Corporate Tax Filing Deadline 2024. The 2024 corporation tax deadline is fast approaching in canada. If you’re a c corporation or llc electing to file your taxes as one for 2023, your corporate tax return is due on april 15th, 2024—unless you use your own fiscal calendar, in which case it’s due on the 15th of the 4th month following the end of your tax year.

File your return within six months of the end of each tax year. For most taxpayers, the deadline to file their personal federal tax return, pay any tax owed or request an extension to file is monday, april 15, 2024.