Categories



Tax Calendar: October and November 2018

Lavelle & Finn


OCTOBER 2018

 

October 15

Individuals. If you have an automatic six-month extension to file your income tax return for 2017, file Form 1040, 1040A, or 1040EZ and pay any tax, interest, and penalties due.

Employers. For Social Security, Medicare, withheld income tax, and nonpayroll withholding, deposit the tax for payments in September if the monthly rule applies.

Corporations. File a 2017 calendar-year income tax return (Form 1120) and pay any tax, interest, and penalties due. This due date applies only if you timely requested an automatic 6-month extension.

 

October 31

Employers. For Social Security, Medicare, and withheld income tax, file Form 941 for the third quarter of 2018. Deposit any undeposited tax under the accuracy of deposit rules. (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 13 to file the return.

For federal unemployment tax, deposit the tax owed through September if more than $500.

 

NOVEMBER 2018

Employers. Ask employees whose withholding allowances will be different in 2019 to fill out a new Form W-4 or Form W-4(SP). The 2019 revision of Form W-4 will be available by mid-December at www.IRS.gov/FormW4.

 

November 13

Employers. For Social Security, Medicare, and withheld income tax, file Form 941 for the third quarter of 2018. This due date applies only if you deposited the tax for the quarter in full and on time.

 

November 15

Employers. For Social Security, Medicare, withheld income tax, and nonpayroll withholding, deposit the tax for payments in October if the monthly rule applies.