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After more than two decades, one of US retail trading's most debated margin rules has been replaced.
The US Securities and Exchange Commission (SEC) has granted accelerated approval to a proposed rule change by the Financial Industry Regulatory Authority (FINRA) that eliminates the "Pattern Day Trader" (PDT) designation and its associated $25,000 minimum equity requirement, replacing it with a modern intraday margin framework.
The approval, dated 14 April 2026, marks the end of a regime that has governed US equities day trading since 2001, and which has long been a point of contention among retail traders, broker-dealers, and industry observers alike.
What Is Changing
Under FINRA Rule 4210(f)(8)(B), any customer who executed four or more day trades within five business days, and where those trades represented more than six per cent of their total trading activity, was classified as a "Pattern Day Trader." That classification triggered a minimum equity requirement of $25,000, which had to be maintained at all times in the margin account. Failure to meet the threshold locked traders out of further day trading activity.
The approved rule change removes this designation entirely, along with the associated day-trading buying power provisions and all related minimum equity requirements.
In their place, FINRA has established new intraday margin standards (IML standards) under amended Rule 4210. Broker-dealers will now be required to monitor and manage real-time intraday margin exposure in customer accounts throughout the trading day, applying existing maintenance margin principles to intraday positions rather than relying on a fixed equity threshold.
FINRA
In its filing, FINRA described the shift as addressing:
“current risks of intraday trading exposures, with fewer distorting conditions for customers and more practicable margin standards to be applied by members.”
A de minimis threshold is built into the new framework. Customers will not be considered to be failing their intraday margin obligations where deficits do not exceed the lesser of five per cent of equity in the margin account or $1,000.
Why Now
The $25,000 PDT rule was introduced in 2001 in the aftermath of the dot-com boom, when regulators grew concerned about leveraged retail speculation and the systemic risks it could create. At the time, the rule was designed to ensure traders had sufficient capital to cover intraday losses without destabilising their brokers.
Markets have changed substantially since then. Execution speeds, risk management technology, and real-time portfolio monitoring have all advanced to a point where FINRA argued the 2001 framework no longer reflected how modern trading firms and platforms actually operate. The regulator began a formal review process, inviting public comment on the effectiveness and efficiency of the existing day-trading requirements, including account approvals, risk disclosures, and margin rules, before bringing the amended rule to the SEC.
What It Means For Brokers And Traders
For retail traders in the United States, the change is significant. The $25,000 threshold has historically acted as a barrier to entry for lower-capitalised individuals who wished to engage in active intraday trading without routing through offshore or non-US platforms. The removal of the fixed equity requirement does not, however, eliminate margin requirements altogether. Traders will still be subject to intraday margin calculations, and broker-dealers will be expected to enforce these actively throughout the trading session.
For broker-dealers and trading platforms, the change places a greater operational burden on real-time risk management infrastructure. Firms will need to monitor intraday margin levels continuously and take action to address deficits promptly. This will likely accelerate demand for more sophisticated risk and margin management technology across the brokerage sector.
For the institutional FX, prime brokerage, and trading technology communities, the rule change signals a broader regulatory shift: from prescriptive, one-size-fits-all thresholds towards dynamic, risk-calibrated frameworks that reflect actual market conditions in real time.
Implementation
The rule filing reference is SR-FINRA-2025-017, released under SEC Release No. 34-105226. Implementation timelines will follow FINRA's standard process for approved rule changes. Broker-dealers should monitor FINRA's guidance for specific compliance deadlines and operational requirements.
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