Are Prediction Markets Legal? The CFTC vs. States (2026)

TL;DR

• Prediction markets structured as CFTC-designated event contracts are legal nationwide under federal commodities law. That status has never been the disputed part.
• What's actively contested is whether federal law also shields sports-outcome contracts specifically from state gambling regulation. As of August 2026, Kalshi has won that argument, at least preliminarily, in New Jersey, Tennessee, and Minnesota, and lost it in Massachusetts, Nevada, Washington, and Utah, where a federal judge issued the first final ruling against it on August 5, 2026.
• Arizona filed criminal charges against Kalshi in March 2026, the first ever brought against a CFTC-registered prediction market operator. New York sued for roughly $36 billion in July 2026.
• A bipartisan Senate bill (the Prediction Markets Are Gambling Act, S.4160) and the CFTC's own pending rulemaking could each resolve this before any appeals court does.

This is not legal advice, and the specific state-by-state answer can change with the next ruling. If you need a definitive answer for your situation, talk to a licensed attorney.

Ask "are prediction markets legal" and the honest answer is yes, then immediately, it depends which contract and which state you're standing in. Contracts listed on a CFTC-designated exchange, the same regulatory category as CME futures, are legal nationwide under federal commodities law.

That part isn't seriously contested anywhere. What is contested, loudly, in courtrooms across at least ten states right now, is whether that federal status also covers sports-outcome contracts specifically: the kind that pay out on who wins the Super Bowl rather than who wins a presidential election.

This week alone, a federal judge in Utah closed that question for good against Kalshi, while three Sixth Circuit judges spent an afternoon signaling they're leaning the same direction on Ohio. Here's the actual shape of that fight, not just whoever won the most recent headline.

What Actually Makes a Prediction Market Federally Legal?

Event contracts, yes-or-no contracts that pay $1 if a specified event happens and $0 if it doesn't, are commodity derivatives under the Commodity Exchange Act (CEA). The Commodity Futures Trading Commission has authority to designate the exchanges that list them and to determine which contracts are permissible, the same framework that governs futures and swaps on exchanges like the CME.

Kalshi has held that federal designation, called Designated Contract Market (DCM) status, since November 2020. Polymarket built its own path onto the same framework more recently: it acquired QCEX, a CFTC-licensed exchange and clearinghouse, for $112 million in July 2025, and the CFTC granted the resulting entity, QCX LLC, an Amended Order of Designation in November 2025 that let US users start trading through it.

None of that is a niche or borderline product anymore. Event contract listings across the industry went from roughly five a year between 2006 and 2020 to about 1,600 in 2025. Total trading volume on prediction markets grew from under $1 billion in June 2024 to nearly $24 billion by April 2026. That growth is exactly why the legal fight below has gotten this loud: there's real money riding on which regulator wins.

Non-sports event contracts, elections, economic data, weather, have not been seriously challenged by any state regulator. The fight described in this article is specifically about sports-outcome contracts.

Why Do States Say Sports Contracts Are Gambling, Not Derivatives?

Gambling has always been licensed and taxed state by state. Derivatives have always been regulated federally. A contract that pays out based on who wins a football game looks, to a state gaming commission, exactly like a wager. To the CFTC, it's a swap under the CEA, subject to exclusive federal jurisdiction regardless of what the underlying event happens to be.

Kalshi's legal argument rests on two forms of preemption. Field preemption holds that the CFTC's jurisdiction over CFTC-designated markets occupies the space entirely, leaving no room for state gambling law to apply. Conflict preemption holds that letting a state block a federally designated contract would directly undercut what Congress built the CEA to do: replace a state-by-state patchwork with one national standard for derivatives trading.

The CFTC itself has taken a side. On February 17, 2026, it filed a rare amicus brief (only its eighth since 2000) in the Ninth Circuit, arguing that the CEA gives it exclusive jurisdiction over event contracts and that state gambling enforcement against them is preempted. That's the agency that designates these exchanges telling a federal appeals court, in writing, that states shouldn't have a say.

Where Does Each State's Case Against Kalshi Actually Stand?

This is the part headlines tend to flatten into "Kalshi won" or "Kalshi lost," when the real picture is ten separate fights at different stages in different courts. Here's the tally as of early August 2026.

States where Kalshi has won, at least preliminarily:

• New Jersey. The Third Circuit ruled 2-1 in KalshiEX LLC v. Flaherty on April 6, 2026 that federal law preempts New Jersey's gambling law, holding that Kalshi's sports contracts qualify as swaps under both field and conflict preemption. This is the strongest appellate win Kalshi has, though one judge dissented.
• Tennessee. A federal judge temporarily blocked the state's cease-and-desist order in January 2026, letting Kalshi keep operating while the underlying case proceeds.
• Minnesota. A federal judge blocked the state's prediction-market ban on July 27, 2026, in a case where the US government and the CFTC sued alongside Kalshi and Polymarket. This is the first ruling to shield both platforms at once.

