Generating a consistent net profit of $100 a day through day trading typically requires a substantial starting capital account, often ranging between $10,000 to $30,000 or more, to adhere to sensible risk management rules. Professional traders generally aim to risk no more than 1% to 2% of their total trading capital on a single trade, meaning achieving small daily returns requires adequate capital cushion to absorb inevitable losing days without wiping out the entire portfolio balance or violating regulatory pattern day trading minimums.