Securities Industry Essentials (SIE) ExamUnderstanding Trading, Customer Accounts, and Prohibited ActivitiesMedium

A client has a margin account with a market value of $40,000 and a debit balance of $15,000. If the Regulation T initial margin requirement is 50%, what is the client's current excess equity?

  1. A$15,000
  2. B$10,000
  3. C$20,000
  4. D$5,000
Show answer & explanation

Correct answer: D. $5,000

To calculate excess equity, first determine the Regulation T requirement (50% of $40,000 = $20,000). Then, calculate the actual equity ($40,000 market value - $15,000 debit balance = $25,000). Excess equity is the actual equity minus the Regulation T requirement ($25,000 - $20,000 = $5,000).

Why the other options are wrong

  • A. This is the debit balance, not the excess equity.
  • B. This represents the full Regulation T requirement for the market value, not the excess equity.
  • C. This is the market value, not the excess equity.

Excess Equity (Margin Account)

The amount of equity in a margin account that exceeds the Regulation T margin requirement.

  • Calculated as Actual Equity - Regulation T Requirement.
  • Can be withdrawn by the customer or used to purchase additional securities.
  • Increases when market value rises or debit balance decreases.

Memory trick: Equity is King, but Excess is the Crown Jewel.

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