The State of Oklahoma will automatically grant you a 6-month tax extension if you were approved for a federal tax extension. However, you will need to submit Oklahoma Form 504 (PDF) if you need to make a state tax payment, if you were not approved for a federal extension, or if you are requesting an extension beyond that granted by the IRS.

If you do not need to make a tax payment and have received an approval notification from FileLater, there’s nothing more to do. Make sure to include a copy of your federal extension (IRS Tax Form 7004 ) when you file your Oklahoma state tax return.

Filing for a Oklahoma tax extension will not provide you with additional time to pay any tax balance due, which must be paid by your original filing deadline, or interest and other payment penalties may apply.

For additional information, please visit the State of Oklahoma Tax Commission website.

Print and Mail:
Oklahoma State Tax Extension Form 504 (PDF)

Mail to:
Oklahoma Tax Commission
Income Tax
P.O. Box 26800
Oklahoma City, Oklahoma  73126-0800