Important Dates

Important Tax Dates

Below is a listing of important tax dates. Please note these are based on a calendar year. If your company uses a fiscal year, your dates will be slightly different.

Tax deadlines never fall on weekends or legal holidays. If a deadline date falls on a holiday or weekend, taxes will typically be due the next business day; however, you should confirm with the IRS. Contact our team at Casey Peterson, LTD for more information.


2021 Tax Dates

January 15, 2021 – 4th Quarter 2020 Estimated Tax Payment Due
If you are required to pay estimated tax, your quarterly estimated tax from October, November, and December 2020 is due.

March 1, 2021 – Farmers 2020 Federal Tax Return Due
If you are in the business of farming or ranching, your 2020 farm tax return is due.

March 15, 2021 – Partnerships and S Corporations 2020 Federal Tax Return Due
Both partnerships and S corporations are required to file their taxes by this date.

April 15, 2021 Calendar Year Estates, Trusts, and C Corporations 2020

April 15, 2021 – 1st Quarter 2021 Estimated Tax Payment Due
If you are required to pay estimated tax, your quarterly estimated tax from January, February, and March is due.

April 30, 2021 – 1st Quarter Payroll Reports 1/1 to 3/31 due by 4/30

May 17, 2021 – Individuals Federal Tax Return Due

May 17, 2021 – Exempt Organizations 2020 Federal Tax Return Due
In general, most exempt organizations are required to file a return annually.

June 15, 2021 – 2nd Quarter 2021 Estimated Tax Payment Due
If you are required to pay estimated tax, your quarterly estimated tax from April, May, and June is due.

July 31, 2021 – 2nd Quarter Payroll Reports 4/1 to 6/30 due by 7/31

September 15, 2021 – 3rd Quarter 2021 Estimated Tax Payment Due
If you are required to pay estimated tax, your quarterly estimated tax from July, August, and September is due.

September 15, 2021 – Partnerships and S Corporations Extended 2020 Federal Tax Return Due
If you filed for an extension, your six months are up and your federal income taxes are due.

September 30, 2021 – Trust and Calendar Year Estates Extended 2020 Federal Tax Return Due
If you filed a 5 1/2-month extension on your Estates and Trusts return, it is now due.

October 15, 2021 – Individuals and C Corporations Extended 2020 Federal Tax Return Due
If you filed for an extension, your six months are up and your federal income taxes are due.

October 31, 2021 – 3rd Quarter Payroll Reports 7/1 to 9/30 due by 10/31

January 15, 2022 – 4th Quarter 2021 Estimated Tax Payment Due
If you are required to pay estimated tax, your quarterly estimated tax from October, November, and December 2020 is due.

January 31, 2022 – 4th Quarter Payroll Reports 10/1 to 12/31 due by 1/31/202


Full IRS Tax Calendar

2020 Tax Calendar
For a full listing of important dates for employers, individuals, and others, view IRS Publication 509.

IRS Tax Calendar for Businesses and Self-Employed
The IRS provides a tax calendar online and as a download for businesses and those who are self employed with push notifications for important dates.


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