BMW Lao Da: Can you use schedule C to claims loss? From what I read from IRS pub 550 (page72), as a trader you have to use Form 4797 (if you choose M2M) to report gain and loss. If you have big loss form 4797 may reduce your regular tax. But the AMT kicks in you may end up paying similar amount of tax.
From what you asked it looks you have not claimed to use Mark-to-Market account as a trader. So here is the list:
1. you can use schedule C to report biz expenses as a trader. That will reduce your tax.
2. you have to report your each trade using Schedule D. You should be able to download these trades from your brokage firm.
3. Do declear M2M status before 4/15 together with your return so next year you do not need to report each trade but the total gain or loss in form 4797.
4. do file 3115 form when you report your tax next year.
This is what I have learned from last a couple of days.