Tax Deadlines 2021

The following is a compilation of various deadlines for filing returns with the IRS and making various payments. Tax Deadlines 2021

Estimated tax payments (Form 1040ES)

  • April 12, 2021
  • June 15, 2021
  • September 15, 2021
  • January 17, 2022

Tax Deadlines Occurring in Calendar Year 2021 (for Tax Year 2020 Returns)

Individual tax returns (Forms 1040, 1040NR, 1040A, and 1040EZ)

  • First deadline is April 15, 2021.
  • Extended deadline is October 15, 2021.

Partnership returns (Form 1065)

  • First deadline is March 15, 2021 (note change of deadline).
  • Extended deadline is September 15, 2021.

Trust and Estate income tax returns (Form 1041)

  • First deadline is April 15, 2021.
  • Extended deadline is October 2, 2021
  • Note change: extensions for fiduciary returns are now five and a half months instead of five months.

C-Corporation returns (Form 1120)

  • First deadline is April 15, 2021 for corporations on a calendar year (note change of deadline).
  • Extended deadline is October 15, 2021 (note change of deadline, corporations are now permitted a six-month automatic extension).
  • For corporations on a fiscal year other than a calendar year, the first deadline is the 15th day of the fourth month following the end of the corporation’s fiscal year.
  • EXCEPTION: for corporations with a fiscal year from July 1 to June 30, the first deadline will remain September 15th (which is the 15th day of the third month following the end of the fiscal year) and the extended deadline will remain February 15 (five months after the first deadline) through fiscal year ending June 30, 2026.
  • Starting with the fiscal year ending June 30, 2027, the deadline moves to October 15th (the 15th day of the fourth month following the end of the tax year) and the extended deadline moves to March 15th (six months after the first deadline).

S-Corporation returns (Form 1120S)

  • First deadline is March 15, 2021 for corporations on a calendar year (note there is no change of deadline).
  • Extended deadline is September 15, 2021.

Foreign Bank Account Reports (FinCen Form 114)

  • Deadline is April 15, 2021 (note change of deadline).
  • Extended deadline is October 15, 2021 (note: this is the first time ever that extensions are available for FBARs).
  • Note that unlike tax returns, FBARs do not have a next-business-day rule if the deadline falls on a Saturday, Sunday, or legal holiday.

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