2021 Important Tax Date by Month

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January 1 Adamson & Company, LLC is closed.


January 15
Deadline to pay fourth quarter estimated tax payment for year 2020.

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February 1Deadline to mail out 2020 tax year 1099s and W-2 to recipients.

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March 1 – Deadline for businesses to paper file Forms 1099, 1096 and 1095-C to the IRS.


March 2
– Deadline for Farmers and Fishermen to file individual tax returns.


March 15
– Deadline for Partnerships (1065) and S-Corporation (1120S) to file a tax return or to request an automatic six-month extension to file.


March 31
– Deadline to e-file Forms 1099, 1096 and 1095-C, except for 1099-NEC.

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April 2 — Adamson & Company, LLC is closed.


April 16
 – Adamson & Company, LLC is closed.


April 30
– Deadline for 940, 941 and TWC first quarter (ending March 31) filing.

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May 17 – Deadline for Individuals (1040), C-Corporations (1120C) and Trusts (1041) to file a tax return or request an automatic six-month extension to file (delayed deadline for those not affected by the Texas Winter Storm- Everyone except TX, OK and LA residents)

Deadline for Form 990 Franchise Tax to be filed.


May 31
– Adamson & Company, LLC is closed.

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June 15 – Deadline for Individuals (1040), C-Corporations (1120C) and Trusts (1041) to file a tax return or request an automatic six-month extension to file (delayed deadline for victims of the Texas Winter Storm- only TX, OK and LA residents)


Deadline for first quarter 2021 estimated payments.


Deadline for second quarter 2021 estimated payments.

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July 5 — Adamson & Company, LLC is closed.

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Aug. 2 – Deadline for 940, 941 and TWC second quarter (ending June 31) filing.
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September 6 – Adamson & Company, LLC is closed.


September 15
Final deadline for Partnerships (1065) and S-Corporation (1120S) to file a tax return if an extension was requested.

Deadline for third quarter 2021 estimated payments.


September 30
– Final deadline for Trusts (1041) to file if an extension was requested.

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October 15 – Final deadline for individuals (1040) and C- Corporations (1120C) to file if an extension was requested.


October 18
– Adamson & Company, LLC is closed.

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November 1 — Deadline for 940, 941 and TWC third quarter (ending September 30) filing.


November 15
— Final deadline for Form 990 Franchise Tax to be filed if an extension was requested.


November 24 – 26
 
— Adamson & Company, LLC is closed.

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December 24 & 24 — Adamson & Company, LLC is closed.


December 30 & 31
— Adamson & Company, LLC is closed.