Arkansas Filing Due Date: Corporation income tax returns are now due on April 15 — or by the 15th day of the 4rd month after the end of the taxable year (for fiscal year filers).
Extended Deadline with Arkansas Tax Extension: Arkansas grants an automatic 6-month tax extension with a valid filing of a federal business tax extension, which moves the filing deadline to October 15 (for calendar year taxpayers).
Arkansas Only Tax Extension: If you have not filed a federal business tax extension and need to request an Arkansas State Business Tax Extension, file Arkansas Form AR1155 (Request for Arkansas Extension of Time for Filing Income Tax Returns) by the original deadline of your return. If you show "good cause", Arkansas will also grant corporations an additional 60 day extension beyond October 15th. Use Form AR1155 and check Box 2A to request an additional 60 day extension.
Arkansas Extension Payment Requirement: An extension of time to file is NOT an extension of time to pay. Your Arkansas tax liability must be paid by the original due date (March 15 for most corporations) to avoid penalties and interest. If you owe Arkansas tax, you can make an extension payment using the last voucher on Form AR1100ESCT (Extension Corporation Income Tax Payment).