Use this calculator to estimate return from selling a cash-secured put. Enter the
strike, premium, shares (typically 100), and expiration. We compute:
- Total premium income (credit × shares)
- Conservative cash required (strike × shares)
- ROI and annualized APR (based on conservative cash)
- Break-even stock price and downside protection %
- Float earnings by compounding collected premium through expiry
- Return on Net Capital Invested: Total % and CAGR %
Note: Some brokers offset cash by the credit; we show that amount for reference.