How much cash do I need for a cash-secured put?

Cash required = strike price x 100 x number of contracts. For one $45 put, you need $4,500 in reserved collateral. Your broker reserves this amount; if assigned, you buy the shares at the strike.

Can I use margin for cash-secured puts?

Cash-secured means no margin—you must have the full amount in cash. Using margin changes the strategy (naked or margin-backed put) and has different capital requirements.

Does option premium reduce the cash required?

The broker usually reserves strike x 100 x contracts for a fully cash-secured put. Premium collected can reduce your effective breakeven and adjusted basis, but you should still plan around the full assignment amount.

Where can I find cash-secured puts to calculate?

Use the Wheel Strategy Options cash-secured put screener to shortlist puts by yield, delta, DTE, and liquidity, then use this calculator to confirm the collateral needed before trading.

CSP Calculator — Cash Secured Put Collateral

This CSP calculator shows cash required for a cash-secured put: strike × 100 × contracts. Enter strike and size to see collateral and portfolio allocation before selling the put.

Need trade ideas first? Use the cash-secured put screener to filter by yield, delta, DTE, and liquidity, then bring the strike here to check the cash required.

Strike price

Number of contracts

Portfolio size (optional)

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