sorry for stupid question, but is anyone can tell me-is commission is deductible? if i make 10000 profit, but spend 5000 on comissions,from what i have to pay taxes? from 10000 or profit -commisions? one more-from tax saving point-what is best way, to reduce taxes from short term capital gains and protect your money from beig sued for something like car accident? having a own company is best? thank you!