April 15

Individuals: File a 2023 income tax return (Form 1040 or Form 1040-SR) or file for an automatic six-month extension (Form 4868). (Taxpayers who live outside the United States and Puerto Rico or serve in the military outside these two locations are allowed an automatic two-month extension without requesting an extension.) Pay any tax due.

Individuals: Pay the first installment of 2024 estimated taxes (Form 1040-ES) if not paying income tax through withholding or not paying sufficient income tax through withholding.

Individuals: You can make 2023 contributions to a traditional IRA or Roth IRA (even if a 2023 income tax return extension is filed).

Individuals: You can make 2023 contributions to an SEP or certain other retirement plans (unless a 2023 income tax return extension is filed).

Individuals: File a 2023 gift tax return (Form 709) or file for an automatic six-month extension (Form 8892). Pay any gift tax due. If no gift tax is due, file for an automatic six-month extension (Form 4868) to extend both Form 1040 and Form 709.

Household employers: File Schedule H if wages paid equal $2,600 or more in 2023 and Form 1040 isn’t required to be filed. For those filing Form 1040, Schedule H is to be submitted with the return, which is extended if the return is extended.

Calendar-year trusts and estates: File a 2023 income tax return (Form 1041) or file for an automatic five-and-a-half-month extension (Form 7004) (six-month extension for bankruptcy estates). Pay any income tax due.

Calendar-year corporations: File a 2023 income tax return (Form 1120) or file for an automatic six-month extension (Form 7004). Pay any tax due.

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

Employers: Deposit Social Security and Medicare and withhold income taxes for March if the monthly deposit rule applies.

Employers: Deposit nonpayroll withheld income tax for March if the monthly deposit rule applies.

April 30

Employers: Report Social Security and Medicare taxes and income tax withholding for the first quarter of 2024 (Form 941) and pay any tax due if all of the associated taxes weren’t deposited on time and in full.

May 10

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