October 31, 2025
Employers – Social Security, Medicare, and withheld income tax. File form 941 for the third quarter of the current year. Deposit any undeposited tax. (If your tax liability is less than $2,500, you can pay it in full with a timely filed return.) If you deposited the tax for the quarter in full and on time, you have until November 10 to file the return.
