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Bull Put Credit Spread Calculator

By the OptionProfit Editorial Team · Updated June 2026 · 2 min read · Risk disclaimer

A bull put credit spread sells a put and buys a lower-strike put for protection, collecting a net credit. It profits if the stock stays above the short strike — a high-probability income trade.

Open the Bull Put Credit Spread calculator →

Key characteristics

When to use a bull put credit spread

Use it when you are neutral-to-bullish and want to be paid for the stock simply staying above a level. You sell a put and buy a lower-strike put for protection, collecting a net credit you keep if the stock holds.

It shines when implied volatility is elevated (richer credit) and you can pick a short strike below support, giving the trade a high probability of profit.

Risks and management

Maximum profit is the credit; maximum loss is the strike width minus the credit, reached if the stock falls below the long strike. The reward is smaller than the risk, so the high hit-rate must hold up over time.

Many sellers close at around 50% of max profit, and defend a tested spread by rolling it down and out for additional credit rather than letting it run to expiration.

Worked example. Stock at $100 with elevated IV. You sell the $95 put and buy the $90 put for a $1.20 credit ($120). Max profit is $120 (above $95); max loss is the $5 width minus $1.20 = $380 (below $90); breakeven is $93.80.

Calculate it live

Use the free OptionProfit Bull Put Credit Spread calculator to load a live option chain, build the trade, and instantly see the payoff chart, breakevens, probability of profit, Greeks and a Monte Carlo simulation of outcomes.

Key takeaways

Frequently asked questions

What is the maximum I can lose?

The strike width minus the credit received — the long put caps your risk, so there are no open-ended losses.

Why is the potential loss bigger than the gain?

That is typical of high-probability credit spreads: you trade a larger risk for a high chance of a small win, so risk management matters.

When should I close it?

Many traders take profit around 50% of the maximum credit, or roll the spread down and out if the stock threatens the short strike.

Related guides:
Credit vs Debit SpreadsProbability of Profit & Expected MoveTheta Decay & Selling Premium
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