Can I use turbo tax to file me 2018 taxes in 2020?

[DoninGA]

To complete and file a 2018 tax return using TurboTax you would need to purchase, download and install on a personal computer one of the 2018 desktop editions from this website - https://turbotax.intuit.com/personal-taxes/past-years-products/

A 2018 tax return can only be printed and mailed, it cannot be e-filed.

[Texas Roger]

To file a 2018 tax return, you must buy, download and install on your computer the 2018 program: https://turbotax.intuit.com/personal-taxes/past-years-products/

A 2018 return can no longer be efiled. You must print and mail it yourself to get it accepted. Use the filing instructions that print with your return for what to include and where to mail it.