Upcoming Tax Due Dates

March 16

Employers:

Deposit nonpayroll withheld income tax for February if the monthly deposit rule applies.

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

Calendar-year partnerships:

File a 2025 income tax return (Form 1065 or Form 1065-B) and provide each partner with a copy of Schedule K1 (Form 1065) or a substitute Schedule K1 — or request an automatic six-month extension (Form 7004).

Calendar-year S corporations:

File a 2025 income tax return (Form 1120-S) and provide each shareholder with a copy of Schedule K-1 (Form 1120S) or a substitute Schedule K-1 — or file for an automatic six-month extension (Form 7004). Pay any tax due.

March 31

Employers:

Electronically file 2025 Form 1097, Form 1098, Form 1099 (other than those with an earlier deadline) and Form W-2G.

April 10

Individuals:

Report March tip income of $20 or more to employers (Form 4070).