Irs Corporate Tax Extension Deadline 2024. If you filed an extension for your 2023 taxes, the deadline to file your extended return is october 15, 2024. The final federal filing deadline for 2023 individual income tax returns is tuesday, october 15, 2024.
Make sure you pay any tax. If you are a c corporation that applied for an extension from the original april 15, 2024 deadline, your income tax return is now due.