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


March 1 – Forms 1097, 1098, 1099-MISC, 3921, 3922, W-2G (to IRS)

March 1 – Form 1040/1040-SR

March 1 – Forms 1094-B, 1095-B, 1094-C, 1095-C (to IRS)

March 1 – Forms 8027, 8027-T

March 1 – Form 730 (Jan 2021), Form 2290 (Jan. 2021)

March 2 – Forms 1095-B, 1095-C (to recipients)

March 10 – Form 4070 (Feb. 2021)

March 15 – Form 1042, 1042-S

March 15 – Form 1065, 1120-S, Sched. K-1s (to recipients)

March 15 – Form 2553

March 31 – Forms 1098, 1099-MISC, 3921, 3922, W-2G (e-File)

March 31 – Forms 1094-B, 1095-B, Form 1094-C, 1095-C (e-File)

March 31 – Forms 8027, 8027-T (e-File)

March 31 – Form 730 (Feb. 2021), Form 2290 (Feb. 2021)

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Relevant Tax Management Portfolios

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The Portfolio Interest Expense Deductions describes in detail the basic rules relating to the allowance of and limitations on deductions for interest expenses as set forth in §163(a).

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Investment in Qualified Opportunity Zones

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Qualified Business Income Deduction: Section 199A

The Portfolio, Qualified Business Income Deduction: Section 199A, No. 537, discusses a new provision of the Internal Revenue Code, §199A, which provides a 20% deduction for qualified business income.

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