S Corp Filing Deadline 2024 Extension Date. The deadline for filing form 1120s is march 15, 2024. What is the s corp extension due date for 2024?

For individuals, that means you can still file for a tax extension right on april 15, 2024. If an s corporation has successfully filed for an extension, the new due date would be the 15th day of the ninth month following the end of the corporation’s tax year.