A bull put spread is a credit spread strategy that profits when the underlying stock stays flat or moves higher. You sell a put at a higher strike price and buy a put at a lower strike price, both expiring on the same date. Because you collect more premium on the short put than you pay for the long put, you enter the trade at a net credit. That credit is your maximum profit.

The long put you buy limits your downside. No matter how far the stock falls, your loss is capped at the spread width minus the credit received. That defined risk is what separates a bull put spread from selling a naked put. Before placing a trade, run your specific strikes and premiums through a bull put spread calculator to confirm your max profit, max loss, and breakeven before you commit.

How a bull put spread works

To set up a bull put spread, you select two put options with the same expiration date:

• Sell one put at a higher strike price (the short put)
• Buy one put at a lower strike price (the long put)

The premium you collect for the short put is greater than the premium you pay for the long put. The difference is your net credit, which lands in your account when you open the position. That credit is also the most you can make on the trade.

The long put is your hedge. If the stock falls sharply, the long put gains value and offsets most of the short put’s loss. Your total exposure is bounded, which makes the bull put spread a far more conservative position than an uncovered short put.

Bull put spread payoff: max profit, max loss, and breakeven

Three numbers define the risk profile of every bull put spread:

• Max profit = net credit received per share x 100. You keep the full credit when both puts expire worthless, which happens when the underlying closes at or above the short put strike at expiration.
• Max loss = (spread width minus net credit received) x 100. This is the worst-case outcome when the stock closes at or below the long put strike at expiration and both options are fully in the money.
• Breakeven = short put strike minus net credit received. The underlying must stay above this price for the trade to be profitable at expiration.

The option spread calculator can map the full payoff curve for any vertical spread configuration if you want to visualize intermediate outcomes between max profit and max loss.

Step-by-step example

Suppose XYZ stock is trading at $105 and you expect it to stay above $100 through expiration. You set up the following bull put spread:

• Sell the $100 put for $2.50
• Buy the $95 put for $0.90
• Net credit: $1.60 per share ($160 per contract)

Your outcomes at expiration:

• XYZ closes at $105 or above: both puts expire worthless, you keep the full $160 credit.
• XYZ closes at $98.40 (breakeven): the $100 put is worth $1.60, and the $95 put expires worthless. Your short put loss equals your credit, netting to zero.
• XYZ closes at $95 or below: the spread is at full width. Max loss = ($5.00 width minus $1.60 credit) x 100 = $340 per contract.

This defined-risk profile is why bull put spreads are popular for income generation in neutral-to-bullish markets. You know before you open the trade exactly how much you can make and exactly how much you can lose.

When to use a bull put spread

The bull put spread performs best under specific market conditions:

• Neutral to moderately bullish outlook: you expect the stock to hold above a support level but do not need a strong rally to profit. The trade makes money as long as the stock stays above your breakeven.
• High implied volatility: higher IV inflates the premium on the short put, which increases the credit you collect. Selling credit spreads in elevated volatility environments gives you a larger margin of safety.
• Earnings plays with a bullish lean: if you expect a company to meet or beat estimates, a bull put spread lets you collect premium while defining your downside ahead of the binary event.
• Income generation on stable holdings: traders who own or watch stable blue-chip stocks often sell bull put spreads repeatedly against a support level to collect steady premium income.

Bull put spread vs bear call spread

Both are credit spreads with defined risk, but they express opposite directional views. A bull put spread is a put credit spread you sell when you are neutral to bullish. A bear call spread is a call credit spread you sell when you are neutral to bearish. The mechanics are mirror images: bull put spread profits when the stock stays above your short put strike; bear call spread profits when the stock stays below your short call strike.

When you sell both a bull put spread and a bear call spread on the same underlying and expiration, you create an iron condor. That four-leg position profits when the stock stays range-bound between both breakeven points. Check the iron condor calculator if you want to combine these credit spreads into a single position.

Managing a bull put spread before expiration

Many active traders do not hold credit spreads to expiration. Common management rules for bull put spreads include:

• Take profit at 50% of max credit: closing when the spread has decayed to half its opening value locks in gains quickly and removes the risk of a late reversal.
• Cut losses at 2x the credit received: if the spread has moved against you and the mark-to-market loss reaches twice the opening credit, closing early prevents turning a manageable loss into a max loss.
• Roll down and out (close the current spread and reopen it at lower strikes and a later expiration): if the stock is approaching your short put strike, this adjustment gives the position more room and time. This is not always the right move, but it is worth considering when you still believe the underlying is fundamentally sound.

For a deeper look at how the bear call spread works as a directional counterpart, see the guide to bear call spread options strategy. Both strategies belong to the same family of defined-risk credit trades.