Regulatory
Binary Option
Reviewed by iGaming Times editorial teamLast reviewed 24 September 2026
What is Binary Option?
A contract that pays a fixed amount if a stated condition is met at expiry and nothing if it is not. Most US prediction-market event contracts use this same yes-or-no, all-or-nothing structure.
Key takeaways
- A binary option pays a fixed amount if a stated condition is met at expiry and nothing if it is not.
- Its price between zero and the payout reads as a probability, which is why it resembles a bet as much as a derivative.
- On a CFTC-registered exchange it is a federal derivative; the same exposure offered by a sportsbook is state-regulated gambling.
Why it matters
A binary option has only two outcomes, which is what makes it simultaneously a derivative and something that looks a great deal like a bet. The buyer pays a price between zero and the full settlement amount, and at expiry receives either the full amount or nothing. Because the price sits between those bounds, it reads directly as a probability: a contract settling at $1.00 trading at $0.35 implies a 35% chance.
That dual character is the whole regulatory argument in American prediction markets. Listed on a designated contract market and cleared through a derivatives clearing organisation, a binary option is a federally regulated instrument supervised by the CFTC. Offered by a sportsbook on the same underlying event, the identical economic exposure is state-regulated gambling with different tax, advertising and player-protection obligations. Several state regulators have argued the substance should govern; the exchanges argue the venue and the instrument do. The distinction also has history: binary options were for years a byword for retail fraud offered from offshore platforms, and both the CFTC and the FBI ran public warning campaigns about them, which is part of why the term carries baggage that the exchanges themselves tend to avoid using.
The bottom line
A binary option is a derivative whose price is a probability. Whether it is also gambling is the question every American court is currently being asked.
Sources
- Understanding Prediction Markets and Event Contracts - Commodity Futures Trading Commission
- CFTC/SEC Investor Alert: Binary Options and Fraud - Commodity Futures Trading Commission
- Binary Options Fraud: A Word of Warning to the Investing Public - Federal Bureau of Investigation
Frequently asked questions
What is a binary option?
A binary option is a contract with two possible outcomes. The buyer pays a price between zero and a fixed settlement amount, and at expiry receives either the full amount, if the stated condition is met, or nothing. Because the price sits between those bounds, it reads directly as the market's estimate of probability: a contract paying $1.00 that trades at $0.35 implies a 35% chance.
Are prediction market event contracts binary options?
Many US prediction market event contracts have the same yes-or-no, all-or-nothing structure as a binary option. The exchanges usually describe their products as event contracts instead, partly because the older term is associated with offshore retail fraud, and the CFTC notes that some event contracts combine several yes-or-no contracts or offer ranges with partial payouts rather than an all-or-nothing result.
Why does it matter whether a binary option is gambling?
The answer decides who regulates the product. Listed on a CFTC-registered designated contract market, a binary option on a sporting event is a federally supervised derivative. Offered by a sportsbook, the same economic exposure is state-regulated gambling with its own licensing, tax, advertising and player-protection rules. State regulators argue the substance should govern; the exchanges argue the venue and the instrument do.