What an options breakeven price means
The breakeven price is the stock price at which an option position neither makes nor loses money at expiration. When you buy an option you pay a premium up front. At expiration the option is worth only its intrinsic value, so the stock has to finish far enough past the strike for that intrinsic value to equal the premium you paid.
That is why breakeven sits beyond the strike: above it for a call, below it for a put. The more premium you pay, the further the stock has to travel before the trade pays for itself.
Call and put breakeven formulas
Multiply the per-share result by the contract size (usually 100) and the number of contracts to get the result for the whole position.
How to use the calculator
- Choose Call or Put. Use the arrow keys or click to switch.
- Enter the strike price from the option you are looking at.
- Enter the premium per share, the option’s quoted price. If you have not traded yet, the ask price is a realistic estimate of what a buyer pays.
- Add the current stock price (optional) to see the move to breakeven and how much of the premium is time value.
- Enter a price at expiration to test a scenario, or tap a shortcut such as At breakeven or Current +10%.
- Open Position size to change the number of contracts or the contract size if it is not 100.
Results update as you type. The chart shows the expiration payoff across a range of prices, with your scenario marked as a dot and breakeven as a vertical line.
How to read profit and loss at expiration
A long option’s result at expiration falls into one of four zones. The loss is capped at the premium you paid; the gain grows by $1 per share for every $1 the stock moves past breakeven.
Return on premium compares the profit or loss with what you paid. It can look large on a winning trade because the amount at risk is small, but a return of −100% (losing the whole premium) is also common for options that finish out of the money.
Breakeven vs strike, premium, intrinsic and extrinsic value
These terms are easy to mix up. The example below uses the call from above: $100 strike, $5.00 premium, stock at $95 today and $110 at expiration.
An option whose premium is all extrinsic value, like this out-of-the-money call, needs the stock to move just to recover what time decay will remove. The calculator shows this as the time value figure next to the option’s moneyness (ITM, ATM or OTM) at the current price.
What the breakeven result leaves out
The calculator uses the standard expiration formulas. Real trades have extra costs and risks that move the effective breakeven or change the outcome:
- Commissions and fees. Per-contract commissions and exchange or regulatory fees raise the effective premium. Add them per share to the premium for a closer estimate.
- Bid-ask spread. Buyers usually pay near the ask and sellers receive near the bid. On thinly traded options the spread can be a meaningful share of the premium, especially if you close before expiration.
- Implied volatility. Before expiration an option’s price depends heavily on implied volatility. A drop in volatility, for example after an earnings report, can lower the option’s value even if the stock moves in your direction.
- Time decay. Extrinsic value tends to shrink as expiration nears. The expiration breakeven assumes all of it is gone; the value on any earlier day will differ.
- Early exercise and assignment. Many equity options are American-style and can be exercised before expiration. Exercising early usually gives up any remaining time value, and option sellers can be assigned at any time. Some index options are European-style and cash-settled.
- Contract adjustments. Splits, special dividends and mergers can change a contract’s size or deliverable. Check the contract specifications and update the contract size if needed.
- Taxes. Tax treatment of options depends on your country, account type and holding period. The calculator shows pre-tax results; the capital gains tax calculator can help estimate the tax on a realized gain.
Results are for education and planning. They are not a forecast of what a stock or option will do and not a recommendation to buy or sell any security.