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Washington AG Sues Kalshi, Alleging Illegal Gambling
The state claims the prediction market platform is actually an unlawful betting outlet targeting young adults.
Mar. 28, 2026 at 12:57am
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The Washington Attorney General's Office has filed a lawsuit against online betting platform Kalshi, accusing the company of violating state law by posing as an illegal gambling outlet despite branding itself as a prediction market. The AG argues Kalshi's platform, which allows bets on sports, world events, and political contests, is aimed at college-age young adults who are more susceptible to gambling addictions.
Why it matters
Washington has banned all forms of internet gambling since 2006, and the state sees Kalshi's operations as skirting those laws. The case raises questions about the boundaries between legal prediction markets and illegal online gambling, as well as concerns over potential insider trading and the protection of vulnerable young adults.
The details
In his lawsuit, Attorney General Nick Brown claims Kalshi's marketing and platform design are deliberately aimed at college students and other young adults, making them more prone to developing gambling addictions. The platform allows anyone 18 and older to place bets on a wide range of topics, including controversial wagers on geopolitical tensions and fluctuations in oil prices.
- The lawsuit was announced by the Washington AG's Office on March 27, 2026.
The players
Nick Brown
The Attorney General of the state of Washington, who filed the lawsuit against Kalshi.
Kalshi
An online betting platform that the Washington AG's Office claims is operating as an illegal gambling outlet, despite branding itself as a prediction market.
What they’re saying
“Kalshi's marketing is aimed at college-age young adults, which makes them more susceptible to gambling addictions later in life.”
— Nick Brown, Attorney General of Washington
What’s next
The lawsuit will now proceed through the state court system, with Kalshi likely to challenge the AG's claims that its platform violates Washington's ban on internet gambling.
The takeaway
This case highlights the ongoing debate over the line between legal prediction markets and illegal online gambling, as well as concerns over the potential exploitation of young adults through addictive betting platforms.
