The NFL is asking the U.S. Supreme Court to settle a growing dispute over who should regulate sports prediction markets, arguing that contracts tied to football games are fundamentally gambling products rather than ordinary financial instruments. The league’s position comes as prediction platforms such as Kalshi expand their presence in sports and compete for activity that has traditionally belonged to state-regulated sportsbooks, giving bettors another option alongside established operators and resources such as the Heritage Sports betting app rating. The dispute could determine whether states can enforce their gambling laws against these markets or whether federal oversight through the Commodity Futures Trading Commission (CFTC) takes priority.
The dispute could determine how companies offering sports prediction contracts operate across the United States. It also puts the NFL on the side of state gambling regulators against prediction-market operators such as Kalshi and Polymarket, which argue that their contracts fall under the federal regulatory authority of the Commodity Futures Trading Commission.
For bettors and industry observers following the fast-moving legal fight, the issue is becoming one of the most important developments in the U.S. betting market because a Supreme Court ruling could affect the boundary between traditional sportsbooks and federally regulated prediction exchanges.
New Jersey’s Case Against Kalshi Reaches The Supreme Court
The case before the Supreme Court is Flaherty v. KalshiEX, LLC, docket number 26-299.
New Jersey filed its petition for a writ of certiorari on September 2, asking the justices to review an April 6 decision from the U.S. Court of Appeals for the Third Circuit. The Supreme Court docket shows that the case was formally docketed on September 8, while Kalshi’s deadline to respond has been extended to November 9.
At the center of the dispute is a basic jurisdictional question: can New Jersey enforce its gambling laws against sports contracts offered by a federally registered prediction-market exchange?
New Jersey regulators argue that sports contracts are effectively sports wagers and therefore belong under state gambling laws. Kalshi maintains that its event contracts are financial products subject to federal oversight under the Commodity Exchange Act.
The distinction has major consequences.
Traditional sportsbooks such as those operating under state gaming licenses must comply with individual state requirements covering licensing, age verification, responsible gambling, market restrictions and the types of bets they can offer.
Prediction-market platforms have pursued a different regulatory model. Their argument is that contracts traded on federally regulated exchanges should be governed primarily by the CFTC rather than by individual state gaming commissions.
The NFL now wants the Supreme Court to resolve that conflict.
The NFL Says Sports Contracts Are Gambling, Not Ordinary Financial Products
The league’s October 8 filing is significant because it comes from the organization whose games generate enormous betting activity across the United States.
The NFL told the Supreme Court that sports-related event contracts create risks that are fundamentally different from ordinary financial derivatives. The league specifically challenged the idea that contracts based on sporting events should automatically receive the same regulatory treatment as traditional financial-market instruments.
The NFL also pointed to the types of contracts now appearing on prediction markets.
These can include contracts on who will win a game, player performances, specific events during games and other outcomes connected to sporting competitions. The league argued that some markets create opportunities for manipulation because an individual player, coach or official could potentially influence a narrowly defined outcome.
That concern is particularly relevant to contracts involving events that may be knowable in advance.
The NFL cited examples including whether the first play of a game will be a run or pass, whether a kicker will miss a field goal and contracts connected to officiating or player and fan conduct. It argued that these markets can create integrity concerns that state sports regulators are better positioned to address.
The league has therefore asked for stronger restrictions on certain categories of sports contracts rather than treating every event contract as an ordinary financial instrument.
$1.8 Billion In NFL-Related Trading Shows Why The Issue Matters
The debate is no longer theoretical.
The Washington Post reported that approximately $1.8 billion of the $3.3 billion traded on prediction markets during the first NFL Sunday of the season involved NFL-related contracts.
That figure illustrates why professional sports leagues are paying close attention to prediction markets.
Prediction platforms can offer contracts that look very similar to familiar sportsbook wagers from a customer’s perspective, even though the legal structure is different. A user can take a position on a sporting outcome, potentially profit if the position is correct and lose money if the outcome moves against it.
From the league’s perspective, the terminology used to describe the transaction does not eliminate the integrity risks associated with sports wagering.
This creates a growing divide between how the industry describes these products and how sports organizations view them.
Prediction-market companies emphasize trading, contracts and financial-market regulation. Sports leagues and state gaming regulators increasingly focus on wagering behavior, consumer protection and the integrity of competitions.
The Supreme Court could ultimately have to decide which framework controls.
The NFL Is Questioning The CFTC’s Ability To Police Sports Markets
The league’s argument also challenges the federal regulatory structure itself.
The NFL said the CFTC does not have the same resources or specialized state-level infrastructure used by gaming regulators to oversee sports betting. Reuters reported that the league believes the federal system lacks important safeguards involving age restrictions, insider betting and other sports-specific protections.
The CFTC has disputed that characterization.
The agency has pointed to cooperation efforts involving the NFL and has said it attempted to work with the league through a memorandum of understanding. The NFL did not sign that agreement, according to Reuters.
The disagreement is important because prediction markets have expanded far beyond the types of contracts traditionally associated with financial exchanges.
