Arizona Charges Kalshi With Unlicensed Gambling as Prediction-Market Legal Battle Escalates

Kalshi and Polymarket allow users to trade contracts tied to game outcomes, point spreads and player statistics. The dispute centers on whether these products are derivatives subject exclusively to oversight by the U.S. Commodity Futures Trading Commission, or must also comply with state gambling laws. Kentucky separately enacted legislation in April 2026 imposing a 14.25% tax on platform trading fees, above the 9.75% rate on racetrack wagers.

On June 17, 2026, Kentucky Attorney General Russell Coleman sued Kalshi, Polymarket and their partners Coinbase, Robinhood and Webull in Franklin Circuit Court, alleging that they offered sports betting without licenses and failed to provide support for problem gambling. The state described the two platforms as multibillion-dollar businesses. The case puts the Trump administration, which supports exclusive federal oversight, in direct conflict with a Republican-led state government.

Prediction markets allow users to trade contracts on election, economic or sports outcomes. Operators including Kalshi and Polymarket argue that their products are derivatives regulated by the CFTC, while states view proposition wagers as gambling, creating a jurisdictional clash between federal commodities law and state gaming laws.

The Utah Legislature passed HB243 in 2026, classifying proposition wagers on event outcomes as illegal gambling and barring operators from offering sports-betting-like prediction services in the state. Governor Spencer Cox has said he will sign the bill, exposing Kalshi and Polymarket to the risk of being blocked and facing enforcement action.