.tax.ok.gov
Form OW-8-P — Estimated Tax Underpayment — https://www.tax.ok.gov
Form 569 — Transfer or Allocation of Tax Credits — https://www.tax.ok.gov

Withholding Forms

Form OK-W-4 — Oklahoma Employee Withholding Allowance Certificate (state equivalent of federal W-4)
Form OW-9-MSE — Annual Withholding Tax Exemption Certification for Military Spouses
Packet OW-2 — Oklahoma Income Tax Withholding Tables for Employers (2025 edition)

Oklahoma Withholding Tables 2025: https://oklahoma.gov/content/dam/ok/en/tax/documents/resources/publications/businesses/withholding-tables/WHTables-2025.pdf

All Forms Library

The complete library of Oklahoma tax forms for all years is available at:
https://www.tax.ok.gov → Forms → Individual


Where to Check for Updates

Current Tax Forms and Instructions:
https://www.tax.ok.gov → Forms → Individual (Updated annually, typically published October–November for the upcoming tax year)

OkTAP Online Services:
https://oktap.tax.ok.gov (24/7 online filing, payment, refund status, account management)

Legislative Changes:

Administrative Guidance:

Tax Year 2026 Note:
House Bill 2764 (2025) takes effect for Tax Year 2026. Oklahoma will shift from six brackets to three brackets with a top rate of 4.5%. Monitor https://oklahoma.gov/content/dam/ok/en/tax/documents/resources/publications/legislation/2025LegislativeUpdate.pdf for implementation details and the 2026 Form 511 packet for the new bracket tables.

Note: This page will be reviewed and updated in January 2027 for Tax Year 2026. For real-time updates, consult the official Oklahoma Tax Commission website at https://www.tax.ok.gov.

Information Verification Log

Information Verification Log — Oklahoma Tax Data
Information Type Source Last Verified
Tax forms — Form 511, 511-NR https://www.tax.ok.gov February 19, 2026
Filing portals (OkTAP) https://oktap.tax.ok.gov February 19, 2026
Mailing addresses https://oklahoma.gov/tax/individuals/pay-taxes.html February 19, 2026
Contact information (OTC) https://www.tax.ok.gov February 19, 2026
TY 2026 bracket reform details 2025 Legislative Update (PDF) February 19, 2026
Oklahoma Statutes Title 68 https://www.oscn.net/applications/oscn/index.asp?level=1&title=68 February 19, 2026
Oklahoma Administrative Code Title 710 https://www.oscn.net/applications/oscn/index.asp?level=2&title=710 February 19, 2026

Official Oklahoma Income Tax Resources

All information in this guide has been compiled exclusively from official government sources.

Oklahoma Tax Commission

Key Official Oklahoma Government Documents (Tax Year 2025)

Form 511 Packet (Resident, 2025)https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf
Form 511-NR Packet (Nonresident/Part-Year Resident, 2025)https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-NR-Pkt.pdf
Form 511-TX (Credit Other State)https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-TX.pdf
Form 511-EIC (Earned Income Credit)https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-EIC.pdf
Form 538-S (Sales Tax Relief Credit)https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/538-S.pdf
2025 Withholding Tables (OW-2)https://oklahoma.gov/content/dam/ok/en/tax/documents/resources/publications/businesses/withholding-tables/WHTables-2025.pdf
2026 Withholding Tables (OW-2)https://oklahoma.gov/content/dam/ok/en/tax/documents/resources/publications/businesses/withholding-tables/WHTables-2026.pdf
2025 Legislative Tax Summary (HB 2764)https://oklahoma.gov/content/dam/ok/en/tax/documents/resources/publications/legislation/2025LegislativeUpdate.pdf
Tax Rates confirmation (Form 573, 2025)https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/software-developers/Dev573-25.pdf
OTC Annual Revenue Report FY2025https://oklahoma.gov/content/dam/ok/en/tax/documents/resources/reports/annual-reports/otc/AR-2025.pdf

