Original comparison · Reviewed 28 August 2026
Bull put spreads and bear call spreads collect income for a directional forecast that doesn't even need to be right — only not badly wrong.
Both are credit vertical spreads: you receive premium upfront, and profit if the underlying finishes anywhere on the favorable side of the short strike, not just if it moves the way you predicted.
Bull put spread: structure
Sell a put at a higher strike, buy a put at a lower strike, same expiration. The premium paid for the long put partially offsets the premium received from the short put.
Example: Stock at $100. Sell the $95 put for $3, buy the $90 put for $1. Net credit: $2.00.
- Breakeven = short strike − net credit = $95 − $2 = $93
- Max profit = net credit ($2.00), achieved at or above $95
- Max loss = strike width − net credit = $5 − $2 = $3.00, if the stock finishes at or below $90
Bear call spread: structure
Sell a call at a lower strike, buy a call at a higher strike, same expiration. The premium paid for the long call partially offsets the premium received from the short call.
Example: Same $100 stock. Sell the $105 call for $3, buy the $110 call for $1. Net credit: $2.00 — identical structure, mirrored.
- Breakeven = short strike + net credit = $105 + $2 = $107
- Max profit = net credit ($2.00), achieved at or below $105
- Max loss = strike width − net credit = $5 − $2 = $3.00, if the stock finishes at or above $110
Credit spreads don't need to be right, just not wrong
The defining feature of both strategies: max profit is achieved across a whole range, not at one price. The bull put spread above earns its full $2.00 credit anywhere at or above $95 — the stock can fall, stay flat, or rise, and the trade still wins, as long as it doesn't fall below $95. This is the opposite of a debit spread (bull call, bear put), which needs the underlying to actually move in the predicted direction to profit.
Why sell a spread instead of a naked put or call
A naked short put or naked short call collects more premium than the spread version, because there's no long leg eating into the credit. But a naked short put carries risk down to zero on the stock, and a naked short call carries theoretically unlimited risk on the upside. Buying the further-out option caps that risk at a known, fixed amount — the trade-off is a smaller credit in exchange for defined, bounded loss and (usually) lower margin requirements.
Time decay works for you
Both credit spreads have positive theta: all else equal, the position gains value each day the underlying stays on the favorable side of the short strike, because the options sold lose time value faster than the options bought (the short leg is closer to the money and decays faster in dollar terms). This is the inverse of debit spreads, where time decay works against the position from day one.
Implied volatility considerations
Selling spreads when implied volatility is elevated collects a richer credit relative to the strike width, improving the reward-to-risk ratio — this is why credit spreads are commonly favored in higher-IV environments (for example, after a volatility spike) while debit spreads are more often favored when IV is low and options are cheap to buy outright.
How to choose
- Pick the bull put spread when you expect the underlying to hold above a support level — it doesn't need to rally, just avoid falling through that level.
- Pick the bear call spread when you expect the underlying to stay below a resistance level.
- Both are a natural pairing: selling a bull put spread below the market and a bear call spread above it simultaneously produces an iron condor — see the iron condor calculator for that combined structure.
Disclaimer: This comparison is educational only and does not constitute investment or options-trading advice. Multi-leg spreads carry execution and assignment risk that varies by broker and market conditions. Consult a qualified financial advisor before trading options.