Social Security, Medicare, and withheld income tax

January 18, 2017

File Form 941 for the third quarter of 2017. Deposit or pay any undeposited tax under the accuracy of deposit rules. If your tax liability is less than $2,500, you can pay in full with a timely filed return.  If you deposited the tax for the quarter timely, properly, and in full, you have until November 13 to file the return.