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Cash Secured Put Calculator

Estimate cash collateral, option premium, effective purchase cost, and modeled results if you sell a cash secured put.

Put strike price ($)

Premium per share ($)

Contracts sold

Stock price at expiration ($)

Cash collateral required

Premium received

Effective purchase price per share

Maximum theoretical loss

Modeled P/L at expiration

Shares purchased if assigned

Uses the standard 100 share equity option multiplier. Assumes an unhedged short put held until expiration, premium retained, and no fees, taxes, interest, slippage or margin effects. Assignment can occur early. At expiration, assignment is modeled when the put is in the money. Actual outcomes can differ. Losses can be substantial. Educational use only.