Is Kalshi Legal in Washington? (2026 Update)

TL;DR

• Kalshi still operates in Washington, but not fully. A King County Superior Court injunction, entered in August 2026, requires Kalshi to block Washington users from sports, election, politics, entertainment, culture, tech and science, and "mention" contracts.
• Commodities, climate, economics, and finance contracts remain available, and the order is preliminary, not a final judgment on the merits.
• The case was brought by Washington Attorney General Nick Brown under state gambling and consumer protection law. Kalshi argues federal law gives the CFTC exclusive jurisdiction, and Washington's courts have so far rejected that, including a denied stay and a denied reconsideration request.
• Federal appeals courts are split on the underlying question, and multiple petitions asking the Supreme Court to decide it are pending.

Searched "is Kalshi legal in Washington" and found headlines that don't agree with each other? That's because the answer changed over the summer. Kalshi isn't banned in Washington, and you can still use it. But a significant share of its markets are no longer available to people located in the state. Legal status can change quickly, so treat any prediction market data you see as separate from whether you can trade a contract.

This isn't legal advice, and the court case is moving quickly. If you're reading this more than a few weeks after it was published, check the latest status before relying on any of it.

Is Kalshi Legal in Washington Right Now?

Partly. Kalshi is a CFTC-regulated Designated Contract Market, and Washington residents can still trade its economics, finance, commodities, and climate contracts. A state court order bars Kalshi from offering most other categories to anyone located in Washington.

That's a bigger restriction than "a specific slice of sports contracts," which is how the dispute was often described earlier in 2026. The August order covers sports, elections, politics, entertainment, culture, technology and science, and "mention" markets, and it also covers advertising those contracts. The state's own spokesperson described it this way: it "does not include all the wagers offered on Kalshi, but it includes a substantial part of their business."

What Is Washington's Case Against Kalshi?

Washington's Gambling Commission said in December 2025 that offering or participating in event-based contracts "is not authorized in Washington State." That notice wasn't aimed only at Kalshi. It covered event contracts generally.

In late March 2026, Attorney General Nick Brown sued Kalshi in King County Superior Court. The complaint alleges violations of the Washington Gambling Act and the Consumer Protection Act. Washington has prohibited internet gambling since a 2006 amendment to its 1973 Gambling Act, and the state's argument is that Kalshi's event contracts fit the statutory definition of gambling: staking something of value on a future contingent event.

Here is how the case has moved:

Judge McHale wrote that Kalshi "willfully ignored" the Commission's December notice. Kalshi's position is that it is "regulated by the CFTC, which has exclusive jurisdiction over our exchange," and it said it respectfully disagrees with the decision and is considering all legal options.

Which Kalshi Contracts Are Blocked in Washington, and Which Still Work?

The order draws a line by category, not by topic sensitivity or trader intent. Based on press coverage of the order, here's how it breaks down.

Blocked for users located in Washington:

• Sports
• Elections and politics
• Entertainment and culture
• Technology and science
• "Mention" markets

Still available:

• Economics, including data releases and Fed decisions
• Finance
• Commodities
• Climate

That last point matters for anyone who came to Kalshi for macro trading. Contracts on economic data and Fed decisions are outside the order. Political outcomes are not, which is a change from how this was described earlier in the year.

According to DeFi Rate, users can still close out existing positions in restricted categories. The order's geofencing requirement is designed to prevent anyone physically located in Washington from purchasing a restricted contract, so a Washington address is not the only test. Location is.

Why Does Kalshi Say Washington Can't Do This?

Kalshi's core argument hasn't changed. The Commodity Exchange Act gives the CFTC exclusive jurisdiction over swaps traded on a federally designated exchange, and Kalshi says that preempts state gambling law for the contracts it lists. On that view, a contract on a game's outcome is no different in kind from a contract on a CPI print.

Washington's response is that state gambling law applies regardless of federal registration, and that sports and election contracts are bets under the state's definition. Judge McHale found the state likely to succeed on that theory. He also found that Washington consumers would face "substantial injury" without an injunction.

Kalshi has also made a separate argument in a letter to the Gambling Commission: that Washington has applied the law selectively, since the attorney general has not taken action against other prediction market operators. The attorney general's office called that claim "not true at all," and said it doesn't have to pursue every potentially violating company at once to win a judgment against one. A spokesperson described Kalshi as "the largest entity of its kind."

Where Does the Federal Court Fight Stand?

