2021 Tax Due Dates

2021 calendar

First Quarter


  • 15th – elf-employed estimated quarterly tax payments for Q4 of 2020 are due.
  • 30th – All Employers – Give your employees their copies of Form W2 for 2020. If an employee agreed to receive Form W2 electronically, have it posted on a website and notify the employee of the posting.

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  • 1st – 1099-NEC for non-employee compensation must be filed with the IRS and furnished to contractors. If you are an independent contractor, you should receive a copy of the form around this date.

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  • 1st – Farmers and fishermen who didn’t pay all estimated tax payments must file an income tax return and pay any tax due by March 1. If all estimated taxes were paid by January 15, 2021, the due date for filing your return is April 15
  • 15th – S corporation and partnership tax return due date for calendar-year businesses are due. This is also the deadline to file an S corporation and partnership tax extension

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Second Quarter


  • 15th – TAX DAY! – 2020 Individual tax returns due
    • Sole proprietorship and single-member LLC tax returns on Schedule C with your personal income tax return (Form 1040).
    • This is the corporation tax deadline.
    • If you pay quarterly taxes, the first quarter’s payment for 2021 is due this day.
    • Today is the last day to make a contribution to a retirement or other tax-advantaged savings accounts, such as a traditional IRA, Roth IRA, Health Savings Account. The deadline for contributing to a SEP IRA and a solo 401(k) is April 15 but may be extended by filing a 6-month extension.
    • Report of Foreign Bank and Financial Accounts (FBAR) is due. This applies to business-owned foreign accounts.
    • Partnerships, LLC, and S corporation shareholders should file report income and deductions from their Schedule K-1 with their personal income tax returns on this date or request an extension of time to file.

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  • 15th The second payment of quarterly estimated tax payments for 2021 is due.

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Third Quarter

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  • 15th -The third estimated quarterly tax payment for 2021 is due on this date.
  • 15th – Extended deadline for calendar-year partnerships and multiple-member LLCs who file Form 1065 for their business. It’s also the S corporation business tax extension deadline (for the business’ return, not the owners). So if your business files a calendar-year Form 1120-S and filed an extension this year, you should file by September 15.


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Fourth Quarter


  • 15th – This the due date for sole proprietors, single member LLCs, S corporation owners, partnerships, and corporations with a tax extension.

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  • 1st – Consider making year-end tax moves to optimize your tax outcome. While Dec. 1 isn’t an official deadline, noting the date on your calendar can give you a nudge to explore your options before the year is out.
  • 15th – The fourth estimated quarterly tax payment for corporations for 2021 is due on this date. Please note the fourth-quarter payment is due at different times for individuals and corporations.

January 2022

  • 18th – Individuals – 3rd Quarter  2021 Estimated Tax Payment due

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