how much tax loss harvesting can i use in a year 
if your capital losses exceeds your capital gains you can claim excess loss of the lesser of 3 000 1 500 if married filing separately or your total net loss shown on line 16 of schedule d form 1040 according to the irs if have a greater net capital loss that that you can carry the loss forward to later years 1the bottom linetax loss harvesting is the timely selling of securities at a loss to offset the amount of capital gains tax owed from selling profitable assets an individual taxpayer can write off up to 3 000 in net losses annually for more advice on how to maximize your tax breaks consider consulting a professional tax advisor 