Corporate Tax Extension Deadline 2024 Form. There are 3 ways to get until october 15 to file your tax return. 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.

October 15, 2024 is the extended filing deadline for individual tax returns, sole proprietorships, and c corporations. The corporation must show its 2024 tax year on the 2023 form 1120 and take into account any tax law changes that are effective for tax years beginning after december 31, 2023.