Ratio Call Spread Calculator

Butterflies & RatiosbullishUndefined Risk

Buy one call and sell multiple higher-strike calls for a bullish trade with upside risk.

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What Is a Ratio Call Spread?

A ratio call spread buys one call at a lower strike and sells two or more calls at a higher strike in the same expiration. The most common version is the 1 by 2, where one long call is paired with two short calls. Because there are more short calls than long calls, the trade collects extra premium relative to a standard bull call spread, and it is often opened for a small debit, at even money, or for a small credit.

The position behaves like a bull call spread with a short call attached. Up to the short strike it gains as the stock rises, and the maximum profit occurs when the stock closes exactly at the short strike, where the long call has its full spread value and both short calls expire worthless. Above the short strike, one short call is covered by the long call while the second short call is naked, so the position gives back profit dollar for dollar and eventually moves into a loss that has no upper limit.

The payoff diagram is a tent with a small flat region on the downside, a peak at the short strike, and a downward slope on the upside that continues indefinitely. This makes it a moderately bullish strategy with a specific view: the stock should rise, but not too much.

Setup

BUY1x ATM CALL

SELL2x OTM2 CALL

Max Profit

Highest near the short strike

Max Loss

Unlimited upside risk after the extra short call overwhelms the long call

Breakeven

Depends on strikes and net premium

Ratio Call Spread Example

XYZ trades at $100 with 45 days to expiration. You buy one $100 call for $3.20 and sell two $110 calls for $1.10 each ($2.20 total). The trade opens for a net debit of $1.00 per share, or $100 for the 1 by 2 position. The spread between strikes is $10.

Stock at expiration	Result
$100 or below	All three calls expire worthless. You lose the $100 debit, which is the maximum loss on the downside.
$110	The $100 call is worth $10.00 ($1,000) and both $110 calls expire worthless. P&L is $1,000 minus the $100 debit, or $900, the maximum profit.
$119	Upper breakeven. The $100 call is worth $19.00 ($1,900) and the two short $110 calls cost $9.00 each ($1,800). Intrinsic value nets to $100, which the $100 debit cancels.
$125	The $100 call is worth $25.00 ($2,500) and the two short $110 calls cost $15.00 each ($3,000). Net intrinsic is −$500, and after the $100 debit the loss is −$600. Each further dollar of rally adds $100 to the loss.

Maximum profit is $900 if XYZ closes at $110. Downside loss is limited to the $100 debit, but the upside loss is unlimited above the $119 breakeven. The lower breakeven is $101, so the trade profits anywhere between $101 and $119.

When to Use a Ratio Call Spread

You are moderately bullish and expect the stock to rise to a specific level, such as a resistance area, but not blow through it.
Implied volatility is elevated in the out-of-the-money calls, making the two short calls rich relative to the long call you are buying.
You want a bull call spread but prefer to finance most or all of the cost by selling an extra call.
You would be comfortable being short the stock at the higher strike, or you own shares that cover the extra short call.
Typical entries use 30 to 60 days to expiration with the short strikes placed at a price the stock is unlikely to exceed within the time frame.

Risks to Understand

Upside risk is unlimited. A takeover announcement or a gap on earnings can push the stock far past the short strikes, and the naked call loses $100 for every dollar of rally beyond the breakeven.
Margin requirements are high because one of the short calls is uncovered. Brokers treat it like a naked call, so the capital tied up can be many times the debit paid.
Rising implied volatility hurts the position, especially when the stock is near or above the short strike, since the two short calls gain value faster than the single long call.
Both short calls can be assigned early once they are in the money, particularly before an ex-dividend date, leaving you short stock with only one long call as a hedge.
A quick early rally to the short strike does not produce the maximum profit immediately, because the short calls still hold time value. The peak only develops near expiration.

Managing the Trade

Many traders close once the stock nears the short strike and the position has captured 50 to 75 percent of the maximum profit, rather than risk a breakout waiting for expiration.
If the stock rallies through the short strikes, the simplest fix is to buy back one of the two short calls, converting the position into a standard bull call spread with defined risk.
Alternatively, the short calls can be rolled up to a higher strike or out to a later expiration, though this often requires paying a debit.
Set a loss trigger based on the stock price, not the position value, such as the upper breakeven, and act on it because the loss beyond that level grows without limit.
If the stock drops and the position is worth little, closing it for a small loss frees margin and removes the chance of a surprise rally later in the cycle.

