Oklahoma Flag Picture

Oklahoma Tax Resources

Governor: Brad Henry
Income Tax Revenue (2007): $8,267,606,000.00
Oklahoma Population 3,608,123

Free State e-Filing Picture

Free E-Filing for Oklahoma with TurboTax

TurboTax provides free electronic state tax filing for qualified residents of the state of Oklahoma. Oklahoma is a sponsor of the Free File program therefore Oklahoma's lower income taxpayers can e-file their state taxes with TurboTax at no cost. You qualify for free state tax filing if any or all of the following apply:

  • You earned $30,000 or less on your adjusted gross income.
  • Or you were active duty military in 2008 with an an adjusted gross income of $56,000 or less.
  • Or if you qualify for the earned income credit.

See taxfreedom.com for more details. E-File your Taxes with TurboTax Now. Its Quick, Easy, Secure and Free.

Oklahoma Mailing Address

Wondering where to mail your Oklahoma taxes? Here's the address:

Oklahoma Tax Commission
Income Tax
P.O. Box 26800
Oklahoma City, OK 73126-0800



Oklahoma Tax Filing Guide

Here are detailed instructions for filing taxes in the state of Oklahoma.

Oklahoma Residents

If you domicile (permanent) home was in Oklahoma all year you are a resident of Oklahoma. If you are an Oklahoma resident that had to file a Federal return or if you made over $12,500 (filing as married, filing separately), $15000 (filing as single), $19000 (filing as head of household), or $25000 (filing as married, filing jointly) you will need to file a Oklahoma income tax return. If you are either blind or over 65 at the end of the tax year you may qualify for a $1000 exemption. If you are not required to file a return because of the above requirements but had income withheld you will also need to file a return to receive a refund on such income. To file a Oklahoma resident return use Form-511 and see Form-511 Instructions for additional information or assistance.

Related Tax Forms

  • Form-511 - Oklahoma Resident Income Tax Return

Oklahoma Residents who lived in Oklahoma for part of the year

If your domicile (permanent) home was in Oklahoma for only part of the year, which could be the case you either moved in or out of Oklahoma in the past year, you are a part year resident of Oklahoma. If you are a part year resident you have the same filing requirements as a resident during the time you were a resident of Oklahoma and the same filing requirements as a nonresident during the time of non-residency. File Form-511NR (attached below) if you need to file a part-year return and see the Form-511NR Packet (attached below) for additional information and assistance.

Related Tax Forms

  • Form-511NR - Oklahoma Nonresident/ Part-Year Income Tax Return

Oklahoma Residents who work in another state

If you domicile (permanent) home was in Oklahoma all year you are a resident of Oklahoma. If you are an Oklahoma resident that had to file a Federal return or if you made over $12,500 (filing as married, filing separately), $15000 (filing as single), $19000 (filing as head of household), or $25000 (filing as married, filing jointly) you will need to file a Oklahoma income tax return. If you are either blind or over 65 at the end of the tax year you may qualify for a $1000 exemption. If you are not required to file a return because of the above requirements but had income withheld you will also need to file a return to receive a refund on such income. To file a Oklahoma resident return use Form-511 and see Form-511 Instructions for additional information or assistance.

If you were an Oklahoma resident that worked in another state you will be taxed by Oklahoma on that income. This is because Oklahoma taxes all income earned by its residents regardless of where the income was earned. The problem is that the state in which you earned the income may also tax the income that was earned in it. This means you will face dual taxation on this income. To solve this problem Oklahoma has a credit for taxes paid to another state. To obtain this credit file Form-511TX and attach it to the return for the other state, your W-2 (obtained from your employer), and your Oklahoma return (filed using Form-511, attached below). Make sure to report all income you earned from all sources on Form-511. See Form-511 Instructions for additional information or assistance.

Related Tax Forms

  • Form-511TX - Credit for Tax Paid to Another State
  • Form-511 - Oklahoma Resident Income Tax Return

Nonresidents who work in Oklahoma

If your domicile (permanent) home was outside of Oklahoma all year you are a nonresident of Oklahoma. Nonresidents who made more than $1000 of income from Oklahoma sources must file a Oklahoma nonresident return. If you are not required to file a nonresident return with Oklahoma but had income withheld you will need to file a return to receive a refund. Taxable income from Oklahoma sources include income from income from distributions from Limited Liability Companies (LLCs) , subchapter S corporations, and partnerships doing business in Oklahoma (this income may be in shares, income, gains, losses or deductions), income from rents royalties, and gains from the sale of property located in Oklahoma, and income from gambling winnings. To file a nonresident return use Form-511NR (attached below) and for additional assistance or information see Form-511NR Packet (attached below).

Related Tax Forms

  • Form-511NR - Oklahoma Nonresident/ Part-Year Income Tax Return

Nonresidents who sold property in Oklahoma

If your domicile (permanent) home was outside of Oklahoma all year you are a nonresident of Oklahoma. Nonresidents who made more than $1000 of income from Oklahoma sources must file a Oklahoma nonresident return. If you are not required to file a nonresident return with Oklahoma but had income withheld you will need to file a return to receive a refund. Taxable income from Oklahoma sources include income from compensation (salaries, wages, commission, ect.) for work performed in Oklahoma, income from distributions from Limited Liability Companies (LLCs) , subchapter S corporations, and partnerships doing business in Oklahoma (this income may be in shares, income, gains, losses or deductions), income from rents royalties, and gains from the sale of property located in Oklahoma, and income from gambling winnings. To file a nonresident return use Form-511NR (attached below) and for additional assistance or information see Form-511NR Packet (attached below).

Related Tax Forms

  • Form-511NR - Oklahoma Nonresident/ Part-Year Income Tax Return

Oklahoma Tax Forms

  • Form 511 - Oklahoma Resident Income Tax Return
  • Form-511 - Oklahoma Resident Income Tax Return
  • Form-511TX - Credit for Tax Paid to Another State
  • Form-511NR - Oklahoma Nonresident/ Part-Year Income Tax Return

Relevant Links