Summer Tax Calendar: Key Deadlines for Businesses and Other Employers

This calendar notes important tax deadlines for the third quarter of 2021:

July 15

• If the monthly deposit rule applies, employers must deposit the tax for payments in June for Social Security, Medicare, withheld income tax and nonpayroll withholding.

August 2

• The second quarter Form 941 (“Employer’s Quarterly Federal Tax Return”) is due today. (If your tax liability is less than $2,500, you can pay it in full with a timely filed return.) If you deposited the tax for the quarter in full and on time, you have until August 10 to file the Return.

August 16

• If the monthly deposit rule applies, employers must deposit the tax for payments in July for Social Security, Medicare, withheld income tax and nonpayroll withholding.

September 15

Third-quarter estimated tax payments are due for individuals, trusts, and calendar-year corporations and estates.

• If an extension was obtained, calendar-year partnerships should file their 2020 Form 1065 by this date.
• If an extension was obtained, calendar-year S corporations should file their 2020 Form 1120S by this date.
• If the monthly deposit rule applies, employers must deposit the tax for payments in August for Social Security, Medicare, withheld income tax and nonpayroll withholding.

September 15

• Calendar-year trusts and estates on extension must file their 2020 Form 1041.

Download Summer 2021 Tax Calendar

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