To complete and file a prior tax return (2020 thru 2022) using TurboTax you would need to purchase, download and install on a personal computer one of the desktop editions for each tax from this website - https://turbotax.intuit.com/personal-taxes/past-years-products/
A 2021 tax return can only be printed and mailed, it cannot be e-filed using TurboTax.
