In October 2025, the key tax due date is October 15. This is the deadline to file your 2024 income tax return if you filed an automatic six-month extension. It is also the day to pay any taxes, interest, or penalties due. Additionally, October 15 is the deadline for IRA recharacterizations for those who filed on time and for filing 2024 gift tax returns if extended. Employers need to deposit Social Security, Medicare, and withheld income taxes for September by October 15 if the monthly deposit rule applies. Other important October dates include October 10, when individuals must report September tip income of $20 or more to employers, and October 31, when employers must file Form 941 for third quarter 2025 and pay any due taxes if not previously deposited timely.
For taxpayers in the UK using Self Assessment, the paper tax return deadline is October 31, 2025.
Thus, October 15 is the main tax due date in the United States for extended returns and related payments.
