| November 10th | Individuals - Report October tip income of $20 or more to employers (Form 4070). |
| November 10th | Employers - Report Social Security and Medicare taxes and income tax withholding for third quarter 2025 (Form 941) if all of the associated taxes due were deposited on time and in full. |
| November 17th | Calendar-year exempt organizations - File a 2024 information return (Form 990, Form 990-EZ or Form 990-PF) if a six-month extension was filed. Pay any tax, interest and penalties due. |
| November 17th | Employers - Deposit nonpayroll withheld income tax for October if the monthly deposit rule applies. |
| November 17th | Employers - Deposit Social Security, Medicare and withheld income taxes for October if the monthly deposit rule applies. |
