Calendar-year corporations - Pay the fourth installment of 2024 estimated income taxes, completing Form 1120-W for the corporation’s records.

Employers - Deposit Social Security, Medicare and withheld income taxes for November if the monthly deposit rule applies.

Employers - Deposit nonpayroll withheld income tax for November if the monthly deposit rule applies.

Employers - Deposit Social Security, Medicare and withheld income taxes for October if the monthly deposit rule applies.

Employers - Deposit nonpayroll withheld income tax for October if the monthly deposit rule applies.

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.

Individuals - Report October tip income of $20 or more to employers (Form 4070).

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.