You cannot use TurboTax Online to file for past years. You have to use the CD/Download TurboTax software that you install on a Windows or Mac computer. There is no free filing for past years.
TurboTax for 2017 and 2018 is no longer available.
You can purchase TurboTax for 2019, 2020, and 2021 at the following link. TurboTax for 2019 will only be available for another few weeks, so buy it and install it now, including any states that you need.
Past Years' Products
Tax returns for past years cannot be e-filed. You will have to print the tax returns, sign them, and file by mail. Mail each year in a separate envelope.
