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2021 Tax Filing Deadlines and Extensions for 2020 Tax Year

We have compiled a list of 2021 tax filing deadlines and extensions for the remainder of the 2020 tax year. It is important that you meet these deadlines and if you need help with your tax filing, or have questions, please contact us below.

IRS Tax Form

Deadline

Form 5500 (Employee Benefit Plans)

August 2, 2021

Q3 2021 Individual and C Corporation Estimated Tax Payments

September 15, 2021

Extended Form 1065 and Form 1120-S Returns Due

September 15, 2021

Extended Form 1041 Returns Due

September 30, 2021

Extended Form 1040 and Form 1120 Returns Due

October 15, 2021

Extended Form 990 Returns Due

November 15, 2021

Q4 2021 C Corporation Estimated Tax  Payments

December 15, 2021

If you have any questions about any of the deadlines, please contact your ALL tax advisor or call us at 617-738-5200.

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