All businesses. Give annual information statements (Forms 1099) to recipients of certain payments you made during 2017. Payments that are covered include (1) amounts paid in real estate transactions;(2) amounts paid in broker and barter exchange transactions; and (3) payments to attorneys.
Employers. For Social Security, Medicare, withheld income tax, and nonpayroll withholding, deposit the tax for payments in January if the monthly rule applies.
Individuals. If you claimed exemption from income tax withholding last year on the Form W-4 you gave your employer, you must file a new Form W-4 to continue your exemption for another year.
Employers. Begin withholding income tax from any employee’s pay who claimed exemption from withholding in 2017, but did not provide a new Form W-4 to continue the exemption for 2018.
Individuals. Make a payment of your estimated tax for 2017 if you did not pay your income tax for the year through withholding (or did not pay enough in tax that way). Use Form 1040-ES. This is the final installment date for 2017 estimated tax. However, you don’t have to make this payment if you file your 2016 return and pay any tax due by January 31, 2018.
Employers. For Social Security, Medicare, withheld income tax, and nonpayroll withholding, deposit the tax for payments in December 2017 if the monthly rule applies.