Portfolio Margin and Reg T Margin are two distinct types of margin accounts offered by Interactive Brokers (IBKR), each with its own features, requirements, and calculations. Understanding these differences is crucial for traders to choose the most suitable option for their trading strategy and account balance.
Margin Calculation Method
- Reg T Margin: Uses a rule-based system with fixed percentages for predefined strategies set by the Federal Reserve Board.
- Portfolio Margin: Employs a risk-based pricing model that calculates margin requirements based on the overall risk of the portfolio.
Margin Requirements
- Reg T Margin:
- Fixed requirements: 25% for intraday trading (4:1 leverage) and 50% for overnight positions (2:1 leverage),IBKR House margin may exceed any Regulatory minimum
- Standard margin rules apply
- IBKR may apply House Risk Based margin or IBKR Concentrated margin to positions in a Reg T margin account
- Portfolio Margin:
- Margin rates starting at 15%
- No differentiation between securities intraday and overnight positions as Reg T Overnight margin does not apply to a Portfolio Margin account (Note: Futures held in any margin account still can have Intraday and Overnight margins)
- May offer lower margin requirements for certain positions, potentially allowing for more efficient use of capital
- Can provide more flexibility in margin calculations for complex options strategies
Account Minimum Requirements
- Reg T Margin: Requires a minimum of USD 2,000 (or non-USD equivalent) for IBLLC, EUR 2,000 for IBIE, AUD 2,000 for IBA, SGD 2,000 for IBSG, and INR 2,500 for IBIN to place a trade
- Portfolio Margin: Requires a minimum of USD 110,000 equity to apply, and must maintain above USD 100,000
Leverage and Risks
- Reg T Margin: Offers standard leverage
- Portfolio Margin: May allow for increased leverage in certain cases, which can be advantageous but also carries additional risks
Special Features
- Reg T Margin: Includes a Special Memorandum Account (SMA) that is used to calculate a limit to the size of the Overnight position under Reg T rules
- Portfolio Margin: No SMA; uses Equity with Loan Value (ELV) less total Initial Margin requirements to determine the ability to open new positions
Options Trading
- Reg T Margin: Uses Formula based margin as described on IBKR's Option Margin page that may include IBKR House margins (Note: IBKR reconfigures the open option positions each time an option is opened or closed so at times IBKR may reconfigure into Universal spreads that do offer offsets or remove a rules based offset when a 2 option vertical is traded in a Reg T account)
- Portfolio Margin: Allows offset for long options positions, which can be beneficial for options traders that want to increase leverage but also may increase potential risk
To compare the margin requirements for both types in TWS (Trader Workstation)
- Use the Risk Navigator "What If" feature
- In the Margin type menu, view both Reg T and PM options
- For Reg T, select STKMRGN
- For Portfolio Margin, select PMNRGN
Alternatively, you can use the "Try portfolio margin" function in the TWS account window to preview the overall account change in Excess Liquidity.
To apply for Portfolio Margin
- Log in to Client Portal
- Click the User menu (head and shoulders icon in the top right corner) followed by Settings
- Under Account Settings find the Account Configuration section
- Click Account Type to request an upgrade to "Portfolio Margin".
It is important to note that Portfolio Margin accounts may carry additional risks due to their more complex nature and potentially higher leverage. Traders should thoroughly understand the implications before switching to a Portfolio Margin account.
Additional Information