May 10, 2024

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

Employers – Report Social Security and Medicare taxes and income tax withholding for first quarter 2024 (Form 941) if all associated taxes due were deposited on time and in full.

May 15, 2024

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

Employers – Deposit nonpayroll withheld income tax for April if the monthly deposit rule applies.

Calendar-year exempt organizations – File a 2023 information return (Form 990, Form 990-EZ or Form 990-PF) or file for an automatic six-month extension (Form 8868). Pay any tax due.

Calendar-year small exempt organizations (with gross receipts normally of $50,000 or less – File a 2023 e-Postcard (Form 990-N) if not filing Form 990 or Form 990-EZ.