So here is my question. When getting taxed on trades such as short term ones as a day trader, is it a end of the year thing? Quick scenario, say I had opened a 25k account to day trade with but at the end of the year only made 3k, thus putting me at 28k, but in reality I had won 30k day trading but also lost 30k and ended up with only 3k more then when I opened my account with 25k. Would i be taxed on the 30k I won?? Plus the 3k? Or just the 3k? I'm really confused, because if you're taxed on 33k then technically you would most likely put yourself in the negative and owe lots of money in taxes...is this correct? Thanks for any help.