Put Credit Spread (Bull Put Spread)
A put credit spread is a highly efficient vertical options strategy that lets you profit from a stock staying flat, rising, or even dropping slightly all with built-in, strictly capped downside protection.
Strategy Overview & Requirements
Essential Knowledge: Ensure you understand Cash Secured Puts before learning Spreads.
What You Need
- Brokerage account with Level 3 (Spread) approval
- Capital equal to the width of the spread × 100
- Understanding of strike deltas and theta decay
Risk Level: Moderate
Unlike naked puts, this strategy carries strictly defined risk. You know your exact maximum loss before you route the order.
Time Commitment
- Initial setup: 20 minutes
- Monitoring: 10-15 minutes/week
- Trade management: 30-45 DTE cycles
How Put Credit Spreads Work
Think of a put credit spread like running an insurance business. You sell a high-premium insurance policy to someone else, but turn around and immediately buy a cheaper, catastrophic policy underneath it to protect your own account from a market crash.
The Mechanics:
- Sell a Short Put: Out-of-the-money; collects the primary premium.
- Buy a Long Put: Further out-of-the-money; caps your max loss and drastically lowers buying power requirements.
- Net Credit: The difference in premium between the two legs is yours to keep as max profit.
Order Entry Warning: On modern brokerages, you must construct the trade as a single multi-leg "Vertical Spread" ticket. Do not enter the legs separately.
Real-World Example: Micron (MU) at $140
Trade Setup:
- Sell the Short Leg: Sell 1 MU Put at the $130 Strike (Collects +$350 premium).
- Buy the Protection Leg: Buy 1 MU Put at the $125 Strike (Pays -$150 premium).
Net Credit & Collateral:
- Net Credit Collected: $200 instantly deposited to your account.
- Width of Spread: $5.00 ($500 gross total risk).
- Capital Held/Collateral: Width ($500) - Credit ($200) = $300 required capital.
| Metric | Cash Secured Put (CSP) | Put Credit Spread |
|---|---|---|
| Capital Required | High (Strike × 100) | Low (Spread Width × 100) |
| Max Risk Profile | Substantial (If stock goes to $0) | Strictly Capped (Width - Credit) |
| Return on Capital (ROC) | Lower percentage basis | Significantly higher percentage basis |
How to Manage and Roll Vertical Spreads
When an underlying stock drops aggressively and breaches your short strike, you have alternative choices beyond taking the maximum loss. You can actively roll the spread down and out to buying cycles further out in time.
When to Adjust:
- When the stock violently tests your short strike price.
- When there are 10-14 days remaining until expiration (avoiding gamma risk).
- If you can execute the transition for a net credit.
Frequently Asked Questions
What is the maximum loss on a put credit spread?
The maximum loss is strictly defined when you open the trade. It is calculated by taking the width of your strike prices, multiplying by 100, and subtracting the initial net credit you received. You cannot lose more than this amount.
Can you close a put credit spread before expiration?
Yes. Experienced options sellers rarely hold spreads all the way to expiration. The best practice is to buy back the spread to close it when it reaches 50% of its maximum profit potential.
Does a bull put spread require margin?
Yes, trading vertical spreads requires a margin account with appropriate options tier approval (usually Level 3). However, because the risk is defined, the buying power reduction is much smaller than trading naked or cash-secured options.
Recap & Practical Checklist
Put Credit Spread Checklist
- Does my account have Level 3 spread permissions active?
- Is the premium collected at least 1/3 of the total width of the spread?
- Have I verified that no corporate earnings reports land within the cycle window?
Mistakes to Avoid
- Concentration Risk: Clustering too many spreads on one single ticker.
- Forcing Premium: Widening spreads beyond your risk boundaries just to force higher premiums.
- Gamma Risk: Letting tested spreads run completely to expiration day.