United States: 2018 Tax Calendar

Last Updated: February 14 2018
Article by Robert Swenson

To help you make sure you don't miss any important 2018 deadlines, we've provided this summary of when various tax-related forms, payments and other actions are due. Be aware that some deadlines have been moved up or pushed back compared to previous years. Please review the calendar and let us know if you have any questions about the deadlines or would like assistance in meeting them.

Date

Deadline For:

March 15

Calendar-Year S Corporations: Filing a 2017 income tax return (Form 1120S) or filing for an automatic six-month extension (Form 7004), and paying any tax due.

Calendar-year Partnerships: Filing a 2017 income tax return (Form 1065 or Form 1065-B) or requesting an automatic six-month extension (Form 7004).

April 17

Individuals: Filing a 2017 income tax return (Form 1040, Form 1040A or Form 1040EZ) or filing for an automatic six-month extension (Form 4868), and paying any tax due. (See June 15 for an exception for certain taxpayers.)

Individuals: Paying the first installment of 2018 estimated taxes, if not paying income tax through withholding (Form 1040-ES).

Individuals: Making 2017 contributions to a traditional IRA or Roth IRA (even if a 2017 income tax return extension is filed).

Individuals: Making 2017 contributions to a SEP or certain other retirement plans (unless a 2017 income tax return extension is filed).

Individuals: Filing a 2017 gift tax return (Form 709) or filing for an automatic six-month extension (Form 8892), and paying any gift tax due; or filing for an automatic six-month extension (Form 4868) to extend both Form 1040 and, if no gift tax is due, Form 709.

Household Employers: Filing Schedule H (Form 1040), if wages paid equal $2,000 or more in 2017 and Form 1040 is not required to be filed. For those filing Form 1040, Schedule H is to be submitted with the return and is thus extended to the due date of the return.

Trusts and estates: Filing an income tax return for the 2017 calendar year (Form 1041) or filing for an automatic five-and-a-half month extension to October 1 (Form 7004), and paying any income tax due.

Calendar-Year C Corporations: Filing a 2017 income tax return (Form 1120) or filing for an automatic six-month extension (Form 7004), and paying any tax due.

Calendar-Year Corporations: Paying the first installment of 2018 estimated income taxes.

April 30

Employers: Reporting income tax withholding and FICA taxes for first quarter 2018 (Form 941), and paying any tax due.

May 15

Exempt Organizations: Filing a 2017 calendar-year information return (Form 990, Form 990-EZ or Form 990-PF) or filing for an automatic six-month extension (Form 8868) and paying any tax due.

Small Exempt Organizations (with gross receipts normally of $50,000 or less): Filing a 2017 e-Postcard (Form 990-N), if not filing Form 990 or Form 990-EZ.

June 15

Individuals: Filing a 2017 individual income tax return (Form 1040) or filing for a four-month extension (Form 4868), and paying any tax and interest due, if you live outside the United States.

Individuals: Paying the second installment of 2018 estimated taxes, if not paying income tax through withholding (Form 1040-ES).

Calendar-Year Corporations: Paying the second installment of 2018 estimated income taxes.

July 31

Employers: Reporting income tax withholding and FICA taxes for second quarter 2018 (Form 941), and paying any tax due.

Employers: Filing a 2017 calendar-year retirement plan report (Form 5500 or Form 5500-EZ) or requesting an extension.

September 17

Individuals: Paying the third installment of 2018 estimated taxes, if not paying income tax through withholding (Form 1040-ES).

Calendar-Year Corporations: Paying the third installment of 2018 estimated income taxes.

Calendar-Year S Corporations: Filing a 2017 income tax return (Form 1120S) and paying any tax, interest and penalties due, if an automatic six-month extension was filed.

Calendar-Year S Corporations: Making contributions for 2017 to certain employer-sponsored retirement plans, if an automatic six-month extension was filed.

Calendar-Year Partnerships: Filing a 2017 income tax return (Form 1065 or Form 1065-B), if an automatic six-month extension was filed.

October 1

Trusts and Estates: Filing an income tax return for the 2017 calendar year (Form 1041) and paying any tax, interest and penalties due, if an automatic five-and-a-half month extension was filed.

Employers: Establishing a SIMPLE or a Safe-Harbor 401(k) plan for 2018, except in certain circumstances.

October 15

 

Individuals: Filing a 2017 income tax return (Form 1040, Form 1040A or Form 1040EZ) and paying any tax, interest and penalties due, if an automatic six-month extension was filed (or if an automatic four-month extension was filed by a taxpayer living outside the United States).

Individuals: Making contributions for 2017 to certain existing retirement plans or establishing and contributing to a SEP for 2017, if an automatic six-month extension was filed.

Individuals: Filing a 2017 gift tax return (Form 709) and paying any tax, interest and penalties due, if an automatic six-month extension was filed.

Calendar-Year C Corporations: Filing a 2017 income tax return (Form 1120) and paying any tax, interest and penalties due, if an automatic six-month extension was filed.

Calendar-Year C Corporations: Making contributions for 2017 to certain employer-sponsored retirement plans, if an automatic six-month extension was filed.

October 31

 

Employers: Reporting income tax withholding and FICA taxes for third quarter 2018 (Form 941) and paying any tax due.

November 15

 

Exempt Organizations: Filing a 2017 calendar-year information return (Form 990, Form 990-EZ or Form 990-PF) and paying any tax, interest and penalties due, if a six-month extension was previously filed.

December 17

 

Calendar-Year Corporations: Paying the fourth installment of 2018 estimated income taxes.

December 31

Employers: Establishing a retirement plan for 2018 (generally other than a SIMPLE, a Safe-Harbor 401(k) or a SEP).

The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

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