I need to file my 2020 taxes, can I include this in the 2021?

[NCperson]

No, no and NO! '

any income from 2020 must be filed on a 2020 tax form

any income from 2021 must be filed on a 2021 tax form!

no mixing allowed.  

[rjs]

You can no longer use TurboTax Online to file for 2020. TurboTax Online is only for the current tax year, which is now 2021. To file for 2020 you have to use the CD/Download TurboTax software for 2020. You can purchase a download at the following link.

Past Years' Products

You might get a better price from a reputable online seller that still has TurboTax for 2020 in stock.

Tax returns for past years cannot be e-filed. You will have to print your 2020 tax return, sign it, and file it by mail.