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Washington Judge Sides With State in Latest Kalshi Legal Fight

Another state has scored an early win against Kalshi, adding to the growing list of legal challenges facing prediction markets across the country. A Washington judge granted a preliminary injunction this week, finding the state is likely to succeed in arguing that Kalshi's event contracts violate Washington law. The decision…

Caleb Tallman
Caleb Tallman Editor in chief
07/21/2026
Washington Judge Sides With State in Latest Kalshi Legal Fight

Another state has scored an early win against Kalshi, adding to the growing list of legal challenges facing prediction markets across the country. A Washington judge granted a preliminary injunction this week, finding the state is likely to succeed in arguing that Kalshi's event contracts violate Washington law.

The decision doesn't permanently remove Kalshi from the state, but it does keep the legal pressure building. Over the last several months, we've watched more states test the boundaries between federal and state authority, and Washington is now part of that conversation. Every new ruling makes it a little clearer that the future of prediction markets is going to be shaped in courtrooms just as much as it is by regulators.

Washington Scores Another Court Win

Washington picked up an important early victory this week after King County Superior Court Judge John McHale granted the state's request for a preliminary injunction against Kalshi. The judge said Washington is likely to succeed in arguing that the platform's event contracts violate state gambling laws, allowing the state to move forward while the broader case continues.

What stood out to us wasn't simply that the injunction was granted. McHale also wrote that letting Kalshi continue operating during the lawsuit could harm Washington consumers and that those concerns outweighed the potential impact on the company. A final order laying out exactly how the injunction will be implemented is expected on Aug. 5 after both sides submit additional briefing.

Attorney General Nick Brown called the ruling the first step toward holding Kalshi accountable, arguing the company has been offering contracts on everything from sports and elections to public health issues and natural disasters in violation of state law. It's another reminder that states aren't backing away from these cases. If anything, they're becoming more confident that courts are willing to hear their arguments before the larger federal questions are fully settled.

Kalshi Isn't Backing Away

Kalshi isn't changing its legal strategy because of one unfavorable ruling. The company continues to argue that prediction markets fall under the authority of the Commodity Futures Trading Commission, not individual state gaming regulators. After the decision, Kalshi said states simply don't have the power to regulate federally approved prediction markets and criticized Washington for continuing the lawsuit. 

That position has been central to the company's defense across the country and has already found support in some federal courts, including previous litigation involving New Jersey. Right now, that's what makes these cases so interesting. Courts aren't speaking with one voice, leaving both sides able to point to decisions that support their arguments.

Washington is far from the only state trying to restrict Kalshi. Nevada, Michigan, Massachusetts, and New York have all secured court rulings limiting the company's operations while their own legal disputes continue. Meanwhile, the CFTC has remained aggressive in defending federally regulated prediction markets, filing lawsuits and supporting operators in multiple jurisdictions.

Instead of seeing one national approach emerge, the country is moving toward a patchwork of conflicting court decisions. That creates uncertainty for operators today, but it also increases the chances that higher courts will eventually have to settle the issue.

The Trade Handle Prediction Markets Take

It's easy to look at another injunction and assume prediction markets are losing momentum, but that's not what we're seeing. The legal challenges are becoming more frequent because the industry has become more important, not less.

Washington picked up an early victory, but this case doesn't answer the larger question that sits at the center of nearly every lawsuit: who actually has the final say over prediction markets? Until that question is resolved, expect more rulings like this one from states across the country. The biggest legal decisions for the industry almost certainly still lie ahead.