Learn / Policy
Are prediction markets legal? The 2026 fight, explained.
Short answer
Prediction markets in the US are listed on CFTC-regulated exchanges, but many states argue sports event contracts are gambling they can regulate. In 2026 federal appeals courts split on that question, so availability can still change by state. This is a summary, not legal advice.
This page summarizes public reporting as of November 3, 2026. Court cases are moving quickly. It is not legal advice. Check the sources and your platform’s current availability before relying on it.
Two regulators, one contract
US prediction market exchanges such as Kalshi operate as exchanges regulated by the Commodity Futures Trading Commission (CFTC). The CFTC’s position is that event contracts listed on those exchanges fall under federal commodities law and its exclusive jurisdiction. Many states take a different view of sports contracts: to a state gaming regulator, a contract that pays out if a team wins looks like a sports bet, which states license, tax and in some cases restrict.
The legal questions are whether sports event contracts count as “swaps” under the Commodity Exchange Act, and whether that federal law pre-empts state gambling laws. Courts answered differently in 2026.
What happened in 2026
| When | What | Source |
|---|---|---|
| April | Third Circuit ruled against New Jersey, holding that the CFTC has exclusive authority over swaps | CNBC |
| May 18–19 | Minnesota enacted a ban on prediction markets; the CFTC sued to block it the next day | The Block |
| August | Ninth Circuit ruled that Nevada can regulate sports event contracts as sports bets | CNBC |
| September | New Jersey asked the Supreme Court to take up the question | CNBC |
| September 25 | Sixth Circuit unanimously held Ohio and Tennessee can apply gambling laws to Kalshi’s sports contracts | CNBC |
Sources: CNBC, September 25, 2026; The Block, May 19, 2026. CNBC reported that the CFTC had sued nine states to defend its claimed exclusive authority, and that the split between circuits makes a Supreme Court review more likely, though not certain.
Why the circuit split matters
When federal appeals courts disagree on the same legal question, the outcome can depend on where you live. For now, that means sports event contracts may be available in some states and restricted in others, and availability can change after a ruling. The Supreme Court resolves splits like this when it agrees to hear a case; until then, expect a patchwork.
What it means if you trade
- Availability can change. A platform may restrict a category in your state after a ruling or settlement. Check the platform, not social media.
- Sports contracts carry the most legal uncertainty. Most 2026 litigation focused on them. Economic, weather and other non-sports contracts raise different questions.
- Open positions. Read the platform’s terms on what happens to positions if a market is withdrawn in your jurisdiction.
- Taxes. Treatment of event contract gains is a question for a tax professional, not a blog post.
What does not change
Whatever the courts decide, the economics are the same: a contract price is a probability estimate, fees and spread decide your break-even, and the rules decide settlement. Our guides on how prediction markets work and comparing sports markets with sportsbooks cover those mechanics.
Kelix and regulation
Kelix builds research tools. We are independent of Kalshi, Polymarket and sportsbooks, we do not operate an exchange, and Kelix Lines and Kelix Lab do not place trades. We will update this page as major rulings land.
Frequently asked questions
Are prediction markets legal in the US?
Exchanges such as Kalshi operate under CFTC oversight. Several states dispute that sports event contracts are exempt from state gambling law, and appeals courts disagreed in 2026. Check the platform for availability in your state.
Which states ban prediction markets?
Minnesota passed an outright ban in May 2026, and the CFTC sued to block it the next day. Other states have pursued enforcement or licensing rather than bans. The list changes as cases move, so verify current status.
Will the Supreme Court decide?
Possibly. New Jersey asked the Supreme Court to take the question in September 2026 after the circuits split. Whether and when it hears a case was not known at the time of writing.
Does regulation affect non-sports markets?
Most of the 2026 litigation focused on sports event contracts. Election, economic and weather contracts raise different questions, though a broad ruling on federal preemption could affect them too.
Educational content, not financial, legal or tax advice. Prediction markets involve risk, including loss of capital. Examples are illustrative calculations, not live quotes or trading results. Kelix is independent of Kalshi, Polymarket, Robinhood and sportsbooks.