How far back to amend for capital loss carryovers
Have an erroneous capital loss from 2012, and it has carried forward to this year (it kept slipping through the cracks). I know for this year there shouldn't be any carryforward, and there also shouldn't be any for any prior year, so can I just not claim the amount from prior tax returns on the 2022? Also, if I need to amend, how far back do I go? Three years, back to 2012, or just fix it for 2022? If there is any actual IRS guidance out there that would be much appreciated!