Cash-Secured Put Calculator
Selling a cash-secured put creates an obligation to buy shares at the strike if assigned. For a standard contract, plan for strike price times 100 in cash. The premium provides a limited cushion, not protection against a large stock decline.
Compare available puts across selected expirations using the same calculations as the main Analyzer. Higher annualized premium is not automatically a better trade: this ranking does not account for all risks or identify a suitable investment.
Try the cash-secured put calculator
Enter a stock ticker to compare delayed put quotes. Cash-Secured Put is selected by default.
Type a ticker below to compare delayed option quotes across selected expirations.
Save up to 5 stocks for quick access. Saved in this browser · No login needed.
Enter a stock and see every put or covered call on one map — how much you earn, on how much committed, for how long.
Annualized returns are theoretical estimates based on the displayed option premium and DTE. They assume the premium can be repeatedly earned at the same rate and do not account for assignment, price movement, volatility changes, transaction costs, taxes, slippage, or early exercise.
Quotes are delayed and may be older outside market hours. Retrieval time is not the market quote timestamp. Estimated premiums are not guaranteed fills; annualized figures are theoretical, exclude fees and taxes, and are not risk-adjusted rankings.
How this calculator measures returns
Capital required is strike price times 100. Premium return is premium per share divided by strike, without subtracting premium from that denominator. A $50 put sold for $2 has $5,000 of strike collateral, $200 estimated premium, a 4% premium return and a $48 expiration breakeven before costs.
For OTM/ATM puts, headline annualized return is premium return times 365 divided by days to expiration. For ITM puts, the headline instead uses the net if-assigned return at the quoted underlying price, offsetting premium by the stock loss from buying above market. These are scenarios, not forecasts.
Understanding the assignment zone
If assigned, you pay the strike for the shares; strike minus premium describes an effective entry price before costs, not the cash paid at assignment. The shares may already be worth much less. Being willing to own a company does not remove its downside risk.
Delta measures option-price sensitivity and is sometimes used as a rough model-based probability proxy. It is not a measured probability of assignment. American-style options can be assigned before expiration; moving below the strike does not guarantee immediate assignment.
Closing early, rolling and cash requirements
A premium-capture target such as 50% is a monitoring preference, not proof that early closing outperforms holding. Buying back the put involves a quoted ask, transaction costs and the remaining obligation. A loss may be substantial.
Rolling closes the old contract and opens another. It can realize a loss, extend exposure and require a debit. Broker buying-power treatment varies; this calculator consistently uses full strike collateral rather than asserting your broker's requirement.
Further reading
See the Options Industry Council educational overview for strategy mechanics and risks. Calculator formulas above describe this app's conventions, not personalized advice.