Washington has officially joined the growing coalition of states taking aggressive legal action against Kalshi. Washington Attorney General Nicholas W. Brown filed a civil lawsuit in the King County Superior Court on Friday, alleging that the prediction market operator is disguising unlicensed internet gambling as a financial exchange.
The state is seeking a permanent injunction to shutter local operations, alongside a demand that Kalshi reimburse Washington traders for all losses incurred on the platform.
Redefining the Prediction Market Argument
The core of the dispute rests on the legal definition of wagering. Washington law defines gambling as placing a valuable stake on the outcome of future contingent events outside of personal control.
Washington Attorney General Brown argues that Kalshi’s event-based contracts, ranging from federal interest rates to the total number of annual measles cases, fit this definition perfectly.
“The company essentially functions like a traditional sportsbook,” Brown stated in the complaint.
Kalshi, however, maintains it is a federally regulated national financial exchange overseen by the Commodity Futures Trading Commission (CFTC). The operator has already moved to transfer the case to federal court, arguing that federal oversight overrides state-level gambling restrictions.
A Nationwide Regulatory Conflict
Washington’s move comes as Kalshi faces over twenty separate civil lawsuits and criminal charges in Arizona related to election wagering. State regulators argue that these platforms bypass critical consumer protection and responsible gaming safeguards.
As the igaming industry watches this legal battle unfold, the ruling in King County could set a definitive precedent for how “prediction markets” are classified domestically, either as innovative financial tools or as illegal, unlicensed betting platforms.
