2021 tax return Schedule D, line 21 is -1948$ but on the Carryover I can't enter the positive value. If I enter 0, my return increase - how can enter a negative value?

[rjs]

I'm not sure I understand the problem. You enter the negative amount from your 2021 Schedule D with a minus sign in front of the number. See the screen shot below.

[HelenC12]

I tried to recreate your situation in TurboTax. On the Let's get some info from your 2021 tax return screen, I was able to enter a negative number in the Allowable Loss box.  The negative amount carried over into Schedule D. 

If you transferred last year's TurboTax return over, you don't have to do a thing—we've already entered it for you.

Otherwise, follow these instructions:

1. Sign in to your TurboTax account and open your return by selecting Continue or Pick up where you left off in the progress tracker
2. In the search bar, search for capital loss carryover, and then select the Jump to link in the search results
3. Select Yes on the screen Did you have investment losses you couldn't claim in 2021?
4. Enter the info about your capital loss on the following screens

  

[Edited 03-20-2023|5:40 AM PST]

@mert-tuncer0