2021 Tax Calendar


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Stay up to date on key 2021 IRS form filing dates

This 2021 tax calendar is designed to give you a quick reference to the most common forms and due dates for individuals, businesses, and tax-exempt organizations. 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

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

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Additional Resources

Best Practices When E-Filing Returns

Avoid future problems by following these best practices for e-filing.

Common Mistakes in Tax Preparation

Avoid errors that can occur when preparing tax returns by learning these common mistakes.

Top Audit Triggers

Avoid these common issues that may trigger an audit by the IRS.

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