Hello XXXXXXXXXXX,
You can use the capital loss carry forward that you have to offset gains that you have on your federal return.
Your adjusted gross income from your federal return then transfers over to your California state return, so you are receiving credit for those losses on your state return as well as your federal return. There is no need to actually make a separate entry on your CA return to claim these losses. They will already be reflected in your federal adjusted gross income which then transfers to your state return.
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Thank you XXXXXXXXXXX
Accountant
25+ years tax consulting. Specializing in returns for US citizens living abroad