Stock Margin Trading Regulations
Regulation T (Reg T)
Set by the Federal Reserve Board, Reg T governs the initial margin requirements for stock purchases:- Initial margin: 50% of the purchase price
- Meaning: You can borrow up to 50% of a stock's value (2x leverage)
- Applies to: All US broker-dealers
FINRA Maintenance Margin
FINRA requires:- Minimum maintenance margin: 25% of market value
- Brokers can set higher requirements (many require 30-40%)
- Falling below triggers a margin call
Pattern Day Trader (PDT) Rule
If you execute 4+ day trades in 5 business days in a margin account:- You're classified as a Pattern Day Trader
- Must maintain $25,000 minimum equity
- Applies to margin accounts only
- Workaround: Use a cash account (no leverage) or trade with multiple brokers
Portfolio Margin
For accounts with $110,000+:- Risk-based margin calculation
- Potential for up to 6.7x leverage on diversified portfolios
- Must apply and be approved
- Available at Interactive Brokers, TD Ameritrade, Schwab
Crypto Margin Trading Regulations
Current Status (2026)
- Spot crypto margin: Largely unregulated for pure crypto-to-crypto
- Crypto derivatives: Regulated by CFTC (Commodity Futures Trading Commission)
- Offshore exchanges: Not licensed to serve US customers (Binance, Bybit, OKX)
- Regulated options: Kraken, Coinbase, and dYdX offer various options for US traders
Available Platforms for US Crypto Margin Traders
Why Most Crypto Exchanges Block US Users
- Offering unregistered securities (some tokens)
- Operating as unregistered futures exchanges
- Lack of required US licenses
- Risk of SEC/CFTC enforcement
Forex Margin Trading Regulations
NFA/CFTC Rules
- Maximum leverage: 50:1 for major pairs, 20:1 for minors
- No hedging: Cannot hold both long and short on the same pair
- FIFO rule: Must close oldest positions first
- Registered dealers only: Must trade with NFA-registered forex dealers
Licensed US Forex Brokers
- OANDA, Forex.com, Interactive Brokers, IG (US division)
Key Compliance Tips for US Traders
The Future of US Margin Trading Regulation
The regulatory landscape is evolving, especially for crypto:
- SEC and CFTC continue to clarify jurisdiction over crypto assets
- New legislation may provide clearer frameworks for crypto margin trading
- More exchanges are seeking US regulatory approval
- Decentralized exchanges present new regulatory challenges