Here are the steps to carry back a net capital loss using Turbo Tax:
Select Findand enterlossesin the search bar
SelectLossesfrom the search results, thenGo
Select theRequest for Loss Carrybackbox
SelectContinueuntil you reach theNet Capital Loss Carrybacksscreen
The maximum net capital loss that you can carry back is listed. Enter the amount(s) you wish to carry back for each applicable year, then selectContinue