Derivatives

Margin Call Calculator

Enter the purchase price and your initial and maintenance margins to find the margin call price.

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Price & margins

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Enter the purchase price and margins to see the margin call price.

Worked example

With these example inputs:

  • Purchase price$100
  • Initial margin50%
  • Maintenance margin30%

Margin call price: $71.43

  • Price decline to call$28.57

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Frequently asked questions

How is the margin call price calculated?

Multiply the purchase price by one minus the initial margin, divided by one minus the maintenance margin. Buying at $100 with 50% initial and 30% maintenance gives a call price of about $71.43.

What happens at a margin call?

Once the price falls to this level, the broker asks you to add funds or sell to restore the maintenance margin. Failing to act can lead to a forced sale of the position.