2021 Tax Calendar

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Stay up to date on key 2021 IRS form filing dates

This 2021 tax calendar is a reference document of dates included in the IRS Tax Calendar for Businesses and Self-Employed Individuals. View specific due dates by month for filing tax forms, paying taxes, and other actions required by federal tax law. Bookmark this website to track key 2021 tax deadlines and avoid penalties as well as late fees.

Important 2021 Tax Dates

February 1: Employer – Form W-2; Payors – Form 1099-NEC

March 1: Payors – Form 1099-MISC

March 15: Partnerships, LLCs – Form 1065; S Corporations – Form 1120S

April 12: Form 1040/1040-SR, Form 730 (Jan 2021)

April 15: Corporations – Form 1120; Estates and Trusts – Form 1041; FBAR – FinCen Form 114

May 17: Individuals – Form 1040

May 17: Exempt Organizations – Forms 990

August 2: Employee Benefit Plans – Forms 5500


November 1 – Form 941 (2021 Q3)

November 1 – Form 720 (2021 Q3), 730 (Sep. 2021), Form 2290 (Sep. 2021)

November 10 – Form 941 (2021 Q3)

November 10 – Form 4070 (Oct. 2021)

November 15 – Forms 990

November 30 – Form 730 (Oct. 2021), 2290 (Oct. 2021)

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Relevant Tax Management Portfolios

Portfolio 539

Net Operating Losses-Concepts and Computations

Bloomberg Tax Portfolio, Net Operating Losses — Concepts and Computations, No. 539, describes and illustrates the tax principles for using a net operating loss sustained by a taxpayer as a net operating loss deduction under §172.

Portfolio 780-4th

Net Operating Losses and Other Tax Attributes

This Portfolio analyzes the post-acquisition rules, §§381 through 384, as applied to corporations with a net operating loss or other favorable tax attributes.

Portfolio 607-3rd

Farm and Ranch Expenses and Credits

This Portfolio describes, analyzes, and illustrates the federal income tax treatment of expenditures by farmers and ranchers, including deductions, capital expenditures, and credits.

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