NO...DO NOT use the Online software for any year except 2023.
For 2021, you'd have to buy download and install the "DESKTOP" software for 2021, and only on a fill MAC or Windows computer.
Then it can be prepared there.....but has to be printed and mailed in by yourself.
TurboTax® 2021 Prior Year Tax Prep - File Past Years' Taxes (intuit.com)
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AND, there is no longer anything called a 1040EZ anymore...that was eliminated a long time ago.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
