2024 Oklahoma State Tax Deadlines
If you are a resident or have been involved in significant business operations within Oklahoma, then you might be required to file Oklahoma State Taxes. We look at the most important tax deadlines and tax extensions for Oklahoma in 2024.
Oklahoma Business Tax Deadlines for 2024
C Corporation
Oklahoma C Corporation Tax Deadlines for 2024
You must file & pay Corporate Income Taxes in Oklahoma by May15, 2025.
- File Online with the Oklahoma Tax Commission.
- File by Mail must be postmarked by the due date.
Form OK 512 – Oklahoma Corporation Income Tax Return.
Extension to File Taxes in Oklahoma for 2024
You must send payment for taxes in Oklahoma for the fiscal year 2024 by May15, 2025.
The Extension Deadline is December 15, 2025, to file your Oklahoma corporate income tax return.
Oklahoma automatically grants 7 months extensions on filing corporate income tax returns, if a federal extension is filed.. This means you do not need to file for an extension in Oklahoma. If your federal return is not extended, or an Oklahoma liability is owed, an extension of time to file your Oklahoma return may be granted on Form 504-C. The Form 504-C must be filed on or before the due date of the return.
This is an extension to FILE, not an extension to PAY – payment is still due May 15, 2025.
Pass-Throughs
Oklahoma S Corporation & Partnership Tax Deadlines for 2024
You must file in Oklahoma by March 15, 2025.
- File Online with the Oklahoma Tax Commission.
- File by Mail must be postmarked by the due date.
Applicable forms:
Form 512-S – S-Corporation Income Tax Return
Form 514 – Partnership Income Tax Return
Extension to File S Corporation & Partnership Taxes in Oklahoma for 2024
You must send a payment for taxes in Oklahoma for the fiscal year 2024 by April15, 2025.
The Extension Deadline is October15, 2025, to file your Oklahoma S Corporation or Partnership income tax return.
Oklahoma automatically grants 6 months extensions on filing pass-through entity income tax returns, if the federal extension is filed This means you do not need to file for an extension in Oklahoma. If your federal return is not extended, or an Oklahoma liability is owed, an extension of time to file your Oklahoma return may be granted on Form 504-C.
This is an extension to FILE, not an extension to PAY – payment is still due April 15, 2025.
Oklahoma Individual Tax Deadlines for 2024
Estimated Tax Deadline for Oklahoma 2024
Estimated tax payments are made:
- April 15, 2024,
- June 15, 2024,
- September 15, 2024,
- January 15, 2025.
See Form OW-8-ES instructions for the amount to pay with each voucher.
Individual Tax Deadline for Oklahoma 2024
You must file & pay Individual Income Taxes in Oklahoma by April 15, 2025.
- File Online with the Oklahoma Tax Commission
- File by Mail must be postmarked by the due date
Applicable forms:
- Form 511 – Residents
- Form 511NR – Nonresidents & Part-Year Residents
Extension to File Taxes in Oklahoma for 2024
You must send payment for taxes in Oklahoma for the fiscal year 2024 by April 15, 2025.
The Extension Deadline is October 15, 2025, to file your Oklahoma Individual Income tax return.
Oklahoma will automatically grant a 6 months extension on filing personal income taxes if a federal extension is filed. This means you do not need to file for an extension in Oklahoma if you file a federal extension. If you do NOT file a federal extension, file Form 504-I.
This is an extension to FILE, not an extension to PAY – payment is still due April 15, 2025.
Estates Tax Deadline for Oklahoma 2024
Oklahoma does not have an Estate Tax.
Farmer and Fisherman Taxes for Oklahoma 2024
If at least 2/3 of your gross income for the taxable year is derived from farming, you may pay estimated tax at any time on or before January 15, 2025. If you wait until January 15, 2025, you must pay the entire balance of the estimated tax. However, if farmers file their tax return on or before March 1, 2025, and pay the total tax at that time, they need not file estimated tax.
Sources
- Oklahoma State Government Individual and Corporate Filing Information
- Oklahoma State Government Tax Forms
- Oklahoma Tax Commission
The material discussed on this page is meant for general illustration and/or informational purposes only and is not to be construed as investment, tax, or legal advice. You must exercise your own independent professional judgment, recognizing that advice should not be based on unreasonable factual or legal assumptions or unreasonably rely upon representations of the client or others. Further, any advice you provide in connection with tax return preparation must comply in full with the requirements of IRS Circular 230.
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