Oklahoma | Personal Tax Extension | Form 504-I | Application for Extension of Time to File an Oklahoma Income Tax Return for Individuals

Modified on Tue, 14 Jan at 1:32 PM

State Abbreviation	OK
State Name	Oklahoma
Extension Status	Approved with Federal Extension
Return Due Date	April 15, 2025
Extended Due Date	October 15, 2025
Other Information	The return due date is April 20, 2025, if you eFile your return. Oklahoma grants an automatic 6-month extension provided you have been approved for a federal extension by the IRS AND no Oklahoma tax is due. Be sure to attach a copy of the federal extension to the Oklahoma return when filed.
Online Payment	Oklahoma \| Online Tax Extension Payment
Payment Voucher Title	Form 504-I \| Application for Extension of Time to File an Oklahoma Income Tax Return for Individuals
State Payment Agency	Oklahoma Tax Commission
Mailing Address with Payment	Oklahoma Tax Commission P.O. Box 26890 Oklahoma City, OK 73126-0890
Online Payment Options \| Credit Card	Taxpayers can pay electronically at https://oktap.tax.ok.gov/oktap/Web/_/ with a credit card, EFT, or e-check.
Online Payment Options \| ACH Debit	Taxpayers can pay electronically at https://oktap.tax.ok.gov/oktap/Web/_/ with a credit card, EFT, or e-check.
Failure to File Penalties	25% of unpaid tax.
Failure to Pay Penalties	5% of unpaid tax.