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Cash-Secured Put Calculator

See how much cash a put ties up, what it pays, and what you would really pay for the stock if you are assigned.

Your numbers

Results

Cash to set aside
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Premium collected
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Return on cashif not assigned
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Annualized
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Effective price if assignedstrike minus premium
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Discount to today's price
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Strike below today's price
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For education only, not financial advice. Figures exclude commissions, fees and taxes. Nothing you enter leaves your browser.

How it works

Selling a cash-secured put pays you a premium now. In exchange, you agree to buy 100 shares per contract at the strike if the stock is below it at expiration, with the cash set aside in advance.

If you are assigned, the premium lowers your cost: effective price = strike − premium. If the stock falls far below that, you own it at a loss, the same as any buyer.

Go deeper

Which stocks to sell puts on, how far below the price to go, and what to do once you own the shares? Assigned covers the strategy end to end, and Harvested runs it for retirement income.