Business Tax Extension Deadline 2024 S Corp Return. The 2024 deadline to file individual income tax returns for 2023 is. The due dates for these 2024 payments are april 15, june 17, september 16, and january 15 (2025).

If you filed an extension for your s corporation or partnership, your tax return must be filed by september 16, 2024. The deadline to apply for an extension is the same as the filing deadline.