The CFTC’s own database currently lists numerous certified event contracts tied to sports. On October 8, for example, the agency’s records included contracts connected to professional football and the League of Legends World Championship. The database also contains contracts covering MLB statistical achievements, college basketball, boxing and other sporting outcomes.
That growing product range is one reason the jurisdictional dispute has become increasingly urgent.
Appeals Courts Have Created A Complicated Legal Landscape
The Supreme Court is being asked to intervene after federal appellate courts reached different conclusions about sports event contracts.
The Third Circuit’s April 6 ruling favored Kalshi’s position in the New Jersey dispute. The decision found that the Commodity Exchange Act could preempt state regulation of the sports contracts at issue.
But later decisions in other federal circuits moved in the opposite direction.
The Sixth Circuit ruled in September that Ohio and Tennessee could regulate certain prediction-market sports contracts under state gambling laws. A separate Ninth Circuit decision also created additional complications for the federal-versus-state jurisdiction debate.
That developing circuit split gives the Supreme Court a strong reason to consider the dispute.
New Jersey’s petition argues that the Third Circuit’s approach could have implications far beyond prediction markets because it could undermine the existing state-based system used to regulate sports wagering.
The concern is straightforward: if a company can offer sports wagers nationwide by registering as a federally regulated prediction-market exchange, traditional state sportsbook licensing systems could face an entirely different competitive environment.
The NFL’s involvement adds considerable weight to that argument.
States Are Rallying Behind New Jersey
New Jersey is not acting alone.
A coalition of states has filed briefs supporting state authority over sports prediction markets. The Associated Press reported that 38 states have sided with New Jersey in the broader dispute, while other reporting has put the number of state attorneys general and participating jurisdictions at 39 states plus Washington, D.C. depending on the filing.
Their shared concern is that state governments have spent years building detailed regulatory systems for sports betting.
The modern U.S. sports-betting market was fundamentally reshaped by the Supreme Court’s 2018 decision striking down the federal Professional and Amateur Sports Protection Act provision that had effectively prohibited most states from authorizing sports wagering.
Since then, states have created individual systems governing sportsbooks, tax rates, licensing, advertising, consumer protections and prohibited wagers.
Prediction markets introduce a potential alternative path into that same market.
If prediction-market operators can offer contracts on professional and college sporting events under federal authority without obtaining state sportsbook licenses, the result could be a two-tier betting industry in which traditional sportsbooks operate under state gaming rules while prediction exchanges operate under federal derivatives rules.
That is precisely the regulatory conflict the Supreme Court is being asked to resolve.
Kalshi And Polymarket Face A Different Kind Of Competition
The legal case also has major implications for Kalshi and Polymarket.
Kalshi has defended the federal model and argues that it operates as a regulated financial exchange rather than a conventional sportsbook. Polymarket has similarly become one of the most visible prediction-market companies in the United States as event contracts have expanded into sports, politics and other categories.
The NFL’s position puts these companies directly opposite one of the most influential organizations in American sports.
The dispute could also affect how prediction markets structure their future sports offerings.
If the Supreme Court ultimately confirms state authority, platforms could face state-by-state licensing requirements, prohibited-market lists and other gambling regulations. If the Court instead confirms broad federal authority, prediction markets could gain a much stronger legal foundation for expanding sports contracts nationwide.
That distinction could influence everything from market availability to advertising, age verification and the types of contracts companies can offer.
The CFTC Is Still Expanding Its Event-Contract Framework
The legal uncertainty is developing at the same time that the federal market itself continues to expand.
CFTC records show new sports-related event contracts being certified during October. Products have included professional football contracts, MLB statistical achievement contracts, college basketball contracts and esports markets.
That means the regulatory question is unfolding while the underlying market continues to grow.
The more sports contracts become available through federally regulated exchanges, the greater the practical consequences of a future court ruling.
The issue also extends beyond football.
Basketball, baseball, hockey, boxing, soccer and esports can all generate event contracts. A Supreme Court ruling focused on NFL markets could therefore establish a legal framework affecting a much broader sports economy.
What The Supreme Court Could Decide
The Supreme Court has not yet agreed to hear the case.
The official docket shows that New Jersey’s petition remains pending, with Kalshi’s response deadline extended to November 9, 2026. The NFL’s amicus brief was filed on October 8 alongside briefs from other organizations and public officials.
That means the immediate question is whether the justices will grant review.
If they do, the eventual ruling could settle whether state gambling laws can apply to sports event contracts traded through federally regulated prediction markets.
A decision favoring New Jersey could strengthen state authority and push prediction-market companies closer to the regulatory framework used by sportsbooks.
A decision favoring Kalshi could reinforce the federal government’s authority and give prediction markets a stronger argument for offering sports contracts across state lines without obtaining individual sportsbook licenses.
There is also a third possibility: the Court could resolve a narrower issue without completely settling every question surrounding prediction markets.
Whatever happens, the case has already changed the industry’s regulatory conversation.
The NFL is now formally telling the nation’s highest court that sports prediction contracts deserve gambling oversight, while prediction-market operators continue to argue that their products belong within the federal financial system.
With billions of dollars already moving through sports-related prediction contracts, the question is no longer whether these markets are part of the U.S. betting economy.
The question is who gets to regulate them.