A King County Judge Just Ordered Kalshi to Stop Taking Sports and Election Bets in Washington by Sept. 2

A King County Superior Court judge has ordered Kalshi, the CFTC-licensed prediction market platform, to stop taking bets from Washington residents on sports, elections, politics, entertainment, culture, technology, science and so-called "mentions" contracts, with full compliance due by September 2. Judge John McHale's final order, issued Thursday, followed a July 21 preliminary injunction and a Wednesday denial from the Washington Court of Appeals of Kalshi's request to pause the ruling while it appeals, according to GeekWire.

Kalshi must build an IP-address and residency-based geofence by August 19 and layer in a stronger, third-party verification system by September 2. Commodities, climate and economics and finance contracts are not covered by the order and can keep running for Washington users. Attorney General Nick Brown, whose office sued Kalshi in March, called the ruling a win for state authority over an industry that has "gotten rich promoting wagers on sports, elections, natural disasters, events related to the Iran War, and more," per his office's news release.

What the New Order Actually Bans

The injunction draws a specific line. Kalshi cannot offer, accept or facilitate Washington wagers on sports outcomes, election and political results, entertainment and culture questions, technology and science predictions, or "mentions" contracts that let users bet on whether a public figure will say a particular word or phrase. The company can continue operating commodities, climate and general economic and financial contracts in the state, which the court did not find covered by Washington's gambling statute.

The two-phase compliance timeline gives Kalshi roughly two weeks to stand up a first-pass geofence based on IP address and stated residency, then another two weeks to layer in a stronger, third-party geolocation tool the state is requiring because IP-based blocking alone is considered easy to spoof with a VPN. McHale's order does not set a specific dollar penalty for the geofencing failure itself, but Nevada, where Kalshi is fighting a parallel ban, has already filed a contempt motion seeking $120,000 a day for continued noncompliance in that state, a figure that gives a sense of the exposure Kalshi is trying to avoid nationally.

Kalshi has not said publicly whether it will appeal further or seek a stay from a higher court before the deadlines hit. Company spokesperson Jacki McGavick said in a statement carried by GeekWire that Kalshi disagrees with the ruling and is "considering all legal" options.

How Washington Built Its Case

The state's argument rests on a straightforward reading of its own gambling law, which Washington amended in 2006 to explicitly prohibit online gambling. State attorneys defined gambling as "staking or risking something of value upon the outcome of a contest of chance or a future contingent event," then argued Kalshi's event contracts fit that description regardless of their federal commodities-exchange label. McHale's ruling leaned heavily on timing: the Washington State Gambling Commission sent Kalshi a notice in December 2025 stating that its event-based contracts were not authorized in the state, and the judge found Kalshi "willfully ignored" it and kept operating anyway.

That willful-ignorance finding matters legally. It is part of why McHale concluded Washington had shown a "well-grounded fear of immediate invasion of consumers' legal rights," the standard needed to justify blocking a company's operations before a full trial on the merits. Brown's office has also invoked the state's Consumer Protection Act alongside the gambling statute, which opens the door to Washington later pursuing restitution or civil penalties tied to the months Kalshi operated in the state after the commission's warning.

The lawsuit itself dates to March, when Brown's office filed suit in King County Superior Court. McHale granted the preliminary injunction on July 21, rejecting Kalshi's argument that federal law preempted the state's authority to act, a decision KUOW reported found the platform had likely run an illegal gambling operation. Thursday's order effectively finalizes that July decision into a standing set of compliance deadlines.

Kalshi's Federal-Preemption Defense Keeps Losing in Seattle

Kalshi's central legal argument is that it does not need state permission to operate anywhere in the country. The company is licensed as a designated contract market by the Commodity Futures Trading Commission, and it has argued in courtrooms nationwide, including Washington's, that this federal oversight preempts any state gambling law that would otherwise apply. McGavick put the company's position bluntly: "States don't have jurisdiction to regulate prediction markets. We're disappointed to see Washington state continue wasting taxpayer dollars."

To press that argument, Kalshi brought in Neal Katyal, a former acting U.S. Solicitor General, and pointed to a favorable ruling it won in New Jersey as precedent that federal law should control. McHale was not persuaded. He found Washington's gambling statute regulates conduct within the state's borders rather than the commodities markets themselves, a distinction that has produced a genuine split across the country: Kalshi has won preemption arguments in some states and lost them in others, including now Washington.

