Understanding the Rules of Day Trading

To understand the concept of day trading power, you must know a few other key facts first. The definition of what a day trader is and what constitutes a day trade are probably the most important to understand. Day traders are, simply put, traders who do daily trades that are online, with short term investments. Day trading power is the limit of the amount of these trades that can be done by an individual trader, which also includes a minimum amount of trades that can be transacted per day. Figuring the amount can be complicated and for this reason, it is advisable to get your feet wet in the field of stock trading with the guidance of a certified stock broker who can worry about the rules governing trades, whether they qualify as day trades and therefore culpable under the day trading power rules or not.

Once a trading account has been designated as a day trader account, you must calculate the day trading power of that account. That formula is fairly complex, and again is not something that the average novice trader will be well informed about. Unless you are a financial whiz kid or a math expert, this is probably one realm that you want to leave to the trained and paid professionals.

If you are at all curious about what this formula for calculating day trading power and day trading buying power is it goes like this:
4X Maintenance Excess = DTBP.
For those of you currently scratching your head, you must also figure what maintenance excess as well. That calculation is:
Total Positions + Total Cash = Total Equity
Total Equity-Non-Margin Positions= Margin Equity
Margin Equity-Maintenance Requirement= Maintenance Excess

These figures are based on the previous day's closing prices.

Along with figuring DTBP and knowing what makes a trade account a day trader account, you must understand the minimum equity requirements for such an account. In most cases that amount is fairly substantial at $25,000, and can be as much as $5000 more than that. If your day trading account goes below that minimum equity requirement, then you will be issued a "call" to bring it up to minimum, if not, your trades left in the account can be liquidated. Your day trading power can only remain operational if you maintain your minimum equity requirement and your trading activity remains within the set limits.