Tax Extension Deadline 2024 For Businesses. You can extend the due date for filing your personal income tax return by six months (e.g., to october 15, 2024, for 2023 tax year returns) by filing form 4868 or making an electronic tax payment before the april 15 (or april 17) deadline. October business tax deadlines for 2024 tuesday, october 15, 2024.

September 15, 2024 deadline to make retirement plan employer contributions for partnerships and s corporations. Since businesses have an earlier tax filing due date (march 15), the irs also gives them an earlier extension due date.