A credit spread is one of the cleanest ways to enter options selling. You collect premium upfront — just like a naked put — but your maximum possible loss is locked in from the moment you place the trade. No surprise margin calls. No "what if the stock goes to zero" scenarios keeping you up at night.
For beginners, that defined risk isn't just a psychological comfort — it's a practical advantage that lets you trade more consistently and size positions without second-guessing yourself.
What is a credit spread?
A credit spread involves selling one option and simultaneously buying another option on the same stock, same expiration, but at a different strike price. The option you sell brings in more premium than the one you buy costs — so you net a credit. That credit is yours to keep if the trade works out.
The most common type for bearish-to-neutral setups is the bull put spread (also called a put credit spread). You sell a put at a higher short strike, buy a put at a lower strike, and collect the difference as premium.
A bull put spread profits when the stock stays above your short strike at expiration. You're not betting the stock will go up — just that it won't fall significantly. That's a much easier bar to clear than directional trading.
How the trade works, step by step
Let's say stock XYZ is trading at $60. You think it's stable or headed slightly higher, and you want to collect some premium. Here's a typical bull put spread:
- Sell the $55 put — collect $1.50 in premium
- Buy the $50 put — pay $0.60 in premium
- Net credit received: $0.90 per share ($90 per contract, since 1 contract = 100 shares)
At expiration, one of two things happens:
- XYZ is above $55 — both puts expire worthless, you keep the full $90. Trade over, rinse and repeat.
- XYZ is below $50 — you lose the maximum amount: the width of the spread ($5.00) minus your credit ($0.90) = $4.10 per share, or $410 per contract.
- XYZ is between $50 and $55 — partial profit or partial loss depending on exactly where it lands.
Max profit, max loss, and breakeven
The breakeven is simply your short strike minus the credit received: $55.00 − $0.90 = $54.10. As long as XYZ stays above $54.10 at expiration, you're profitable to some degree.
Notice that the max risk ($410) is significantly larger than the max reward ($90). That ratio is the trade-off for having defined, capped risk. It's not a flaw — it's the deal. The win rate on well-selected credit spreads tends to be high enough that the math works in your favor over time, but you need to be disciplined about not letting losers run to max loss when you can close them early for less.
Most experienced spread traders set a rule to close losers at 2× the premium received — so if you collected $90, close the spread if it's worth $180 against you. This keeps max losses off the table and preserves capital for future trades.
Credit spreads vs. naked puts — which is better?
Both strategies collect premium and profit when the stock stays above your strike. The difference is risk profile and capital requirements.
- Naked put: Higher premium collected, but unlimited downside to zero. Requires significant margin. Getting assigned means buying 100 shares — which you need capital to absorb.
- Bull put spread: Lower premium collected, but loss is capped at the spread width. Lower margin requirement. No assignment risk on the short leg if you also hold the long put.
For smaller accounts — say, under $10,000 — credit spreads often make more sense because you can take multiple positions without concentrating all your capital in one potential assignment. For larger accounts where you're comfortable owning shares, naked puts (especially as part of the wheel strategy) can generate more income per trade.
Don't confuse "defined risk" with "low risk." A credit spread can still lose 4–5× what it earns if it goes against you and you hold to expiration. Defined risk means you know the number in advance — it doesn't mean it's a small number.
Entry rules for beginners
The same core rules from the wheel strategy apply here — you're still selling puts, just with protection underneath:
- Delta on the short leg: ~0.15–0.20. This puts your short strike meaningfully below the current price and gives you a solid probability of expiring worthless.
- RSI below 45–55 on entry. Don't sell premium into an overbought stock. Wait for a pullback or neutral momentum before entering.
- Spread width: $2–$5 wide depending on the stock's price and your account size. Wider spreads offer more premium but higher max loss.
- 7–21 days to expiration. Shorter expirations mean faster theta decay — but less time for the trade to recover if it moves against you early.
- Avoid earnings. IV spikes into earnings and collapses after — but the move itself can easily blow through your strikes. Skip earnings weeks.
Managing the trade
Credit spreads don't need constant babysitting, but they do need a plan before you enter:
- Profit target: Close at 50% of max profit. If you collected $90, close when you can buy it back for $45. This frees up capital and removes risk from the table — the remaining $45 isn't worth holding for.
- Loss limit: Close at 2× premium received. If your $90 credit is now costing $180 to close, exit. Don't hold hoping for a miracle.
- Rolling: If the stock is drifting toward your short strike with time still remaining, you can roll the spread down and out — close the current position and open a new one at lower strikes and a further expiration. Only do this if the trade thesis still makes sense.
Credit spreads are one of the best starting points for new options sellers. The risk is defined before you enter, the mechanics are straightforward, and the same discipline that makes wheel trading work — patience, stock selection, RSI timing — applies directly here.
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