How to Use the Cash-Secured Put Calculator

1. Enter the stock price, put strike and premium. 2. Enter days to expiration. 3. Read the results: maximum profit (the premium), cash required (strike × 100 per contract), break-even (strike − premium) and annualized return.

Remember that the real risk is the stock falling well below the strike: you would buy shares at the strike price. Only sell puts on stocks you are prepared to own at that price.

Results are educational estimates from standard formulas, not investment advice. Live prices, fees and your broker's rules can change the outcome.