You may have over $25,000 in your account. If you buy any non-marginable stocks, or any options contracts, their cost will be deducted from your account's Equity with Margin Value. If those purchases bring your account's EMV below $25,000, even though there's more than $25,000 cash value to your account, two things will happen To You. 1. Your intraday margin will be back to 2:1, not 4:1. 2. If you close three positions the same day you opened them, you will not be able to open any new positions for the next 4 days, or until your account's EMV goes back over $25,000. In this situation, you would probably scramble to sell the non-marginable stock and the options contracts, to bring you back over $25,000 EMV. You may have $25,000 in your account, $30,000. You think that you aren't affected by the PDT rules. Think again.