Bull Call Spread at a glance
| Construction | Buy 1 at the money call and sell 1 call two strikes above the money, both in the front month expiration. |
|---|---|
| Outlook | Bullish |
| Volatility view | IV neutral |
| Max profit | Higher strike minus lower strike minus net debit, times 100. |
| Max loss | Net debit paid times 100. |
| Breakeven | Lower strike plus net debit per share. |
| Experience level | Beginner |
| Also called | Long call spread, Call debit spread |
How a bull call spread works
The long call gives you upside exposure, and the short call sells off the part of that upside you do not expect to need. The premium from the short call reduces your net debit, which lowers both the breakeven and the dollar risk compared with buying the call alone. In exchange, any gain above the higher strike belongs to the buyer of your short call. You pay the net debit up front, and that debit is the most you can lose.
At expiration the payoff has three zones. Below the lower strike both calls expire worthless and you lose the debit. Between the strikes the long call gains intrinsic value and the position rises one for one with the stock. Above the higher strike both calls are in the money, their gains offset, and profit is flat at its maximum: the width between the strikes minus the debit. The breakeven sits at the lower strike plus the debit.
Before expiration the spread moves more slowly than a single call, because the short call offsets part of every move. With the stock near the long strike, as at entry, the trade is slightly long volatility and loses a little to time decay. Once the stock climbs toward the short strike the effects flip: time decay helps and rising volatility hurts, because the short call now holds more of the extrinsic value. That is why spreads often reach full value only close to expiration.
Bull Call Spread example with real numbers
With the stock at $100, implied volatility at 30%, a 4.1% risk free rate and no dividend, you would buy 1 100 call (32 days) at $3.73, sell 1 105 call (32 days) at $1.78. That is a net debit of $195. At expiration a maximum profit of $305 and a maximum loss of $195, with a breakeven at $101.95. The lognormal chance of profit is 41%.
These are theoretical American option prices from the Bjerksund and Stensland model, not live quotes. Load any ticker in the bull call spread calculator above to run the same math on real market prices.
When to use a bull call spread
- You expect a moderate rise in the stock to around the higher strike by expiration.
- Implied volatility makes a single long call expensive and you want the short call to offset that cost.
- You want defined risk and a lower breakeven than a long call offers.
- You have a price target and are willing to give up gains beyond it.
Max profit, max loss and breakeven
Maximum profit
Higher strike minus lower strike minus net debit, times 100. You earn it when the stock closes at or above the higher strike at expiration.
Maximum loss
Net debit paid times 100. This occurs if the stock closes at or below the lower strike at expiration, when both calls expire worthless.
Breakeven
Lower strike plus net debit per share. The stock must close above this price at expiration for the spread to profit.
Bull Call Spread Greeks
- Delta: Delta is positive and smaller than a single long call, since the short call's delta is subtracted. It is largest when the stock sits between the strikes.
- Gamma: Gamma is positive when the stock is near the long strike and negative near the short strike, so your exposure changes character as the stock climbs.
- Theta: Theta is mildly negative at entry with the stock near the long strike. It turns positive as the stock rises toward or above the short strike.
- Vega: Vega is small: positive near the long strike and negative near the short strike, so volatility shifts matter far less than for a single call.
See the live numbers for your position in the Greeks tab of the calculator, or explore a single option in the options Greeks calculator.
Early exercise and assignment risk
The short call can be assigned early, most often on the day before an ex dividend date when it is in the money and the dividend exceeds its remaining time value. If assigned, you are short 100 shares per contract and, if still short on the ex date, you owe the dividend. Your long call covers the risk: exercise it to buy shares at the lower strike and deliver them, which realizes the full width of the spread. The dividend owed can push the result below the calculator's theoretical maximum profit.
When both legs are deep in the money ahead of an ex dividend date, closing the whole spread is usually simpler than waiting to see whether you are assigned. Pin risk is the other American style issue. If the stock closes near the short strike at expiration, your long call is exercised automatically, but you may or may not be assigned on the short call. That can leave you unexpectedly long 100 shares per contract over a weekend. Closing the spread before the final session avoids the problem.
The calculator's Early exercise risk tab flags short legs that are likely to be assigned. For a single option, use the early exercise calculator or read how early exercise and assignment work.
Pros and cons
Pros
- Risk and reward are both defined at entry.
- Lower cost and lower breakeven than buying a call outright.
- Less sensitive to time decay and volatility than a single long call.
- Available at a basic spread approval level in most accounts.
Cons
- Profit is capped at the width between strikes minus the debit.
- Often needs the stock to rise and stay up until near expiration to reach full value.
- Two legs mean two bid ask spreads to cross when opening and closing.
- Early assignment of the short call around dividends can create short stock and a dividend charge.
How to manage a bull call spread
- Place the long strike near the current price and the short strike near your price target, as the calculator does by default.
- Close the spread once most of its maximum value is captured rather than waiting for the last few cents.
- If the stock stalls below the long strike, consider closing early before time decay erodes more of the debit.
- Close or roll before an ex dividend date if the short call is in the money with little time value.
Bull Call Spread FAQ
Bull call spread vs long call: what is the difference?
A bull call spread costs less than a long call and has a lower breakeven, but it caps your profit at the higher strike. A long call keeps unlimited upside and carries more exposure to time decay and volatility. The spread suits a moderate rally to a target, while the single call suits a larger move.
What is the max profit on a bull call spread?
The max profit on a bull call spread is the higher strike minus the lower strike minus the net debit, times 100. You receive it when the stock closes at or above the higher strike at expiration. Before expiration the spread usually trades below that value because the short call still holds time value.
Can a bull call spread be assigned early?
Yes, the short call in a bull call spread can be assigned early, most often on the day before an ex dividend date. If that happens, you can exercise your long call to deliver the shares and realize the spread's full width. Any dividend owed while you are short reduces the profit.
Bull call spread vs bull put spread: how do they compare?
A bull call spread is a debit spread and a bull put spread is a credit spread, and with identical strikes their expiration payoffs are nearly the same. As the calculator builds them, the call spread starts at the money and needs a rally to profit, while the put spread sells an out of the money put and profits if the stock simply stays above it. The credit spread earns time decay from the start, while the debit spread pays it at first.
Related strategies
Long Call
A long call is the purchase of a single call option, which gives you the right to buy 100 shares at the strike price on or before expiration.
Bull Put Spread
A bull put spread is a two leg credit spread that sells a put and buys a lower strike put in the same expiration.
Bear Put Spread
A bear put spread is a two leg debit spread that buys a put and sells a lower strike put in the same expiration.
Call Diagonal Spread
A call diagonal spread buys a longer dated call and sells a shorter dated call at a higher strike, and it profits most if the stock rises toward the short strike by front month expiration.
Educational tool, not financial advice. Calculations are theoretical and depend on your inputs; real fills, fees, early assignment and dividends can change results. Options involve risk and are not suitable for every investor.