To complete and file a 2020 tax return using TurboTax you would need to purchase, download and install on a personal computer one of the 2020 desktop editions from this website - https://turbotax.intuit.com/personal-taxes/past-years-products/
A 2020 tax return can only be printed and mailed, it cannot be e-filed using TurboTax.
Note - If the 2020 tax return being filed has a tax refund, the refund will not be paid. The 2020 return with a refund had to be filed on or before May 17, 2024.
