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Current Initial Margin

Trading Term

Initial Margin: The upfront deposit or equity required to initiate a trade on margin.

Current: It reflects real-time conditions, including:

  • The value of your current holdings
  • Market volatility
  • Broker’s real-time margin calculations

This is the minimum portion of a new security purchase that an investor must pay for in cash. For U.S. stocks, this is defined by Reg. T and is currently 50% (Reg. T Initial Margin).

Since IBKR calculates margin on a real-time basis and Reg. T is enforced at the end of the day, IBKR performs an initial margin requirement check at the point of trade, albeit at a rate generally less than 50% (IBKR Initial Margin).

Initial Margin may be a component used in various calculations, such as Available Funds.

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