Rolling Decision Calculator

Your current short put

The roll you are considering

Results

Roll net credit / debit
New breakeven
New total premium collected
Strike change
Gap to safety (stock vs new strike)
Cash to secure new puts
New days to expiration
Annualized return (this roll)
Carry-forward number: your net premium collected to date is now . Record it — the tool has no login, so you re-enter this figure as "net premium collected to date" the next time you roll.

Probability of profit

A model estimate for the repaired position at the new expiration, from the implied volatility above (a lognormal price model) — not a prediction. It assumes you hold to expiration and ignores volatility skew, early assignment and dividends. Real outcomes will differ.

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