Options Break-Even Calculator
Find the break-even price for a call or put option at expiration: strike plus premium for calls, strike minus premium for puts. The price the underlying must reach to start profiting.
Last updated: May 2026
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About this calculator
The break-even price of an option is the price the underlying stock must reach at expiration for the option buyer to recover the premium paid and start making a profit. The calculation depends on the option type. For a call option (the right to buy at the strike), the break-even is strike price + premium, because the buyer must first recoup the cost of the option before the gains from the rising stock turn into profit. For a put option (the right to sell at the strike), the break-even is strike price − premium, because the stock must fall far enough below the strike to cover the premium paid. This calculator returns whichever applies based on the option type you select. Understanding break-even is essential for options buyers because the premium is a sunk cost: simply being 'in the money' at expiration is not enough to profit — the move must exceed the premium. Edge cases and important caveats: this formula gives the break-even at expiration for a single long option, ignoring commissions, fees, and the time value that affects an option's price before expiration. It assumes one contract's per-share premium; remember a standard U.S. equity option controls 100 shares, so total cost and profit scale by 100. It also does not account for early assignment, dividends, or multi-leg strategies like spreads, which have their own break-even points. For an option seller (writer), the profit/loss profile is the mirror image. Always compare the break-even to a realistic expectation of where the stock will be, since options that require a large move are correspondingly less likely to pay off.
How to use
Example 1 — a call option with a $100 strike and $5 premium. Select Option Type = Call, Strike Price = 100, Premium = 5. Break-even = 100 + 5 = $105. Verify: the stock must rise above $105 by expiration for the call buyer to profit; between $100 and $105 the option has value but not enough to cover the premium. Example 2 — a put option with a $100 strike and $5 premium. Select Option Type = Put, Strike Price = 100, Premium = 5. Break-even = 100 − 5 = $95. Verify: the stock must fall below $95 for the put buyer to profit; at exactly $95 the gain from the decline just offsets the premium paid.
Frequently asked questions
Why does the premium get added for calls but subtracted for puts?
Because calls and puts profit from opposite price movements. A call buyer profits when the stock rises, so the stock must climb above the strike by enough to cover the premium — hence strike plus premium. A put buyer profits when the stock falls, so the stock must drop below the strike by enough to cover the premium — hence strike minus premium. In both cases the premium is the upfront cost that must be recovered before any profit begins. The break-even simply marks the price where the option's intrinsic value exactly equals what you paid. Getting the direction backwards is a common beginner mistake.
Does being 'in the money' mean I made a profit?
No — this is one of the most common misunderstandings in options trading. An option being in the money at expiration means it has intrinsic value, but you only profit if that intrinsic value exceeds the premium you paid. For example, a $100 call bought for $5 is in the money at $103, but you still lose $2 per share because the stock did not reach the $105 break-even. The break-even, not the strike, is the true profit threshold for a buyer. Exercising or selling an in-the-money option that is below break-even simply recovers part of your premium, reducing the loss rather than producing a gain.
Does this account for fees and time value?
No. This calculator gives the theoretical break-even at expiration for a single long option, based only on strike and premium. In reality, brokerage commissions and fees raise your effective break-even slightly, so include them for precision. Before expiration, an option's market price also includes time value (extrinsic value) that decays as expiration approaches, so your break-even for selling the option early differs from the expiration break-even. Factors like implied volatility changes can move the option's price independently of the stock. Use this figure for expiration planning, and remember that closing a position early involves a different, more complex calculation.
How does the 100-shares-per-contract multiplier work?
A standard U.S. equity option contract controls 100 shares of the underlying stock, so although break-even is expressed per share, your actual dollar outlay and profit scale by 100 per contract. A $5 premium means $500 paid per contract, and each dollar the stock moves past break-even is worth $100 per contract. The break-even price itself does not change with the number of contracts, but your total risk and reward do. Beginners sometimes forget this multiplier and underestimate both the cost and the potential gain or loss. Always multiply per-share figures by 100 (and by the number of contracts) to size a position correctly.
When should I NOT use this calculator?
Avoid it for multi-leg strategies — spreads, straddles, strangles, iron condors — which have one or more different break-even points that this single-option formula does not capture. It also does not apply cleanly to option sellers (writers), whose profit and loss profile is the inverse, nor to positions you intend to close before expiration, where time value and volatility dominate the price. It ignores commissions, dividends, and early-assignment risk, all of which can shift your real outcome. And it says nothing about probability — a break-even far from the current price may be mathematically simple but practically unlikely. Use it for the expiration break-even of a single long call or put, and turn to a strategy-specific tool for anything more complex.