Washington Judge Halts Kalshi's Event Contracts, Citing State Gambling Laws

In a major blow to the booming prediction market industry, a Washington state judge has ordered Kalshi to halt its 'event contracts,' ruling they likely violate the state's strict gambling laws and consumer protection statutes. King County Superior Court Judge John McHale granted a preliminary injunction on Monday, agreeing with Washington Attorney General Nick Brown that Kalshi offerings resemble illegal betting more than regulated financial instruments. This decision means the New York-based platform cannot offer its services to Washington residents, marking a significant win for state regulators. The ruling deepens the ongoing nationwide conflict between state authorities, who see these contracts as unlicensed gambling, and platforms like Kalshi, which argue their federally regulated status under the Commodity Futures Trading Commission (CFTC) should prevent state interference. Judge McHale specifically rejected Kalshi argument of federal preemption, a stance upheld by other states including Massachusetts, Michigan, Nevada, and New York, which have also secured court orders restricting Kalshi operations. This stands in contrast to a recent federal appeals court ruling in April that sided with the CFTC, asserting its exclusive jurisdiction over such contracts in New Jersey. With billions traded on these markets, including over $19 billion on the 2026 World Cup alone across Kalshi and its rival Polymarket, the stakes are incredibly high for the future of this innovative but contentious financial sector. Kalshi has publicly stated its disappointment, reiterating its belief that states lack the authority to regulate prediction markets. The specific terms of the injunction are expected to be finalized by August 5, 2026, after both parties submit their proposed language by August 3. This Washington decision is just one battle in a larger legal war, as the CFTC has even filed lawsuits against multiple states for attempting to regulate these markets. Experts suggest this escalating jurisdictional dispute between federal and state powers over event contracts could ultimately require a resolution by the U.S. Supreme Court, leaving the industry's long-term regulatory landscape uncertain.