Oklahoma individual income tax returns are due April 15.

If less than 100 percent of your North Dakota tax liability is paid by April 15, interest and penalties may be charged on the balance due until it is paid in full. Make check payable to North Carolina Department of Revenue. Illinois individual income tax returns are due on April 15. Make checks payable to Missouri Director of Revenue. If you owe taxes, include your payment with your Form 4868. Make checks payable to Alabama Department of Revenue. The Form RPD-41096 may be used to make application for an additional extension of time.

If you think you may need more time to prepare your return, you should file for an extension using Form 4868, Application for Automatic Extension of Time to File. Complete and file your return on or before October 16. If no federal extension form is filed or you need to make a payment with your extension, you are required to file Oklahoma Form 504, Application for Extension of Time to File. Adobe Reader installed on your computer to view and print these files. Franchise Tax Returns and tax Payments cannot be filed online at this time. Make checks payable to Arizona Department of Revenue. Requests for additional time beyond six months must be submitted in writing prior to expiration of the six-month extension. So, if you file for a federal extension, simply attach a copy of federal Form 4868 to your Indiana return when filing.