June 16, 2026
The legal war over prediction markets is spreading fast. In a single stretch of weeks, Kalshi and its rivals have collided with regulators in New York, Kentucky, Nevada and New Mexico — while the federal CFTC sues the states right back, turning a question about sports "event contracts" into a national fight over who gets to police betting.
What started as a niche dispute over whether you can "trade" on the outcome of an NBA playoff game has hardened into one of the biggest jurisdictional brawls in American gambling. Over just a few weeks, prediction market operators — led by Kalshi, alongside Polymarket US and Crypto.com's exchange — have been hit with, or have launched, legal action in New York, Kentucky, Nevada and New Mexico. And in nearly every case, the federal Commodity Futures Trading Commission (CFTC) is stepping in on the operators' side.
Prediction markets say their sports "event contracts" are federally regulated derivatives under the CFTC's exclusive jurisdiction. A growing list of states say that's just sports betting wearing a Wall Street costume — and they want it licensed, taxed, or shut down.
Why the answer is worth billions
The stakes explain the intensity. A company licensed as a derivatives exchange operates nationally under one federal regulator. A sportsbook operates state by state, applying for a licence in each one, paying that state's tax rate, funding its responsible-gambling obligations and accepting its rules on advertising and self-exclusion.
One model costs a single approval. The other costs fifty, plus a tax bill in every jurisdiction. That is the entire commercial logic behind the argument over a definition — and it is why neither side can afford to concede the point quietly.
New Mexico: The State Sues, Then the Feds Sue Back
New Mexico became the newest flashpoint. Attorney General Raúl Torrez filed suit against Kalshi, arguing the company is running illegal online sports betting inside the state by letting residents trade contracts tied to game outcomes.
— Raúl Torrez, New Mexico Attorney General
That reference to tribal compacts is not incidental. In several states, legal gaming exists under negotiated agreements that grant tribal nations exclusivity in exchange for revenue sharing — arrangements that a federally licensed platform operating outside the compact framework would cut straight across.
On June 12, 2026, the CFTC fired back — suing New Mexico itself. It was the agency's eighth lawsuit against a state over prediction markets, joining actions touching Rhode Island, Minnesota, Wisconsin, New York, Arizona, Connecticut and Illinois. New CFTC Chairman Michael Selig framed the state's move as a direct challenge to federal law.
— Michael Selig, CFTC Chairman
New York: Kalshi Goes on the Offensive
In New York, Kalshi didn't wait to be sued. The company filed its own action in the U.S. District Court for the Southern District of New York, arguing that federal authority over derivatives preempts state gambling law. The goal: block New York's enforcement push and keep its sports markets switched on for residents while the courts sort out who's actually in charge.
Filing first is a deliberate tactic rather than a formality. It lets the operator choose the court, frame the question as one of federal preemption from the outset, and seek an injunction that keeps the product live while the case runs — which, in a business measured in active markets and daily volume, is most of the prize.
Nevada: Regulators Want Kalshi Held in Contempt
Nevada has been one of the most aggressive states — and it says Kalshi simply ignored a court order. The Nevada Gaming Control Board asked a state court to hold the company in contempt, pointing to a May 18 preliminary injunction that required Kalshi to stop offering sports, election and entertainment contracts to anyone physically located in the state.
According to the Board, that didn't happen. Investigators say they bought "covered" event contracts on multiple occasions between May 28 and June 1 while sitting inside Nevada — including markets tied to:
- NBA playoff games
- MLB matchups
- Professional tennis matches
- Other sporting and event outcomes
A contempt application changes the nature of the dispute. Everything else on this map is an argument about what the law says; contempt is an allegation about whether a court order was obeyed — and courts tend to treat that question far less abstractly than a jurisdictional one.
Kentucky: A New Tax Triggers an Industry Coalition
Kentucky took a different route — not a ban, but a bill. The state enacted a 14.25% tax on prediction market transaction fees, the first targeted levy of its kind anywhere in the country. For context, that rate sits above Kentucky's 9.75% tax on horse-track wagering, in a state where racing is practically sacred.
Taxing a product is also a quiet way of defining it. A state that successfully collects a gambling-style levy on event contracts has, in practice, categorised them — without ever needing to win the argument about what they are.
The response was a brand-new trade group. The Coalition for Fair Markets — a Virginia-incorporated association whose members include KalshiEX, Crypto.com's Nadex and QCX (Polymarket's regulated U.S. exchange) — sued in Franklin Circuit Court, accusing the state of "dressing regulation as taxation."
— Kalshi
The coalition's complaint argues the tax discriminates against federally regulated markets to shield Kentucky's incumbent gaming industry, reaches beyond the state's borders by taxing residents who trade elsewhere, and violates the dormant Commerce Clause, the First Amendment, equal-protection guarantees and the state constitution's ban on special legislation. Two deadlines loom: restrictions on state-licensed gaming operators doing business with these platforms take effect July 15, while the tax itself kicks in on January 1, 2027.
Why This Matters
Strip away the courtroom jargon and the stakes are simple. If prediction markets win, a CFTC license becomes a national passport to offer something that looks a lot like sports betting — without state sportsbook rules, tax rates or licensing. If the states win, the "event contract" model gets boxed in behind the same compacts and regulations that govern every other form of legal wagering. New York, Kentucky, Nevada and New Mexico are now four parallel test cases, and the rulings stacking up across them will shape how — and where — Americans are allowed to bet on the games they watch.
Four separate courts also means four chances of inconsistent answers, which is the scenario that eventually forces a higher court to settle the question for everyone. Until that happens, the practical position for players is genuinely confusing: the same app may be perfectly legal in one state, restricted in the next, and the subject of a contempt hearing in a third.
This is no longer a one-state skirmish. With the CFTC backing the operators and a widening front of state attorneys general and gaming boards pushing back, the prediction-market question is heading toward a federal-versus-state showdown that could redefine the boundaries of legal gambling in the United States.
