A valid extension to file a federal return automatically extends the due date of the Oklahoma return if no Oklahoma liability is owed. If the taxpayer is filing their Oklahoma return in paper form, they should include a copy of the federal extension.
If the federal return is not extended or Oklahoma tax is owed, file Form 504-I, Application for Extension of Time to File an Oklahoma Income Tax Return for Individuals, to request an extension to October 15.
An extension is valid and a late payment penalty may be avoided if 90% of the tax liability is paid by the original due date, otherwise interest will be charged from the original due date of the return.
To complete Form 504-01 in TaxSlayer Pro, from the Oklahoma Tax Return Menu select:
- Oklahoma Extension of Time to File
- Enter Extension
Note: Electronic filing is not supported for the state extension. The federal extension payment may be sent electronically, however the state extension will have to be mailed.
Additional Information:
Oklahoma State Tax Information
Where Do I Set Up Estimated Payments for Oklahoma?
While TaxSlayer Pro strives to make the information and links contained on this page as timely and accurate as possible, TaxSlayer Pro makes no promise or guarantee about the timeliness, accuracy or completeness of the contents of this page. The information contained on this page is for general information and is not intended to be tax advice. The user is also encouraged to review the underlying state resources and publications.