Call Ratio Spread Calculator
A call ratio spread buys one call and sells two or more higher calls, often for a credit. It peaks at the short strike and then turns down — losses above the upper breakeven are unlimited because the extra short calls are naked.
The arithmetic
The default buys one $100 call at $3.50 and sells two $110 calls at $1.20 — a net debit of $1.10, or $110.
- Peak profit = at $110: (10 − 1.10) × 100 = $890.
- Lower breakeven = $101.10.
- Upper breakeven = $118.90 — above this the position loses.
- Max loss = unlimited above $118.90, because the second short call has nothing covering it.
- Downside = the $110 debit, if the stock finishes at or below $100.
The shape nobody expects
This is a bullish position that stops being bullish. It makes money as the stock rises to $110, makes the most exactly there, and then gives it all back and keeps going. A trader who is right about direction and too right about magnitude loses on a call ratio spread — an outcome that feels deeply unfair the first time it happens.
Look at the chart's right-hand side. That downward ray does not stop. One of your two short calls is covered by the long $100 call; the other is naked, and behaves exactly like a naked short call above $110.
When the structure is actually right
When you expect a move to a specific level and no further — a rally into known resistance, a recovery to a prior high, a drift toward a takeover price. In those cases the ratio pays far more at the target than a plain spread would, sometimes for a credit, and the tail risk sits at a price you have a real reason to think will not be reached.
What it is not is a cheaper bull call spread. The bull call spread caps at the upper strike and stays capped. This one caps and then reverses.
Margin and assignment
The naked short call carries naked-option margin, which is materially higher than spread margin and grows as the position moves against you. Brokers also require specific approval levels for it. Check both before assuming you can put this on at the size the chart implies.
Where the 100x multiplier comes from
Product specification, not convention: OCC defines a standard equity option as covering 100 shares, premium quoted in points where one point is $100[1] — so a $1.85 premium costs $185, and every payoff here applies that multiplier to the leg structure.
One exception is worth knowing about: adjusted contracts, covered on the options profit calculator.
Calculating it is the easy half
The ratio is easy to price and easy to misread. The payoff is arithmetic — anyone can run it. What it cannot show is whether you believed the trade when you put it on, or are describing a winner picked out of a month of noise.
That is the gap kappi closes: the position committed before the fact, sealed and timestamped on a log nobody can edit afterwards. A screenshot of this chart proves you can use a calculator; a sealed commit proves you took the trade. $15/month, no free tier.
Sources
Frequently asked questions
Why does a call ratio spread lose money if the stock rises too far?
Because you sold more calls than you bought. Above the short strike the uncovered call loses a dollar for every dollar the stock rises, and eventually overtakes the profit on the long call.
What is the upper breakeven on a 1x2 call ratio spread?
Short strike + (strike width − net debit) for a 1x2. In the default, $110 + (10 − 1.10) = $118.90. Above it the position loses without limit.
Is a call ratio spread defined risk?
No. The extra short call is naked, so the loss above the upper breakeven is unlimited. It also carries naked-option margin.
When is a ratio spread better than a bull call spread?
When you expect the underlying to reach a specific level and stop. The ratio pays much more at that level, often for a credit, but punishes a move well past it.