Is the deadline to file back taxes for 2021 on April 15 or April 18?

christiemoreau · ‎April 15, 2025

Can I receive a refund if I file 2021 taxes on April 18, 2025?

xmasbaby0

Midnight on April 15, 2025----your envelope has to be postmarked no later than midnight 4-15-2025 or the refund is forfeited. A 2021 return can only be filed by mail; it cannot be e-filed.

**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**

JamesG1

You should be able to receive a refund.

This IRS Taxpayer Advocate Service website states that the 2021 tax return filing due date was April 18, 2022.

Retain a copy of this page should there be an issue with your tax return at a later time.

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Noseynancy95

It is April 18th because the filing date was April 18th 2022!!! 3 years from that is April 18th 2025!

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Is the deadline to file back taxes for 2021 on April 15 or April 18?