States where Kalshi has lost:

• Massachusetts. A Suffolk County Superior Court judge issued a preliminary injunction in January 2026, ruling that Kalshi's sports contracts are subject to the state's gaming law.
• Nevada. A state judge granted the Nevada Gaming Control Board a temporary restraining order on March 20, 2026, rejecting Kalshi's preemption argument outright. A related federal appeal, with Kalshi, Robinhood, and Crypto.com all challenging Nevada's regulator, was argued at the Ninth Circuit on April 16, 2026 and remains undecided.
• Washington. A federal court granted a preliminary injunction against Kalshi on July 21, 2026, rejecting its preemption defense.
• Utah. The most significant loss so far. On August 5, 2026, Judge Robert J. Shelby granted Utah summary judgment and closed the case outright, the first final (not just preliminary) federal ruling against Kalshi's preemption theory. Kalshi is appealing to the Tenth Circuit.

Still on appeal, undecided:

• Ohio. A district court denied Kalshi's injunction request; the Sixth Circuit fast-tracked the appeal (KalshiEX LLC v. Schuler, No. 26-3196) and heard oral arguments on August 3, 2026, where judges reportedly pushed back hard on Kalshi's position.
• Maryland. A district court denied Kalshi's injunction; the Fourth Circuit heard oral arguments on May 7, 2026, with the panel openly skeptical. Judge Gregory's comment from the bench, "it's gambling, isn't it? So you do gambling, it's basically gambling," captures where that panel seems to be leaning.

Escalated beyond a civil dispute:

• Arizona. Attorney General Kris Mayes filed criminal charges against KalshiEX LLC in Maricopa County Superior Court on March 17, 2026, the first criminal prosecution ever brought against a CFTC-registered prediction market operator.
• New York. Attorney General Letitia James sued Kalshi in state court on July 31, 2026, seeking roughly $36 billion through restitution, disgorgement, and per-violation penalties. The suit is pending.

Line those up and a pattern emerges. Wins cluster where courts read the CEA as an exclusive-jurisdiction statute. Losses cluster where judges look at a sports contract and see a bet in substance, regardless of its wrapper. With three more circuits due to rule and no two circuits required to agree with each other, this is heading toward exactly the kind of split the Supreme Court exists to resolve, and PYMNTS has already floated Supreme Court review as a live possibility.

Does Any Single Ruling Settle This for Good?

No, and that's the part worth understanding independent of whatever ruling is in the news this week. Kalshi's legal basis doesn't reset every time a new state objects, because the source of its authority, the CEA itself, hasn't changed. A loss in Utah doesn't erase the win in New Jersey. A win in Minnesota doesn't bind a judge in Ohio.

That's also why this is fundamentally a federal question asked repeatedly in different courtrooms, not a 50-state patchwork the way sports-betting licensing is. The architecture is what's stable. The case names are just where it keeps getting tested, one circuit at a time, until enough of them disagree that the Supreme Court has a reason to step in.

Could Congress or the CFTC Settle This Before the Courts Do?

Possibly, and on two separate tracks. In Congress, Senators Adam Schiff and John Curtis introduced the bipartisan Prediction Markets Are Gambling Act (S.4160) on March 23, 2026, with Senator Catherine Cortez Masto joining as a sponsor and a House companion (H.R. 9856) from Representatives Steven Horsford and Mark Amodei.

The bill would bar CFTC-regulated platforms from listing sports and casino-style contracts entirely and hand that authority back to states, a position backed by a coalition of nearly all state attorneys general. The stakes are not abstract: a single March Madness winner contract topped $100 million in trading volume, and Super Bowl-related trading across prediction markets passed $1 billion in 2026.

At the CFTC itself, the agency withdrew a prior proposal in February 2026 that would have deemed political and sports-related event contracts "contrary to the public interest." It replaced that approach with a new rulemaking track: a March 2026 staff advisory on market oversight, followed by a formal proposed rule on June 10, 2026 (RIN 3038-AF65) that would amend the review process for event contracts under Rule 40.11.

The comment period closed July 27, 2026, and no final rule has been issued. The White House has reportedly been reviewing the CFTC's approach as well.

Either track, a final CFTC rule or a signed bill, could settle the sports-contract question by statute or regulation before any circuit court gets there. Until one does, the courts are where this actually gets decided, case by case.

What Does This Mean for Polymarket, Predict.Fun, Opinion, and Limitless?

