| October 2024 |
| October 10 |
Individuals - Report September tip income of $20 or more to employers (Form 4070). |
| October 15 |
Individuals - File a 2023 income tax return (Form 1040 or Form 1040-SR) if an automatic six-month extension was filed (or if an automatic four-month extension was filed by a taxpayer living outside the United States and Puerto Rico). Pay any tax, interest and penalties due. |
| October 15 |
Individuals - Make contributions for 2023 to certain existing retirement plans or establish and contribute to a SEP for 2023 if an automatic six-month extension was filed. |
| October 15 |
Individuals - File a 2023 gift tax return (Form 709) and pay any tax, interest and penalties due if an automatic six-month extension was filed. |
| October 15 |
Calendar-year bankruptcy estates - File a 2023 income tax return (Form 1041) if an automatic six-month extension was filed. Pay any tax, interest and penalties due. |
| October 15 |
Calendar-year C corporations - File a 2023 income tax return (Form 1120) if an automatic six-month extension was filed. Pay any tax, interest and penalties due. |
| October 15 |
Calendar-year C corporations - Make contributions for 2023 to certain employer-sponsored retirement plans if an automatic six-month extension was filed. |
| October 15 |
Employers - Deposit Social Security, Medicare and withheld income taxes for September if the monthly deposit rule applies. |
| October 15 |
Employers - Deposit nonpayroll withheld income tax for September if the monthly deposit rule applies. |
| October 31 |
Employers - Report Social Security and Medicare taxes and income tax withholding for third quarter 2024 (Form 941) and pay any tax due if all of the associated taxes due weren't deposited on time and in full. |
| November 2024 |
| November 12 |
Individuals - Report October tip income of $20 or more to employers (Form 4070). |
| November 12 |
Employers - Report Social Security and Medicare taxes and income tax withholding for third quarter 2024 (Form 941) if all of the associated taxes due were deposited on time and in full. |
| November 15 |
Employers - Deposit Social Security, Medicare and withheld income taxes for October if the monthly deposit rule applies. |
| November 15 |
Employers - Deposit nonpayroll withheld income tax for October if the monthly deposit rule applies. |
| November 15 |
Calendar-year exempt organizations - File a 2023 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. |
| December 2024 |
| December 10 |
Individuals - Report November tip income of $20 or more to employers (Form 4070). |
| December 16 |
Calendar-year corporations - Pay the fourth installment of 2024 estimated income taxes, completing Form 1120-W for the corporation's records. |
| December 16 |
Employers - Deposit Social Security, Medicare and withheld income taxes for November if the monthly deposit rule applies. |
| December 16 |
Employers - Deposit nonpayroll withheld income tax for November if the monthly deposit rule applies. |
