What is the due date of the Oregon return when I have a federal extension?
Oregon accepts the federal extension to extend the due date for filing your federal and state return. If you have a 6-month extension of time to file, your federal return is due 6 months after the original federal due date, and your Oregon return is due 6 months after the original Oregon due date. Example: Your federal return is due March 15 with a 6-month extension to September 15. Your Oregon return is due April 15 with a 6-month extension to October 15. The due dates for a fiscal year ending taxpayer apply to the 15th day of the fourth month following the end of your fiscal year. Be sure to attach a copy of the federal extension to the back of your Oregon return and mark the “Extension” box on the first page of the Oregon return.
