JANUARY 15

Individual taxpayers’ final 2018 estimated tax payment is due.

JANUARY 31

For 2018 Forms W-2 (“Wage and Tax Statement”) with the Social Security Administration and provide copies to your employees.

  • File 2018 Forms 1099-MISC (“Miscellaneous Income”) reporting nonemployee compensation payments in box 7 with the IRS and provide copies to recipients.
  • Most employers must file Form 941 (“Employer’s Quarterly Federal Tax Return”) to report Medicare, Social Security, and income taxes withheld in the fourth quarter of 2018. If your tax liability is less than $2,500, you can pay it in full with a timely filed return.  Employers who have an estimated annual employment tax liability of $1,000 or less may be eligible to file Form 944 (“Employer’s Annual Federal Tax Return”).
  • File Form 940 (“Employers Annual Federal Unemployment {FUTA} Tax Return”) for 2018. If your undeposited tax is $500 or less, you can either pay it with your return or deposit it.  However, if you deposited the tax for the for the year in full and on time, you have until February 11 to file the return.
  • File Form 943 (“Employer’s Annual Federal Tax Return for Agricultural Employees”) to report Social Security, Medicare and withheld income taxes for 2018. 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 year in full and on time, you have until February 11 to file the return.
  • File Form 945 (“Annual Return of Withheld Federal Income Tax”) for 2018 to report income tax withheld on nonpayroll items, including backup withholding and withholding on pensions, annuities, IRAs, etc. 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 year in full and on time, you have until February 11 to file the return.

FEBRUARY 28

File 2018 Forms 1099-MISC with the IRS

MARCH 15

2018 tax returns must be filed or extended for calendar-year partnerships and S corporations.  If the return isn’t extended, this is also the last day for those types of entities to make 2018 contributions to pension and profit-sharing plans.