Ratio Call Spread FAQs

What is a 1 by 2 ratio call spread?: It is a position that buys one call at a lower strike and sells two calls at a higher strike in the same expiration. The extra short call reduces or eliminates the cost of the spread, but it also creates unlimited risk if the stock rises far above the short strike. Maximum profit occurs when the stock expires exactly at the short strike.
How do you calculate the breakeven on a ratio call spread?: For a 1 by 2 spread opened for a debit, the lower breakeven is the long strike plus the debit. The upper breakeven is the short strike plus the spread width minus the debit. With a $100 long call, $110 short calls, and a $1.00 debit, the breakevens are $101 and $119.
Is a ratio call spread risky?: Yes on the upside. One of the short calls is uncovered, so the loss is unlimited if the stock keeps rising past the upper breakeven. On the downside the risk is only the debit paid, or zero if the trade was opened for a credit. The naked short call also means brokers require substantial margin.
Ratio call spread vs bull call spread: which should I use?: A bull call spread has defined risk and a lower maximum profit for the same strikes because you pay the full debit. A ratio call spread costs less or generates a credit and earns more at the short strike, but exposes you to unlimited loss above it. Choose the ratio spread only when a large rally looks unlikely or you own shares that cover the extra call.
What happens if the stock goes way above the short strikes in a ratio call spread?: The long call and one short call offset each other above the short strike, but the second short call keeps losing. Each dollar above the upper breakeven costs $100 per 1 by 2 spread. At $125 in the example the loss is $600, and at $135 it would be $1,600.
Can I do a ratio call spread against stock I own?: Yes. If you own 100 shares, the extra short call is covered by the stock, and the structure becomes a covered call combined with a bull call spread. This removes the unlimited risk and the naked margin requirement, though it caps the gain on your shares at the short strike.

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What Is a Ratio Call Spread?

Ratio Call Spread Example

Stock at expiration	Result
$100 or below	All three calls expire worthless. You lose the $100 debit, which is the maximum loss on the downside.
$110	The $100 call is worth $10.00 ($1,000) and both $110 calls expire worthless. P&L is $1,000 minus the $100 debit, or $900, the maximum profit.
$119	Upper breakeven. The $100 call is worth $19.00 ($1,900) and the two short $110 calls cost $9.00 each ($1,800). Intrinsic value nets to $100, which the $100 debit cancels.
$125	The $100 call is worth $25.00 ($2,500) and the two short $110 calls cost $15.00 each ($3,000). Net intrinsic is −$500, and after the $100 debit the loss is −$600. Each further dollar of rally adds $100 to the loss.

When to Use a Ratio Call Spread

You are moderately bullish and expect the stock to rise to a specific level, such as a resistance area, but not blow through it.

Implied volatility is elevated in the out-of-the-money calls, making the two short calls rich relative to the long call you are buying.

You want a bull call spread but prefer to finance most or all of the cost by selling an extra call.

You would be comfortable being short the stock at the higher strike, or you own shares that cover the extra short call.

Typical entries use 30 to 60 days to expiration with the short strikes placed at a price the stock is unlikely to exceed within the time frame.

Risks to Understand

Upside risk is unlimited. A takeover announcement or a gap on earnings can push the stock far past the short strikes, and the naked call loses $100 for every dollar of rally beyond the breakeven.

Margin requirements are high because one of the short calls is uncovered. Brokers treat it like a naked call, so the capital tied up can be many times the debit paid.

Rising implied volatility hurts the position, especially when the stock is near or above the short strike, since the two short calls gain value faster than the single long call.

Both short calls can be assigned early once they are in the money, particularly before an ex-dividend date, leaving you short stock with only one long call as a hedge.

A quick early rally to the short strike does not produce the maximum profit immediately, because the short calls still hold time value. The peak only develops near expiration.

Managing the Trade

Many traders close once the stock nears the short strike and the position has captured 50 to 75 percent of the maximum profit, rather than risk a breakout waiting for expiration.

If the stock rallies through the short strikes, the simplest fix is to buy back one of the two short calls, converting the position into a standard bull call spread with defined risk.

Alternatively, the short calls can be rolled up to a higher strike or out to a later expiration, though this often requires paying a debit.

Set a loss trigger based on the stock price, not the position value, such as the upper breakeven, and act on it because the loss beyond that level grows without limit.

If the stock drops and the position is worth little, closing it for a small loss frees margin and removes the chance of a surprise rally later in the cycle.

Ratio Call Spread FAQs

What is a 1 by 2 ratio call spread?

It is a position that buys one call at a lower strike and sells two calls at a higher strike in the same expiration. The extra short call reduces or eliminates the cost of the spread, but it also creates unlimited risk if the stock rises far above the short strike. Maximum profit occurs when the stock expires exactly at the short strike.

How do you calculate the breakeven on a ratio call spread?

For a 1 by 2 spread opened for a debit, the lower breakeven is the long strike plus the debit. The upper breakeven is the short strike plus the spread width minus the debit. With a $100 long call, $110 short calls, and a $1.00 debit, the breakevens are $101 and $119.

Is a ratio call spread risky?

Yes on the upside. One of the short calls is uncovered, so the loss is unlimited if the stock keeps rising past the upper breakeven. On the downside the risk is only the debit paid, or zero if the trade was opened for a credit. The naked short call also means brokers require substantial margin.

Ratio call spread vs bull call spread: which should I use?

A bull call spread has defined risk and a lower maximum profit for the same strikes because you pay the full debit. A ratio call spread costs less or generates a credit and earns more at the short strike, but exposes you to unlimited loss above it. Choose the ratio spread only when a large rally looks unlikely or you own shares that cover the extra call.

What happens if the stock goes way above the short strikes in a ratio call spread?

The long call and one short call offset each other above the short strike, but the second short call keeps losing. Each dollar above the upper breakeven costs $100 per 1 by 2 spread. At $125 in the example the loss is $600, and at $135 it would be $1,600.

Can I do a ratio call spread against stock I own?

Yes. If you own 100 shares, the extra short call is covered by the stock, and the structure becomes a covered call combined with a bull call spread. This removes the unlimited risk and the naked margin requirement, though it caps the gain on your shares at the short strike.