Investors & landlords

Well, TurboTax is right, you can't enter a sale that occurred in 2018 in a 2020 income tax return.  And, because you didn't use TurboTax last year it can't simply transfer the remaining capital loss from the 2019 income tax return.  You have to enter the capital loss remaining as of 12/31/19 yourself.

Here's where you do that in the desktop program.  I assume the online program is similar: