Washington is the latest state to sue Kalshi, arguing that the business’ contracts — both on sports and other topics — “meet every definition of gambling under state law” and attempting to force it to pay back trader losses.
Washington Attorney General Nicholas W. Brown filed the lawsuit in King County Superior Court Friday.
“Under longstanding, well-established, and unambiguous Washington state law, Kalshi’s gambling operation is illegal,” the complaint said.
Washington defines gambling as “staking or risking something of value upon the outcome of a contest of chance or a future contingent event not under the person’s control or influence, upon an agreement or understanding that the person or someone else will receive something of value in the event of a certain outcome.”
