The honest one-line answer, friend: prediction markets are legal at the federal level, contested state by state, and now the subject of a straight contradiction between two federal appeals courts. That last part is new, and it is the whole story. In April a federal appeals court ruled that Kalshi’s sports contracts are financial swaps beyond a state’s reach. In August a different federal appeals court read the same law and ruled they are not. Same product, same statute, opposite answers — which is precisely the situation that ends up at the Supreme Court.
Here is where it actually stands, and what it means if you’re deciding whether to put money on one.
The One Question Everything Turns On
Strip out the legal vocabulary and it reduces to a single question: is a contract on the outcome of a football game a financial derivative or a bet?
If it’s a derivative, it belongs to the Commodity Futures Trading Commission under the Commodity Exchange Act, and federal law overrides state gambling rules. If it’s a bet, it belongs to the states, which license and tax sports betting and have their own regulators. Every lawsuit, injunction and ban flows from how a given judge answers that one question. And judges do not agree.
Federally: Legal, and the CFTC Is Defending It
At the national level there is no ambiguity. Kalshi operates as a CFTC-registered exchange, and Polymarket re-entered the US market under the same framework. The federal position is that event contracts fall under exclusive federal jurisdiction, and the CFTC has backed that position in court rather than just asserting it — including joining the platforms in suing a state to stop a ban taking effect.
The Circuit Split, in Plain Terms
This is the part worth understanding, because it explains why nobody can give you a clean answer.
| Court | When | Held | Effect |
|---|---|---|---|
| Third Circuit Kalshi v. New Jersey | 4 April 2026 (2–1) | Sports contracts are swaps; federal law preempts NJ gambling law | New Jersey blocked from enforcing |
| Ninth Circuit Kalshi v. Nevada | 28 August 2026 | Sports contracts are not swaps; Nevada’s gaming rules apply | Nevada’s block stands |
Read those two rows again. The identical product from the identical company is federally shielded in New Jersey and subject to state gaming enforcement in Nevada, because two panels of federal appellate judges interpreted the same definition and reached opposite conclusions. That is not a grey area or a slow rollout. It is a direct conflict, and a circuit split on a federal statute is the textbook reason the Supreme Court takes a case.
Until that happens, which court’s reasoning applies to you depends on which circuit your state sits in. That is an absurd way to run a national market, and everyone involved knows it.
The States That Tried to Ban Them
Minnesota went furthest, passing a first-of-its-kind law in May 2026 to criminalise prediction markets. It never took effect: days before the 1 August start date, a federal judge granted a preliminary injunction, finding the platforms likely to succeed on their argument that the CFTC has exclusive jurisdiction over these contracts. The platforms continue serving Minnesota users while the case proceeds. If you read somewhere that Minnesota banned prediction markets, that is half the story — the legislature did, the courts stopped it.
Nevada is the one place where the state clearly won. A judge found Kalshi’s sports contracts “indistinguishable” from a bet at a licensed Nevada sportsbook, and the Ninth Circuit let that stand in August. Sports event contracts are not available in Nevada without a gaming licence.
Maryland is where the states have gathered their strength: 38 states filed briefs supporting Maryland’s position that these contracts are unlicensed sports bets subject to state law. Several other states have issued cease-and-desist orders and been met with federal countersuits.
Where You Can Actually Trade Today
As a practical matter, prediction markets are live in most states, and Nevada is the clearest exception for sports contracts. Several other states are contested and availability can change on a single ruling — which is why any list of “legal states” you find, including any implied by this page, carries an expiry date. Check the platform’s own state availability at sign-up rather than trusting an article, this one included.
The Monkey’s Take: What This Means If You Play Casino
Two things, said plainly.
They are not a casino, and they are not a substitute for one. There are no slots, no live dealer, no table games — you are taking a position on a real-world outcome, on a platform regulated as a financial exchange. If you landed here because your sweepstakes casino closed and you’re looking for somewhere to play, this is not it; we set out the routes that actually are in where US players are going next.
And the legal ground is unresolved, which is different from illegal and also different from settled. Two appeals courts contradict each other, a Supreme Court review looks likely, and a single decision could change availability in your state overnight. That is a real risk to weigh, not a technicality — and this uncertainty exists despite federal registration, not because of its absence.
If what you want is real-money casino play, the safer routes haven’t changed: a regulated operator if your state licenses one, or an established offshore brand chosen on payout record. Our is online gambling legal in the USA guide covers where your state stands, and best crypto casinos USA ranks the offshore options on payout evidence. For the argument about whether prediction markets are simply sports betting wearing a suit, see prediction markets vs sports betting.
Frequently Asked Questions
Are prediction markets legal in the US?
Federally, yes: Kalshi and Polymarket operate under the CFTC, which regulates them as derivatives markets and claims exclusive jurisdiction. Several states argue the sports versions are gambling. In August 2026 the Ninth Circuit agreed with that view, while in April the Third Circuit had rejected it — so the answer now depends partly on which federal circuit your state falls in, pending a likely Supreme Court review.
Did Minnesota ban prediction markets?
The legislature passed a ban in May 2026, but it never came into force. A federal judge blocked it days before its 1 August start date, finding that federal law likely gives the CFTC exclusive jurisdiction. The platforms still operate in Minnesota while the litigation continues.
Is Kalshi available in Nevada?
Not for sports event contracts. A Nevada judge found them “indistinguishable” from a licensed sportsbook bet, and in August 2026 the Ninth Circuit held they are not swaps, so Nevada’s gaming rules apply. Operating there requires a Nevada gaming licence.
Why are two federal courts disagreeing?
Because they answered the same question differently: whether a sports event contract is a “swap” under the Commodity Exchange Act. The Third Circuit said yes, which makes it federal territory and blocks state gambling law. The Ninth Circuit said no, which leaves state gaming regulation intact. A split like this between appeals courts on a federal statute is the standard reason the Supreme Court steps in.
Are prediction markets the same as online casinos?
No. They are financial contracts on real-world outcomes traded on a CFTC-regulated exchange, not casino games. There are no slots or table games, the risk profile is different, and their legal status is unsettled in a way a licensed casino’s is not. They are not a replacement for a casino or a sportsbook.
18+ (21+ where required) · This article is general information, not legal or financial advice — prediction-market law varies by state and is changing quickly; verify the current position before acting. Play responsibly. Problem gambling? Call 1-800-GAMBLER or the National Council on Problem Gambling at 1-800-522-4700 in the US; in Canada, ConnexOntario at 1-866-531-2600.