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Digital Option

A digital option is an option that pays a fixed amount of money or nothing at all at expiration, depending on whether the underlying asset finishes above or below a set strike price.

What Is a Digital Option?

A digital option is a type of exotic option with an all-or-nothing payoff. Instead of gaining value in proportion to how far the price moves, it pays a predetermined amount if a condition is met at expiration date and pays nothing if it is not. The condition is usually whether the underlying asset finishes above or below a strike price. Because the payout is fixed, the buyer knows the maximum gain before purchasing. Digital options are sometimes called binary options.

Digital options come in two common forms. A cash-or-nothing option pays a fixed cash sum. An asset-or-nothing option pays the value of the underlying asset itself if the condition is met. Both are used in over-the-counter markets and in some structured products.

How It Works

Suppose a digital call option on a stock pays 100 units if the stock closes above 50 at expiration. If the stock closes at 51, the holder receives 100. If it closes at 49, the holder receives nothing. The buyer pays a premium upfront, and the difference between the premium and the payout determines profit or loss.

Pricing differs from a vanilla option. A vanilla option's value changes smoothly as the price moves, while a digital option's value can jump sharply near the strike as expiration approaches. Traders often describe this sensitivity in terms of how the probability of finishing in the money shifts, which is linked to implied volatility.

Risks and Considerations

A digital option can lose its entire premium if the condition is not met. Short time frames and sharp price sensitivity can make outcomes hard to predict, and the payoff structure differs from that of standard listed options, so readers should understand the exact terms before trading. In retail settings, particularly online platforms offering binary options, many regulators in various countries restrict or prohibit sales to individual investors because of concerns about investor losses and fraud. Rules vary by jurisdiction, so checking local regulations matters.

Updated October 30, 2026. For general education only; not financial, tax or legal advice.

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Related Terms

Exotic Option

A type of option with non-standard features, such as payoffs tied to price barriers, averages, or several assets, rather than the terms of a standard call or put.

Expiration Date

The expiration date is the last day on which a derivative contract, such as an option or futures contract, remains valid and can be exercised, after which it becomes void.

Underlying Asset

An underlying asset is the financial instrument or commodity on which a derivative's value depends, such as a stock, bond, index, currency, or physical commodity.

Strike Price

The strike price is the fixed price at which the holder of an option can buy or sell the underlying asset, such as a stock, when the option is exercised.

Vanilla Option

A vanilla option is a standard call or put contract with conventional terms, a fixed strike price, and a set expiration date, lacking the special features found in more complex options.

Implied Volatility (IV)

Implied volatility is the level of future price movement that the market expects for an asset, inferred backward from the current market price of its options.

Binary Option

A binary option is a type of option with a fixed, all-or-nothing payout: the holder receives a set amount if a specified condition is met at expiration, and nothing if it is not.