If you use that account with paid TurboTax (thru turbotax.com), or if you qualify for it the IRS Free File version (thru freefile.intuit.com), you should have access to your prior year returns; at least that's how it's been done in prior years. Note that IRS Free File does not have many of the value-added features of turbotax.com, such as Refund Advance. Also, you may not be able to import your 2019 numbers into your 2020 return if you use a different TurboTax account for 2020. (TurboTax staff, please chime in if you have any additional info.)
