If you need more time to file your Ohio tax return, file a federal extension. When you later file your Ohio return, answer Yes to the question.This gives you until October 15 to file without penalties. Ohio offers a 6-month extension for individuals that have an approved Federal extension, which moves the filing deadline from April 15 to October 15. An extension request must be submitted on or before the date the municipal income tax return is due. Download and complete a Form 32 EST-EXT. You'll receive an electronic acknowledgment once you. Extensions - An automatic 6-month extension is granted if a federal extension is filed. Ohio does not have a separate extension request form. Filing an extension on time will ONLY eliminate the late filing penalties but not the late tax payment penalties.