Oklahoma Tax Code and Regulations

Contact Information

Oklahoma Tax Commission — Main Phone: 405-521-3160
Refund Status Inquiries: 405-521-3160
Hours: Monday – Friday, 7:30 a.m. – 4:30 p.m. Central Time
Mailing Address:
Oklahoma Tax Commission
2501 North Lincoln Boulevard
Oklahoma City, OK 73194
Online inquiries: https://oktap.tax.ok.gov (secure messaging through your OkTAP account)
General OTC website: https://www.tax.ok.gov

Free Tax Assistance

VITA (Volunteer Income Tax Assistance):
IRS-sponsored free tax preparation for qualifying individuals (generally $67,000 income limit or less)
Find locations: https://www.irs.gov/vita

TCE (Tax Counseling for the Elderly):
Free tax help for individuals age 60 and older
Find locations: https://www.irs.gov/tce

AARP Tax-Aide:
Free tax preparation for low-to-moderate-income taxpayers, with special focus on those 50+
Find locations: https://www.aarp.org/money/taxes/aarp_taxaide/

Tax Glossary

Oklahoma Taxable Income:
Federal Adjusted Gross Income, adjusted for Oklahoma additions and subtractions (Schedule 511-B/511-C), minus the Oklahoma standard deduction or Oklahoma itemized deductions (Schedule 511-D), minus personal exemptions ($1,000 each).

Oklahoma Source Income:
Income earned by a nonresident that is subject to Oklahoma tax — wages for work performed in Oklahoma, Oklahoma business income, Oklahoma rental/royalty income, Oklahoma capital gains, and Oklahoma gambling winnings (68 OS § 2358).

Domicile:
Your permanent legal home — the place established as your true, fixed, and permanent home, and to which you intend to return. Unlike some states, Oklahoma uses domicile (not day count) as the primary test for residency.

Form 511:
Oklahoma Resident Individual Income Tax Return — used by full-year Oklahoma residents.

Form 511-NR:
Oklahoma Nonresident and Part-Year Resident Income Tax Return — used by nonresidents with Oklahoma-source income and by part-year residents.

Form 511-TX:
Credit for Taxes Paid to Another State — used by Oklahoma residents to claim a credit against Oklahoma tax for income taxes paid to another state on income also taxable in Oklahoma.

OkTAP:
Oklahoma Taxpayer Access Point — the official free, online filing and account management system of the Oklahoma Tax Commission (https://oktap.tax.ok.gov).

Oklahoma Tax Commission (OTC):
The state agency responsible for administering and enforcing Oklahoma tax laws, collecting most state taxes, and providing taxpayer services.

OAC:
Oklahoma Administrative Code — the codification of Oklahoma administrative regulations. Title 710 covers the Oklahoma Tax Commission rules (https://www.oscn.net).

Oklahoma Statutes (OS):
Title 68 of the Oklahoma Statutes governs taxation, including the Oklahoma Income Tax Act (https://www.oscn.net).

Update History

February 2026 — Initial Publication

  • Published comprehensive Oklahoma income tax guide for Tax Year 2025 (returns filed 2026)
  • Tax rates and brackets verified from official OTC Form 573 (2024–2025 rate tables)
  • Standard deductions verified from Form 511 (2025 edition)
  • All sections verified from official Oklahoma Tax Commission sources
  • Noted HB 2764 (2025) — Tax Year 2026 rate reduction and bracket restructuring
  • Source: https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/software-developers/Dev573-25.pdf and Form 511 Packet

Verification Schedule:

  • Annual Update: January (new tax rates — especially critical for TY 2026 due to HB 2764 restructuring)
  • Mid-Year Review: June (legislative changes)
  • Continuous Monitoring: Emergency tax legislation, OTC guidance bulletins
  • Source Link Check: Quarterly (all oklahoma.gov URLs verified functional)

Last comprehensive update: February 19, 2026
Next scheduled review: January 2027 (Tax Year 2026 — new 3-bracket system with 4.5% top rate takes effect)

Others

Legal Disclaimer: Nature of This Compilation This document is a compilation of publicly available information from official government sources. It is NOT: Legal advice An interpretation of laws or regulations A substitute for consultation with a licensed attorney A comprehensive treatment of all applicable laws Guaranteed to be complete or current