By TurboTax Learn more about filing a tax extension, late payment and late filing penalties, and what to do if you can’t pay your taxes. For information on the third coronavirus relief package, please visit our “American Rescue Plan: What Does it Mean for You and a Third Stimulus Check” blog post. The federal tax return filing deadline for tax year 2021 was April 18, 2022:If you missed the deadline and did not file for an extension, it’s very important to file your taxes as soon as possible. Filing with TurboTax is fast, easy, and guaranteed to get you the biggest refund you deserve. Our Turbo…