Tax Due Dates
October
- October 15 Individuals – File 2023 Income tax return (Form 1040) if 6-month extension was filed.
- October 15 C-corporations – Calendar year. File 2023 Income Tax Return (Form 1120) if 6-month extension was filed.
November
- November 15 Exempt Organizations – Calendar year. File 2023 information return (Form 990, Form 990-EZ or Form 990-PF) if 6-month extension was filed.
December
- December 16 C-corporations – Pay the 2024 fourth estimated tax payment installment and complete Form 1120-W for records.