After doing 5-10 rounds trips a day on the ES (or another future contract) as a small retail day trader paying retail commission, I realised commission was breaking my account. Say you pay $4.5 RT on ES as a small retail trader. You have a $10,000 account and trade only 1 lot per clip. 10 RTs per day at $4.5/RT are $45/day, almost 4 ticks or 1 ES point. It takes very good trading skills to make over 4 ticks per day on average just to cover the commission, hence I changed my trading style, I do only 1 trade a day now and my profit after comission improved. I used to pay $45/day * approx 230 days I trade in a year = $10,350 !!! i.e. I needed to double my money on a year just to break even, that was ludicrous. Still with 1 trade a day, it costs me just over 10% of my trading account over a year, that's still a very significant percentage of the account but can be done more easily. What percentage of your trading account do you pay in commsission in a year? If you're a retail day trader, most would pay 10-100%. Do you find it easy to beat the commission?