Polymarket is no longer a bystander to this fight. Since acquiring its CFTC-designated exchange in 2025 and filing on April 28, 2026 for broader approval to bring US users onto its main platform directly, it has effectively inherited the same legal exposure Kalshi has: it was a named party alongside Kalshi in the Minnesota case that produced one of the two clearest wins either platform has. As Polymarket's US-facing business grows, expect its name to start showing up in more of these state cases, not fewer.

Predict.Fun and Opinion have not appeared in any of the state lawsuits, CFTC filings, or congressional proposals referenced in this piece, and neither has sought the kind of DCM designation Kalshi and Polymarket now hold.

That's not evidence of a legal problem; it mostly reflects that neither operates the US retail sports-contract business that's actually being litigated. Their regulatory posture, in other words, isn't publicly documented the way Kalshi's and Polymarket's now is, because they haven't been part of this specific fight.

Limitless runs its markets on-chain, which raises a separate and still largely unanswered question: how a framework built around centralized, designated exchanges applies to markets that settle through smart contracts instead. That question hasn't reached a US court yet in the way Kalshi's has.

PredictionHero tracks live odds across all five platforms, which is a useful way to see this fight from the trading side rather than the legal-brief side: watch how a platform's sports-contract availability actually narrows or expands state by state as these rulings land, instead of waiting for the next headline to explain it after the fact. For the platform-specific detail behind this article, our Kalshi review covers its fee structure and account experience alongside this same litigation. If you're newer to how any of this works, our prediction markets explainer is the right starting point.

Sources

• CFTC. "CFTC Designates KalshiEX LLC as a Contract Market." Press release, November 2020. cftc.gov
• Paul, Weiss. "A Divided Third Circuit Holds That the CFTC Has Exclusive Jurisdiction Over Sports-Related Event Contracts." April 2026. paulweiss.com
• CNBC. "New Jersey cannot regulate Kalshi's prediction market, U.S. appeals court rules." April 7, 2026. cnbc.com
• SBC Americas. "Nevada Judge Orders Kalshi to Pause Sports Event Contracts." March 20, 2026. sbcamericas.com
• Holland & Knight. "Federal Appeals Court: CFTC Jurisdiction Over Sports Event Contracts Likely Exclusive." April 2026. hklaw.com
• Law.com / The National Law Journal. "'Basically Gambling'?: 4th Circuit Questions Kalshi's Anti-State-Regulation Claim." May 7, 2026. law.com
• DeFi Rate. "Kalshi Loses Bid to Block Ohio Enforcement as Sixth Circuit Fast-Tracks Appeal." 2026. defirate.com
• Bettors Insider. "Sixth Circuit Judges Appear Ready to Side With States Over Kalshi in Prediction Market Fight." August 3, 2026. bettorsinsider.com
• Gambling Insider. "Utah Becomes First State to Secure Final Federal Ruling vs. Kalshi." August 2026. gamblinginsider.com
• Bettors Insider. "Federal Judge Rules Utah Can Enforce Anti-Gambling Laws Against Kalshi Sports Betting Contracts." August 5, 2026. bettorsinsider.com
• Morgan Lewis. "Arizona Files First Criminal Charges Against a Prediction Market." March 2026. morganlewis.com
• CNBC. "New York sues Kalshi, says prediction market is running 'illegal gambling operation.'" July 31, 2026. cnbc.com
• Forbes. "New York Wants $36 Billion From Kalshi. A Federal Judge Next Door Just Shielded It." August 4, 2026. forbes.com
• WilmerHale. "CFTC Files Amicus Brief Urging Exclusive Federal Jurisdiction of Event Contracts." February 2026. wilmerhale.com
• Federal Register. "Prediction Markets; Public Interest Determinations." June 12, 2026. federalregister.gov
• CNBC. "Prediction markets regulation proposal by CFTC eyed by White House." May 27, 2026. cnbc.com
• Sen. Adam Schiff. "Sens. Schiff, Curtis Introduce Bipartisan Legislation to Ban Sports Prediction Market Contracts." March 2026. schiff.senate.gov
• Congress.gov. "S.4160, Prediction Markets Are Gambling Act, 119th Congress." congress.gov
• PR Newswire. "Polymarket Acquires CFTC-Licensed Exchange and Clearinghouse QCEX for $112 Million." 2025. prnewswire.com
• Bloomberg. "Polymarket Seeks CFTC Blessing to Bring Main Exchange Back to US." April 28, 2026. bloomberg.com

---

PredictionHero aggregates publicly available prediction market data for informational purposes only. This is not financial or legal advice. Prediction markets may not be available in all jurisdictions, and the legal status of sports event contracts specifically is unsettled and changing state by state.