Binary Option Payout Structure

The payout structure of a binary option is discontinuous, meaning it does not change incrementally with the underlying price. Instead, it features a step function where the payoff jumps from zero to a fixed amount at the exact moment the underlying asset hits or exceeds the strike price.

This creates a binary, all-or-nothing outcome that is independent of the magnitude of the price move. If the asset price is even a fraction of a cent above the strike at expiry, the holder receives the full payout.

If it is below, the holder loses the entire premium. This mechanism simplifies profit calculation but introduces high sensitivity near the strike price.

Traders often model this using probability density functions to estimate the likelihood of finishing in the money. Because of this structure, the risk profile is significantly different from linear instruments.

It is a fundamental component of decentralized prediction markets where consensus mechanisms validate the final price.