Payoff Diagram

A payoff diagram is a simple chart that shows how much money a trade would make or lose at different possible prices of the underlying stock or asset. It's a visual way to answer the question "what happens to my profit or loss if the price ends up here, or here, or here?" without having to do the math yourself for every scenario.

The chart works on two axes. The horizontal axis lists a range of possible prices for the stock (or other underlying instrument) at some point in time, often stretching well above and below the current price. The vertical axis shows the resulting dollar profit or loss for the trade at each of those prices. The line or shape drawn across the chart connects all these outcomes, so you can trace your finger along it and see the trade's result at any price point.

Payoff diagrams are most associated with options trading because options have outcomes that bend and kink rather than move in a straight line — a long stock position produces a simple diagonal line, but a call option, put option, or combination of several options (a "spread") produces a diagram with flat sections, angles, or curves. This is what makes the diagram useful: it lets a trader instantly see the maximum possible loss, the maximum possible gain, and the "breakeven" price (or prices) where the trade neither makes nor loses money, all in one glance rather than by calculating each one separately.

The nuance that trips people up is timing. Most payoff diagrams show the outcome only at option expiration, when there's no time left and the option's value is based purely on where the stock price landed. But a trade can look very different before expiration, because the option still has time value and other factors affecting its price. A diagram drawn for "at expiration" can be misleading if you're planning to exit the trade early, so it's worth checking whether the diagram you're looking at reflects expiration or some earlier date.