Washington's case is in state court, so federal appeals rulings don't directly control it. But they address the same preemption question Kalshi raises as its defense, and they have been trending against it.

The federal picture, as of this writing:

Washington sits in the Ninth Circuit, which also ruled against Kalshi in the tribal gaming case covered in our California breakdown. The Third Circuit's contrary ruling created a split that New Jersey, Robinhood, and Crypto.com have asked the Supreme Court to resolve. Kalshi has separately asked the full Ninth Circuit to rehear the Nevada decision, and according to one report it has done the same in the Sixth Circuit.

As of this writing, I found no report of the Supreme Court acting on any of those petitions. Until it does, Kalshi's sports contracts face different legal treatment depending on the state and the circuit. For the broader backdrop, see our guide to prediction market regulation.

Does Washington Treat Other Prediction Markets Differently?

This is where the record gets thin. The Gambling Commission's December notice isn't specific to Kalshi, but the lawsuit and injunction are. I found no court order against any other prediction market operator in Washington.

An affiliate of Crypto.com's exchange sued Washington officials in federal court and reached a stipulation with the state on August 18, 2026, though the terms of that agreement aren't public in the sources I could review. Kalshi cited it when asking the court to reconsider, and the request was denied. Kalshi's lawyers have said the state hasn't acted against Polymarket either, which the attorney general's office disputes in general terms.

Here's how the five platforms PredictionHero tracks compare on Washington specifically.

The difference worth understanding is structural. Kalshi is the only one of the five that is a federally designated exchange, which is why it argues federal preemption in court and why it's the platform most visible to state regulators. The on-chain platforms don't claim that shield, and "no action found" is not the same as "approved." The Commission's December notice says event contracts generally aren't authorized in the state, so a lack of enforcement against one platform doesn't tell you it's safe or lawful to use.

Each platform also carries its own tradeoffs around custody, dispute resolution, and consumer protection. Our US-regulated exchanges guide lays out where those lines fall.

What Does This Mean If You Live in Washington?

If you trade economics, finance, commodities, or climate contracts on Kalshi, nothing about your access has changed. If you came for sports, elections, or politics, you'll find those categories blocked while you're in Washington, and Kalshi uses location data rather than just your account address to enforce that. Either way, check what is currently listed on the board before you rely on any prediction market data.

The order is a preliminary injunction. That means it stays in place while the case continues, but it isn't the court's final word on whether Kalshi violated Washington law. Kalshi can still pursue appeals, and the federal split could change the legal landscape if the Supreme Court steps in.

The honest framing is that the dispute is no longer about one narrow product category. It's about whether a state can enforce its gambling law against a CFTC-registered exchange, and Washington's courts have so far said yes. A lawyer licensed in Washington is the right call for a specific compliance concern, not an article.

Sources

• Washington State Attorney General's Office. "Judge finds Kalshi's online gambling likely violates state law." July 21, 2026. atg.wa.gov
• Spokesman-Review. "Kalshi ordered to block wagers on sports, politics in Washington." August 13, 2026. spokesman.com
• Spokesman-Review. "Kalshi claims 'selective-nonenforcement' in Washington as federal court finds states can regulate prediction markets." August 31, 2026. spokesman.com
• Spokesman-Review. "King County judge rules Kalshi likely violates state gambling laws." July 21, 2026. spokesman.com
• Idaho Capital Sun / Washington State Standard. "Kalshi ordered to sharply curtail operations in WA." August 13, 2026. idahocapitalsun.com
• DeFi Rate. "Washington Prediction Apps and Sites: Legal Trading in 2026." defirate.com
• Ticker Tracker. "State of Washington v. KalshiEX LLC" case timeline. ticker-tracker.com
• Holland & Knight. "Ninth Circuit Upholds State and Tribal Authority Over Sports-Related Event Contracts." August 2026. hklaw.com
• DeFi Rate. "Sixth Circuit Rules Against Kalshi, Lets Ohio and Tennessee Enforce Sports Betting Laws." defirate.com
• DeFi Rate. "Kalshi Seeks Ninth Circuit Rehearing as Robinhood Takes Nevada Prediction Market Fight to Supreme Court." defirate.com

PredictionHero aggregates publicly available prediction market data for informational purposes only. This is not financial or legal advice. Prediction markets may not be available in all jurisdictions, and legal status can change; verify current status before relying on it, especially for an active court case like the one described here.