Arizona’s Attorney General has filed criminal charges against the prediction market platform Kalshi, accusing it of operating an unlicensed gambling business and facilitating illegal bets on elections. This marks the first time the company has faced criminal prosecution, escalating a dispute over state regulators’ authority to oversee such platforms.
Key Takeaways
- Arizona has filed criminal charges against Kalshi for operating an illegal gambling business and taking bets on elections.
- This is the first criminal case brought against Kalshi, though other states have previously alleged illegal operations.
- Kalshi argues its contracts are regulated by the CFTC and pre-empt state laws, while Arizona contends election betting violates state law.
Legal Battle Intensifies
Arizona Attorney General Kris Mayes stated that Kalshi, despite branding itself as a "prediction market," is essentially running an illegal gambling operation and accepting bets on Arizona elections, both of which contravene state law. This action is the first criminal charge against Kalshi in the US, though other states have previously issued cease-and-desist letters, alleging the platform operates as an unlicensed sportsbook.
Daniel Wallach, a gaming law specialist, anticipates a potential "domino effect," suggesting these criminal charges may not be the last filed against the company.
Kalshi’s Defence and Business Model
Kalshi has responded by stating that "a state can file criminal charges on paper-thin arguments" and that states are attempting to regulate a nationwide financial exchange through "every trick in the book." The company contends that its business is distinct from sportsbooks and casinos and should not be subject to a "patchwork of inconsistent state laws."
Prediction market platforms like Kalshi offer shares in binary outcomes of various events. Kalshi asserts that these contracts should be regulated as derivatives by the federal Commodity Futures Trading Commission (CFTC), thereby bypassing state-level gambling bans and regulations. The CFTC, under the Trump administration, has previously supported Kalshi in litigation against states.
Election Betting and Sports Markets
The charges filed by Mayes’s office in Maricopa County Superior Court include 20 counts. Prosecutors allege Kalshi violated Arizona law by accepting bets from residents on professional and college sports, as well as on specific elections. These include the 2028 US presidential race, the 2026 Arizona gubernatorial race, the 2026 Arizona Republican gubernatorial primary, and the 2026 Arizona secretary of state race. Gambling on elections is explicitly illegal under Arizona state law.
While election markets are part of the accusations, sports markets constitute the bulk of Kalshi’s business, accounting for approximately 90 per cent of its trading volume and collected fees. Trading on Kalshi’s Super Bowl markets alone exceeded $1 billion last month, with sports gambling generating an estimated $1.3 billion in annualised revenue for the company.
Precedent and Future Outlook
Several states have previously sent Kalshi cease-and-desist letters, arguing it operates as an illegal sportsbook. In February, a Massachusetts judge prohibited Kalshi from offering sports markets in that state on public health and safety grounds.
The recent charges follow Kalshi’s lawsuit against Arizona’s gaming regulator, seeking an injunction against future enforcement actions. Mayes accused Kalshi of "suing states rather than following their laws."
Courts have adopted varied approaches to Kalshi’s attempts to secure injunctions. The ultimate decision on whether federal regulation of event contracts pre-empts state gambling laws may rest with the US Supreme Court. Analysts suggest the Supreme Court is likely to favour states on sports betting, as it has historically been a state-regulated product, though other event contracts might survive legal scrutiny.

