I pay less than 1c per share, but you have to do a certain volume and have a certain balance. I use interactive brokers a lot because they offer futures which is a whole beast in itself. Short-term capital gain taxes are a bit higher than long-term gains where you hold for more than 1 year. I don't know exactly what it is on top of my head but I think it is around 30%. We have a tax expert that does it. I honestly don't know much. Look at Scottrade or Ameritrade should be okay too.