Pattern day trader rule and what it means for your account

This article is general information, not legal, tax or investment advice. Brokers apply the rule through their own policies, and many set stricter requirements than the FINRA minimum. Rule changes have been proposed and may occur, so verify the current FINRA rules and confirm the details with your broker before relying on anything here.

A day trade is opening and closing the same position in the same security on the same trading day in a margin account. Buying 300 shares at 9:45 ET and selling them at 10:20 ET is one day trade. Shorting a stock and covering it before the close is also a day trade. Holding a position overnight and selling it the next morning is not, because it was not opened and closed on the same day.

How multiple orders are counted can vary by broker. Buying in three pieces and selling once in the same session is often counted as one day trade, while alternating buys and sells may count as several. This is one of the details worth confirming with your broker.

Under FINRA Rule 4210, a customer is generally treated as a pattern day trader if they execute four or more day trades within five business days in a margin account, provided those day trades make up more than 6% of the customer's total trades in that account during the same five day period. A broker may also designate an account as a pattern day trader account if it reasonably believes the customer will day trade, for example based on training or prior activity at the firm.

The five business days are a rolling window, not a calendar week. A trade on Thursday can count together with trades from the following Monday, Tuesday and Wednesday.

The percentage test matters mostly for very active accounts that also make many non day trades. Two worked calculations with hypothetical numbers show the difference.

• Account A makes 20 trades in five business days, 4 of them day trades. 4 / 20 = 20%, which is above 6%, so the account meets the definition.
• Account B makes 100 trades in five business days, 4 of them day trades. 4 / 100 = 4%, which is below 6%, so under the FINRA definition it does not meet the pattern.

For a typical small account that trades a few times a week, the 6% condition is almost always met, so the practical limit is simple: three day trades in any rolling five business day window keeps you below the threshold.

Here is a hypothetical week to make the window concrete. Monday, one day trade. Tuesday, none. Wednesday, two day trades. Thursday, none. That is three day trades in four business days. A fourth day trade on Friday would make four within five business days. If you wait until the following Monday, Monday's original trade has rolled out of the window and the count over Tuesday to Monday is three including the new trade.

• Monday, 1 day trade.
• Wednesday, 2 day trades.
• Friday, a fourth day trade would meet the threshold.
• Next Monday, the first trade has dropped out of the window.

A pattern day trader must maintain minimum equity of $25,000 in the margin account on any day they day trade. The equity must be in the account before day trading starts, and it can be a combination of cash and eligible securities. If equity falls below $25,000, the account is not permitted to day trade until it is restored to that level.

Equity moves with your positions. An account at $25,600 that loses $900 on an open position at the close of a session would start the next day at $24,700, below the minimum, even though nothing was withdrawn. Traders close to the line often keep a buffer so that one bad day does not lock them out.

Pattern day traders generally receive day trading buying power of up to four times the maintenance margin excess in the account, based on the previous day's close. Exceeding that buying power can trigger a day trading margin call. Under the FINRA framework, the account then has up to five business days to meet the call, with day trading buying power typically limited to two times maintenance margin excess in the meantime. If the call is not met, the account is generally restricted to trading on a cash available basis for 90 days or until the call is met.

Brokers can and often do apply tighter limits, shorter deadlines or different calculation methods. Your broker's margin disclosure is the document that applies to you.

If your margin account meets the definition and holds less than $25,000, the broker will typically flag it as a pattern day trader account and block further day trades until equity reaches the minimum. You can usually still open positions and close them on a later day, and you can still close existing positions. Some brokers send a warning before the fourth day trade, others enforce it automatically.

• Deposit funds or eligible securities to bring equity to at least $25,000.
• Wait for any restriction period your broker applies.
• Ask your broker whether a one time flag removal is available and what conditions apply.
• Consider whether a cash account fits your trading better.

Once an account is designated as a pattern day trader, the designation usually stays even if you stop day trading, unless the broker agrees to change it. Policies on flag removal differ widely, so ask directly.

The pattern day trader rule applies to margin accounts. A cash account is not subject to it, so you can make more than three day trades in five business days, but only with settled funds. US stock trades currently settle one business day after the trade date, often written as T+1.

Here is how that works in practice. With $8,000 of settled cash, you can buy and sell $8,000 of stock on Monday. The sale proceeds settle on Tuesday, so that money is available again from Tuesday. If you buy again on Monday with the unsettled proceeds and sell before they settle, many brokers will record a good faith violation. Repeated violations, or freeriding, can lead to a 90 day restriction to settled cash only.

• No $25,000 minimum and no four trade limit in a cash account.
• Only settled funds can be used without risking violations.
• No short selling and no leverage.
• Settlement timing caps how often the same dollars can be reused.

Some traders split activity between a cash account and a margin account, others hold more trades overnight so they do not count as day trades, and some trade with funded programs that have their own rules. Each option has its own risks and costs, and none of them is a recommendation. Check the terms carefully and with your broker.

The simplest protection against an unexpected flag is to know your count. A trading journal that imports your broker's CSV execution export shows every round trip by date, which makes the rolling window easy to check. When each trade is precious because you only have three per week, it helps to be selective. A stock scanner with saved filters narrows the morning to the names that fit your plan, and a position size calculator keeps every trade at the same planned risk so one loss does not push your equity under $25,000. If you are new to all of this, our guide to day trading software for beginners covers the basic setup.