Important Dates


Filing and Payment Due Dates (for most calendar year filers):

Visit for a complete listing of all federal due dates.

  • JANUARY 15: 4th quarter estimated taxes
  • JANUARY 20th: Approximate start date of IRS e-File season
  • MARCH 15TH: Form 1120S (S-corps) and Form 1065 (partnerships)

  • APRIL 15TH: Due date for -
    • Form 1040, 1040EZ, 1040A for individuals
    • Form 1120 for regular C-Corps
    • 1st quarter estimated taxes

TIP: look for a "community shred day" to be hosted by a local bank - usually around the end of April.  Now is a great time to clean up!

  • May 15th: Form 990, 990-EZ, or 990-N for calendar year exempt organizations
  • June 15th: 2nd quarter estimated taxes
  • July 31st: Form 5500 or 5500-EZ for calendar year employee benefit plans
  • August 15th: Form 1065 partnership returns on a timely filed extension
  • September 15th:  Form1120S  s-corp returns on a timely filed extension
  • September 15th: 3rd quarter estimated taxes
  • October 15th: Individual and c-corp returns (Forms 1040 and 1120) on a timely filed extension
  • October 15th: Closing day for eFiling season.  IRS eFile generally re-opens in mid-January. Filings prepared after Oct 15th will need to be mailed in.


Quarterly Estimated Taxes:

  • April 15th
  • June 15th
  • September 15th
  • January 15th

Go to the Forms, Information & Links page for estimated tax coupons