The fight over whether prediction markets are actually sportsbooks under a different name could finally be heading to the U.S. Supreme Court.
New Jersey filed a petition on September 2, 2026 asking the Supreme Court to review an appeals court decision that prevented the state from applying its gambling laws to Kalshi. At the center of the case is a question that has become increasingly important as prediction markets have exploded in popularity: who actually gets to regulate sports contracts offered by platforms like Kalshi?
Kalshi argues that its contracts are financial products regulated at the federal level by the Commodity Futures Trading Commission. New Jersey sees them very differently. The state argues that when someone puts money on whether a team will win a football game, the product is effectively sports betting and should be subject to the same state gambling laws as any other sportsbook.
Until recently, Kalshi had a major court decision supporting its position. Now two federal appeals courts have reached opposite conclusions, giving the Supreme Court a much stronger reason to get involved.
New Jersey Lost Its First Major Fight Against Kalshi
The dispute dates back to New Jersey’s attempt to stop Kalshi from offering sports event contracts without a state gaming license.
Kalshi does not operate like DraftKings, FanDuel or another traditional sportsbook. Instead of placing a conventional wager, users buy and sell contracts tied to the outcome of an event. A sports contract could be based on whether a particular team wins a game, with the value of that contract changing as the market’s expectations change.
That distinction is at the center of Kalshi’s legal argument.
Because Kalshi operates as a federally regulated designated contract market, it argues that its event contracts fall under the Commodity Exchange Act and the authority of the CFTC. If that interpretation is correct, individual states cannot simply classify those contracts as gambling and require Kalshi to obtain a sportsbook license.
The Third Circuit Court of Appeals largely agreed in April.
The court upheld an injunction preventing New Jersey regulators from enforcing the state’s sports betting laws against Kalshi, concluding that the CFTC has jurisdiction over the contracts.
That was a major victory for prediction markets because the implications went well beyond New Jersey.
If federal regulation overrides state gambling laws, prediction markets could potentially offer sports contracts across the country without going through the licensing system that traditional sportsbooks have spent years navigating.
Nevada Just Got the Opposite Answer
The situation changed significantly on August 28.
Kalshi has been fighting a similar battle with Nevada regulators, but the Ninth Circuit Court of Appeals reached a very different conclusion.
The court allowed Nevada to enforce its gambling laws against Kalshi, rejecting the argument that federal commodities regulation automatically prevents the state from regulating the company’s sports markets.
That leaves the country with two federal appeals courts looking at essentially the same issue and coming to different conclusions.
In New Jersey, Kalshi has protection from state gambling enforcement. In Nevada, regulators can require the company to follow state gaming laws.
That conflict is one of the biggest reasons the Supreme Court may now be willing to hear the case.
The Supreme Court does not automatically take a case simply because someone files a petition. The justices will first decide whether they want to review it. But conflicting rulings between federal appeals courts are exactly the type of situation where a Supreme Court decision can become necessary.
Why Prediction Markets Have an Advantage Over Sportsbooks
There is a lot more riding on this than whether Kalshi can continue operating in New Jersey.
Traditional sportsbooks operate under a state-by-state system. An operator that wants to take bets in New Jersey needs a New Jersey license. It has to follow the state’s gaming regulations, pay state gambling taxes and comply with rules covering responsible gambling, advertising and who can use the platform.
Prediction markets have built their sports products outside that system.
Kalshi’s position is that it does not need a sportsbook license because it is not a sportsbook. It is a federally regulated financial exchange.
That difference gives prediction markets access to markets traditional sportsbooks cannot reach.
Sports betting is still illegal in several states, while prediction markets have been able to offer sports contracts much more broadly. They can also operate under different age requirements and without paying the same state gaming taxes imposed on licensed sportsbooks.
From the perspective of state regulators, that creates an obvious problem.
A state can spend years creating a regulated sports betting market, establish tax rates and require operators to meet licensing standards, only for another company to offer something that looks very similar to a sports wager while claiming none of those rules apply.
That is ultimately what this court battle is about.
A Supreme Court Decision Could Change the Prediction Market Business
If the Supreme Court eventually sides with New Jersey, it would not necessarily mean prediction markets disappear.
It could mean their sports businesses have to change dramatically.
States could gain much stronger authority to require gaming licenses or prevent sports event contracts from being offered altogether. Kalshi and other prediction markets could find themselves dealing with the same patchwork of state regulations that DraftKings, FanDuel, BetMGM and other sportsbooks already face.
That would remove one of the biggest advantages prediction markets currently have.
It could also create a significant new tax question. States collect billions of dollars from regulated sports betting, and prediction markets offering competing sports products outside that system have become increasingly difficult for gaming regulators and lawmakers to ignore.
A victory for Kalshi would push the industry in the opposite direction.
If the Supreme Court decides federal commodities law prevents states from regulating these contracts, it could effectively establish a separate national path for sports wagering through federally regulated prediction markets.
That would be a major change to the structure of the U.S. gambling market.
This Is Bigger Than Kalshi and New Jersey
Kalshi may be the company named in the case, but the outcome would reach far beyond one platform.
Prediction markets have become one of the fastest growing parts of the broader gambling and trading industry. At the same time, states across the country have challenged the idea that companies can offer sports markets without following their gambling laws.
The legal fights have been piling up because there has never been a clear national answer.
New Jersey now wants the Supreme Court to provide one.
The court still has to decide whether it will hear the case, so nothing changes immediately for players. Kalshi can continue operating under the protection it received in the Third Circuit while the legal process continues.
But the stakes have changed.
What started as individual fights between prediction markets and state gaming regulators has now produced conflicting federal appeals court decisions. If the Supreme Court takes the case, the eventual ruling could determine whether sports prediction markets remain a federally regulated alternative to sportsbooks or become part of the same state-by-state gambling system they have spent years operating outside.
Last Updated: 9 hours ago
