Are Prediction Markets Legal? US Rules and Eligibility Explained

"Is this even legal?" is the most common question newcomers ask about prediction markets — and it's the right question. The honest answer is: it depends on where you live, which platform you use, and rules that have shifted repeatedly. This guide explains the landscape in plain English so you know what to check. It is general education, not legal advice.

Laws and platform availability change often and vary by country and by US state. Always confirm the current rules for your own location before signing up or trading.

Why it's complicated

Prediction markets sit at an awkward intersection. A contract on "will the Fed cut rates?" can look like a financial derivative, like a bet, or like a gambling product, depending on how a regulator chooses to view it. Different bodies claim different pieces of that overlap, and they don't always agree. That's why the rules are a patchwork rather than a single clear law.

The US picture

In the United States, two broad frameworks matter:

• Federal commodity regulation. Event contracts can be regulated as derivatives by the Commodity Futures Trading Commission (CFTC). A platform operating as a CFTC-regulated exchange (such as Kalshi) sits in this lane. This is a financial-markets framework, separate from gambling law.
• State gambling law. Separately, individual states regulate gambling, and some have pushed back on event-contract platforms operating in their borders. This is why availability can differ from one US state to the next, even for the same platform.

The result: a platform may be available to users in some states and restricted in others, and that map can change as legal challenges play out.

Crypto-native platforms and US users

Crypto-native markets like Polymarket have had a complicated relationship with US access. For a stretch, US persons were restricted from using Polymarket following a settlement with the CFTC. Access arrangements for US users have evolved since then, including through CFTC-registered structures. Because this specific situation has changed more than once, treat any blanket statement as potentially out of date and check the platform's current terms for your country.

Outside the US

Other countries take their own approaches — some permit regulated event trading, some treat it as gambling requiring a license, and some restrict it. A platform that's available in one country may geoblock another. There's no single global rule.

How to check before you trade

A short, practical checklist:

1. Read the platform's terms and "restricted regions" page. Reputable platforms state plainly who can and can't use them.
2. Confirm your country — and US state — is supported. Don't assume; availability is granular.
3. Don't try to evade geoblocks. Using a VPN to bypass restrictions can violate the platform's terms and put your funds at risk.
4. When in doubt, get qualified advice. For anything involving meaningful money or your specific legal situation, talk to a professional in your jurisdiction.

A note on taxes

Wherever they're legal, gains from prediction markets may be taxable, and how they're classified varies. Keep records of your activity. Our general crypto tax guidance on record-keeping applies here too, but confirm the specific treatment with a tax professional.

Key takeaways

• Legality depends on your location, the platform, and rules that change often.
• In the US, CFTC-regulated exchanges operate under financial law, while state gambling rules can still limit access.
• Crypto-native platforms' US availability has shifted repeatedly — verify current terms.
• Always read a platform's restricted-regions page; don't use VPNs to evade geoblocks.
• This is general education, not legal or tax advice — confirm the rules where you live.