Remember to file your 2016 Oregon calendar year C corporation returns by Monday, May 15, 2017. All other Oregon C corporation returns are due by the 15th day of the month following the federal due date.
You can file for an automatic six-month extension on federal Form 7004. Please note, this extension form is filed with the IRS, not the Department of Revenue. Attach Form 7004 to your Oregon return when it's filed. Remember that an extension to file isn't an extension to pay. You must pay any Oregonvtax due by the regular due date of your return, regardless of extension.