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DateTypeFormDescription
Jan 10Employees4070Due date of employees' report of tips to employer.
Jan 16Individuals1040-ESFinal installment of 2017 estimated tax.
Jan 31All EmployersW-2Give employees their copies of Form W-2 (earnings statement) for 2017.
Jan 31All Employers940Federal unemployment tax for 2017.
Feb 12All Employers941Social Security, Medicare and withheld income tax for the fourth quarter of 2017.
Feb 12All Employers945Annual report of Federal (nonpayroll) income tax withheld for 2017.
Feb 12Employees4070Due date of employees' report of tips to employer.
Feb 15IndividualsW-4File a new Form W-4 by this date to continue the exemption for another year.
Feb 28All Businesses1098, 1099File information returns with the IRS; applies only if not filed electronically (otherwise see April 2, below).
Mar 12Employees4070Due date of employees' report of tips to employer.
Mar 15Partnerships1065Last day to file a 2017 income tax return.
Mar 15S-Corporations1120-S2017 income tax return for calendar year corporations and pay any tax due.
Mar 15Partnerships, S-Corporations7004File application for automatic six-month extension to file 2017 income tax return for calendar-year entities.
Mar 15S-Corporations2553Last date to file Form 2553 to be treated as an S-Corporation beginning with 2018 (U.S. residents only).
Apr 2All Businesses1098, 1099File information returns with the IRS; applies only if filed electronically (otherwise see February 28, above).
Apr 10Employees4070Due date of employees' report of tips to employer.
Apr 17Individuals1040Income tax and self-employment tax return of U.S. residents for calendar year 2017.
Apr 17Individuals4868Last date for individuals to file application for automatic 6-month extension to file 2017 income tax return.
Apr 17Individuals1040-ESPayment of first installment of 2018 estimated taxes by U.S. residents.
Apr 17Partnerships8813Payment of first installment of 2018 partnership withholding tax for foreign partners.
Apr 17Corporations11202017 income tax return for calendar-year corporations and pay any tax due.
Apr 17Corporations7004File application for automatic six-month extension to file 2017 income tax return for calendar-year corporations.
Apr 17Corporations1120-WPayment of first installment of 2018 estimated taxes.
May 10Employees4070Due date of employees' report of tips to employer.
May 10All Employers941Social Security, Medicare and withheld income tax for the first quarter of 2018.
Jun 11Employees4070Due date of employees' report of tips to employer.
Jun 15Individuals1040-ESPayment of second installment of 2018 estimated taxes by U.S. residents.
Jun 15Partnerships8813Payment of second installment of 2018 partnership withholding tax for foreign partners.
Jun 15Corporations1120-WPayment of second installment of 2018 estimated taxes.
Jul 10Employees4070Due date of employees' report of tips to employer.
Aug 10All Employers941Social Security, Medicare and withheld income tax for the second quarter of 2018.
Aug 10Employees4070Due date of employees' report of tips to employer.
Sep 10Employees4070Due date of employees' report of tips to employer.
Sep 17Individuals1040-ESPayment of third installment of 2018 estimated taxes by U.S. residents.
Sep 17Partnerships1065File 2017 calendar return; applies only if you were given additional 6 month extension.
Sep 17Partnerships8813Payment of third installment of 2018 partnership withholding tax for foreign partners.
Sep 17S-Corporation1120-SFile 2017 calendar return; applies only if you were given additional 6 month extension.
Sep 17Corporations1120-WPayment of third installment of 2018 estimated taxes.
Oct 10Employees4070Due date of employees' report of tips to employer.
Oct 15Individuals1040, 1040AFile 2017 income tax return; applies only if you have an automatic 6-month extension.
Oct 15Corporations1120File 2017 income tax return; applies only to timely requested 6-month extension.
Nov 13All Employers941Social Security, Medicare and withheld income tax for the third quarter of 2018.
Nov 13Employees4070Due date of employees' report of tips to employer.
Dec 10Employees4070Due date of employees' report of tips to employer.
Dec 17Partnerships8813Payment of fourth installment of 2018 partnership withholding tax for foreign partners.
Dec 17Corporations1120-WPayment of fourth installment of 2018 estimated taxes.