Corporate Tax Filing Deadline 2024 Extension. 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. You have 10 calendar days after the initial date when you transmit a corporate electronic return to receive approval on a rejected return.

This extension grants an additional six months to file the federal tax return, moving the deadline to either september 16, 2024 or october 15, 2024, for the 2023. 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.