The Wednesday denial of Kalshi's stay request by the Washington Court of Appeals means the company goes into its compliance deadlines without the reprieve it was seeking. Kalshi can still pursue its underlying appeal of the injunction itself, but that process will play out on a slower track than the geofencing deadlines the state is enforcing now.

The Volume and the Harm Washington Cited

Money is a large part of why this fight is happening at all. Kalshi's trading volume reached $23.8 billion in 2025, and more than 90% of that activity, and roughly 89% of the company's revenue, came from sports-related contracts, according to figures reported by the Spokane Spokesman-Review. That concentration is precisely what Washington regulators argue makes Kalshi functionally indistinguishable from a sportsbook wearing a federal exchange license, rather than the diversified financial-hedging tool the company describes itself as in court filings, a framing without the durable, hands-off quality Kalshi has tried to project to regulators.

To support the harm side of its case, Washington pointed to a 2021 state-funded study finding that online gamblers were nearly four times more likely to show signs of problem gambling than patrons of the state's tribal casinos, where in-person supervision and Washington's own regulatory apparatus apply. McHale's order cited evidence that prediction markets share "structural and functional similarities" with online gambling products the state already restricts.

Brown's office also used its filings to catalog the range of contracts Kalshi has offered, a list built specifically to unsettle a Washington audience raised on more traditional betting categories: wagers on the total number of measles cases in a year, what a witness would say during a child-trafficking hearing, and outcomes tied to natural disasters. Framing prediction markets around events that visceral, rather than point spreads, was central to how the state argued these products cross from financial speculation into gambling that needs consumer guardrails.

Tribal Sovereignty and a Five-State Pattern

Washington is not litigating alone, and the fight has a distinctly local angle beyond the courthouse. Sens. Maria Cantwell and Patty Murray joined ten other senators on a letter last month warning that prediction contracts resembling sports bets or casino-style gaming threaten tribal sovereignty and the gaming revenue that funds tribal governments across the state, an issue with outsized weight in Washington given how central tribal gaming compacts are to the state's existing legal gambling framework.

Washington is the fifth state to sue Kalshi, following Massachusetts, Michigan, Nevada and New York. Nevada's ban has been in effect since March 20 and is now the subject of its own $120,000-a-day contempt motion after Kalshi allegedly kept operating there. Arizona tried a different approach, filing criminal charges in March that were permanently blocked by a federal court, a reminder that Kalshi has not lost every round of this fight even as its state losses accumulate.

The CFTC, for its part, has taken the opposite side of the same argument. The federal agency filed a countersuit in April against Arizona, Connecticut and Illinois, arguing those states are the ones overstepping by trying to regulate a federally licensed market. That federal-versus-state split is why Kalshi keeps losing and winning simultaneously in different courthouses: the underlying legal question of who gets to regulate event contracts has not been settled nationally, and Washington's order is one data point in a fight that is likely headed toward a higher court or Congress before it resolves.

What Changes for Washington Bettors Starting This Month

For Washington residents actively using Kalshi, the practical change arrives in two steps. Existing positions in banned categories are not addressed in the public order, so account holders should expect Kalshi's own compliance communications, rather than the court, to spell out what happens to open sports, election or entertainment contracts as the August 19 geofence goes live. Commodities, climate, and economic and financial contracts remain accessible throughout, meaning users are not locked out of the platform entirely, only out of the categories that generated the bulk of Kalshi's national volume.

The bigger open question is enforcement. Washington's order relies on Kalshi building its own geofence rather than the state blocking access at a network level, which is the same setup Nevada is now enforcing with daily fines after alleging Kalshi kept Nevada users online past its own deadline. Whether Washington pursues a similar contempt route if the September 2 deadline slips will be the first real test of how seriously the state intends to enforce a ruling that, for now, exists only on paper.

Kalshi's broader legal fight is far from over. With five states now suing and the CFTC counter-suing three more over the opposite theory, Washington's case is likely to be cited, for or against the state, as similar suits move through courts elsewhere. For now, Washington bettors have a firm date, and Kalshi has two deadlines it says it is still deciding how to fight.