Suppose you aim to be an active day trader, making more than three trades per week. In that case, you’re subject to the Financial Industry Regulatory Authority (FINRA) “pattern day trader rule” that requires that you have a minimum of $25,000 in your trading account. If you can’t meet that requirement, you can still day trade – you can’t make more than three trades per week until you’ve built your investment account up to $25,000. Minimum day trade requirements may vary from broker to broker, but most just go by the FINRA pattern day trader rule of $25,000.