你現在收入30萬,rep loss 15萬,按15萬交稅。 節約大約15萬x24% this year.
如果delayed loss 到以後,你賣了房, 增值40萬,收入30萬。total 70萬, 再用這15萬loss, , your capital gain rate (last 15萬) reduced from 20% to 15% and your income rate still in 30-15=15萬, still save 15*.24%, so the difference of reporting loss this year compared 以後賣房再report, delay it could save you 15萬*5%