Form calculator · Risk

Option Margin

Estimate premiums, initial margins, variation margins, and return on margin for written calls and puts.

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Explore a margin scenario.

Change the contract, market, and risk assumptions to update call and put estimates immediately.

Broker and exchange methodologies vary. Treat this as an exploratory estimate and confirm actual requirements independently.

Compare simple and detailed Black–Scholes forms or use the dedicated RPN calculator flavor.