January 15

2020 fourth quarter estimated tax payments due for individuals (Form 1040-ES), as well as trusts (Form 1041-ES) that operate under calendar tax years.

March 15

2020 income tax returns due for partnerships (Form 1065) and S corporations (Form 1120S) that operate under calendar tax years. Any tax due must be paid by this date, but Form 7004 may be filed for an automatic six-month extension of time to file the return.

April 15

2020 income tax returns due for individuals (Form 1040), corporations (Form 1120), and trusts (Form 1041) that operate under calendar tax years. Any tax due must be paid by this date, but Form 4868 (for individuals) may be filed for an automatic six-month extension of time to file the return, or Form 7004 (for corporations or trusts) may be filed for an automatic five-month extension of time to file the return.

2021 first quarter estimated tax payments due for individuals (Form 1040-ES), as well as corporations (Form 1120-W) and trusts (Form 1041-ES) that operate under calendar tax years.

June 15

2020 second quarter estimated tax payments due for individuals (Form 1040-ES), as well as corporations (Form 1120-W) and trusts (Form 1041-ES) that operate under calendar tax years.

September 15

2020 extended income tax returns due for corporations (Form 1120), S corporations (Form 1120S), partnerships (Form 1065), and trusts (Form 1041) that operate under calendar tax years.

2021 third quarter estimated tax payments due for individuals (Form 1040-ES), as well as corporations (Form 1120-W) and trusts (Form 1041-ES) that operate under calendar tax years.

October 15

2020 extended income tax returns due for individuals (Form 1040).

December 15

2021 fourth quarter estimated tax payments due for corporations (Form 1120-W)that operate under calendar tax years.

 

For more information, see IRS Publication 509 or the IRS instructions for the applicable form.