Preface

Summary: New York State has filed a lawsuit against prediction-market platform Kalshi, alleging the company runs an unlicensed gambling business within the state. The suit, brought by Attorney General Letitia James and announced with Governor Kathy Hochul, contends that Kalshi’s event contracts amount to illegal wagers — spanning sports, elections and cultural events — and that the platform permits underage users to place bets. The complaint asks the court to halt Kalshi’s operations in New York and to require a full accounting of bets, losses and company profits, along with restitution and civil penalties.

Lazy bag

Key takeaways: New York alleges Kalshi offers illegal betting products, seeks triple the platform’s gains, plus $100,000 per unauthorized or attempted wager offer, and demands a detailed accounting of customer activity. The state also claims Kalshi allowed 18–20-year-olds to wager and listed markets involving New York college teams — practices barred for licensed sportsbooks.

Main Body

New York’s Attorney General has launched a legal action against Kalshi, a platform that hosts event-based prediction markets. The lawsuit, filed in New York Supreme Court, asserts that Kalshi’s contracts function as bets and that the company operates without the required gaming license in New York State. The complaint catalogs a range of contract types — including wagers on professional and college sports, political contests and cultural events — and labels them as unlawful under the state’s gambling laws.

The state is seeking broad relief. Officials ask the court to bar Kalshi from conducting an unlicensed gambling business in New York, to demand restitution for affected customers, and to impose civil penalties. Specifically, the suit requests penalties equal to three times Kalshi’s gains related to the alleged unlawful activity and an additional $100,000 for each unauthorized or attempted offer of sports or mobile sports wagering. The Attorney General’s office also seeks a full accounting of customer wagers, losses and the company’s profits tied to those markets.

Attorney General Letitia James emphasized the state’s responsibility to protect minors and reduce gambling-related harm, arguing that prediction markets cannot evade gambling laws by adopting alternative terminology. The complaint alleges that Kalshi permitted users between 18 and 20 years old to place wagers, and that the platform offered markets tied to New York college teams — both practices that licensed sportsbooks in the state are prohibited from facilitating. The Attorney General framed this enforcement action as part of New York’s broader effort to shield young people and vulnerable individuals from unregulated gambling products.

Kalshi and the wider prediction-market sector have faced legal scrutiny nationally. The company had pursued a substantial valuation in a funding round earlier in the year, and the industry has engaged in litigation challenging state restrictions. In one notable example, Kalshi and competitor Polymarket obtained a preliminary injunction in federal court in Minnesota, where the judge found that the state’s ban on prediction markets might conflict with the Commodity Exchange Act. That ruling temporarily blocked enforcement of Minnesota’s restriction while litigation continues.

In New York, regulators previously issued a cease-and-desist order in October through the New York State Gaming Commission, and subsequent efforts by Kalshi to restrain enforcement met with limited success. A federal judge denied Kalshi’s request to block state regulators in early July and declined to issue an injunction pending appeal later that month. The state’s recent lawsuit follows these regulatory steps.

The Attorney General’s statement and the governor’s announcement highlight the penalties the state is pursuing and reiterate the government’s position that prediction markets offering event-based contracts that resemble bets fall within the scope of gambling laws. If the court grants the relief sought, Kalshi would face a ban on operating in New York, financial penalties, and a court-ordered inventory of customer activity and company revenues tied to the contested markets.

Kalshi’s growth has attracted attention: the platform reported user gains tied in part to major sporting events, and media coverage noted significant increases in user counts during the World Cup. Those metrics have underscored the company’s rising profile, even as legal and regulatory challenges multiply across jurisdictions.

At the time the lawsuit was reported, Kalshi had not publicly responded to requests for comment outside regular U.S. business hours. The company’s legal strategy and whether it will seek to contest New York’s allegations in state court remain to be seen.

New York’s action reflects a broader national debate over the legal classification of prediction markets and the appropriate regulatory framework for platforms that facilitate event-based trading. The outcome of this case could influence how such platforms operate in states with strict gambling regulations and may prompt further litigation or regulatory clarifications at both state and federal levels.

Key Insights Table