Breakeven and profit/loss at expiration for a single call or put position.
Breakeven price
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P/L at target price
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Max profit
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Max loss
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Payoff is calculated at expiration only (no time value / theta decay modeled). Commission is charged once to open and once to close (even if closed via exercise/assignment) — set it to $0 to ignore. 1 contract = 100 shares.
Solve for the option price you need to hit a target profit %, or check your live P/L against what you paid or received.
Price needed for target
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Gain at target
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Current P/L
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Current P/L %
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P/L is based purely on the option's premium (what you paid or received vs. its current quoted price), net of commission charged once to open and once to close — set it to $0 to ignore. Not a payoff-at-expiration model. Works the same for calls and puts; what matters is whether you're long or short. 1 contract = 100 shares.