Is Kalshi legal in Washington?

Kalshi’s sports contracts are blocked in Washington. Washington's status on prediction markets: court order in force. Details are on our Kalshi in Washington page.

Is Polymarket legal in Washington?

We found no court order or regulator action stopping Polymarket from serving Washington, as of Oct. 28, 2026. Washington's status on prediction markets: court order in force. Details are on our Polymarket in Washington page.

What is the difference between a sportsbook and a prediction market?

A sportsbook takes the other side of each bet and keeps what bettors lose, under a state license. A prediction market is a federally regulated exchange that matches users with each other and charges a fee, which is why platforms argue state gambling law does not reach them.

Washington · Sports betting

Is sports betting legal in Washington?

Where sportsbooks stand in Washington, where Kalshi, Polymarket and other prediction markets stand, and why the answers differ. Built from our sourced state records.

Reviewed Oct. 21, 2026 · Live figures update with our records · Sources are footnoted

Sportsbooks: Retail onlyKalshi: Sports blocked

The short answer

Only in person. Sports betting only at tribal casinos (including on-premises mobile wagering on tribal land); no statewide online betting.¹

Prediction markets are a separate question, and in Washington Kalshi’s sports contracts are blocked.

Sportsbooks in Washington

Sports betting in Washington is legal in person only. Sports betting only at tribal casinos (including on-premises mobile wagering on tribal land); no statewide online betting.¹ Gaming oversight: Washington State Gambling Commission.

Prediction markets in Washington

Our status for Washington: Court order in force. A court order currently bars at least one CFTC-regulated prediction market from offering some contracts, usually sports, to people in the state. A King County court injunction bars Kalshi from offering sports, election and several other categories of event contracts to Washington users while the state's lawsuit proceeds.

Latest action (Other development, Sept. 23, 2026): The Ninth Circuit stayed Kalshi's appeal of the remand order until rulings in the Nevada case (KalshiEX v. Assad) take effect.²

We track 7 lawsuits involving Washington. Federal appeals from Washington go to the Ninth Circuit, which ruled for the states on Aug. 28, 2026. Full record: prediction market laws in Washington.

Which prediction market apps work in Washington

Prediction market platforms in Washington
Platform	In Washington	Note
Kalshi	Sports blocked	A King County Superior Court order announced August 13, 2026 bars Kalshi from sports, elections, politics, entertainment, culture, tech and science, and mentions contracts in Washington, with geofencing due by September 2, 2026. Commodities, climate, economics and finance contracts remain allowed. Public Gaming reported on August 21, 2026 that Kalshi had messaged Washington users that these categories were no longer tradable there.
Polymarket US	No restriction found
Coinbase	No restriction found	Contracts trade on Kalshi.
Crypto.com	No restriction found	Contracts trade on Crypto.com \| Derivatives North America (North American Derivatives Exchange, Inc.), an affiliated CFTC-registered exchange and clearinghouse; Crypto.com's 2026-09-08 release places this entity under the OG.com spin-off.
DraftKings Predictions	Sports blocked
Fanatics Markets	Not offered	The December 2025 launch release named Washington among the 24 planned states, but Washington is not on Fanatics Markets' current 'Where We're Live' list.
FanDuel Predicts	Offered	Contracts trade on CME Group (financial contracts) and Crypto.com \| Derivatives North America / OG (sports, entertainment and combination contracts).
Gemini Predictions	No restriction found
PrizePicks	Not offered	Contracts trade on Kalshi.
Robinhood	No restriction found	Contracts trade on KalshiEX, ForecastEx and Rothera Exchange and Clearing (a Robinhood joint venture with SIG); since 2026-09-08 also OG.com's North American Derivatives Exchange, Inc..
Underdog	Offered	Contracts trade on Underdog's own exchange UDX (Aristotle Exchange DCM/DCO, Inc. d/b/a Underdog Exchange), plus Kalshi and Nadex (Crypto.com \| Derivatives North America).
Webull	No restriction found	Contracts trade on Kalshi.

“No restriction found” means we know of no court order, regulator action or platform notice stopping it in Washington; it is not a finding that it is legal there.

Why the answers differ

A sportsbook takes the other side of each bet and keeps what bettors lose.³ It needs a license from the state. A prediction market is an exchange that matches users with each other and takes a fee,³ and the large ones are regulated by the CFTC, whose jurisdiction over trading on those exchanges federal law calls exclusive.⁴ That is the platforms’ case for offering sports contracts nationwide; by the 2025 Super Bowl, Kalshi offered them in all 50 states, including states without legal sports betting.⁵

States answer that sports event contracts are sports bets by another name; Massachusetts, for one, says Kalshi’s closely resemble wagers at licensed sportsbooks.⁶ Federal appeals courts have split, 1 for the platforms and 2 for the states, and 3 petitions now ask the Supreme Court to decide: see the circuit split.

Age limits

Kalshi and Polymarket US accept customers from 18,⁷⁸ while most states set the gambling age at 20 or 21, a gap critics including the NCAA have raised.⁹ See how old you have to be. If gambling is causing you harm, call or text 1-800-GAMBLER.

Questions

Is sports betting legal in Washington?: Only in person. Sports betting only at tribal casinos (including on-premises mobile wagering on tribal land); no statewide online betting.
Can you bet on sports online in Washington?: Not with a state-licensed sportsbook. Prediction markets are a separate question, and in Washington Kalshi’s sports contracts are blocked.
Is Kalshi legal in Washington?: Kalshi’s sports contracts are blocked in Washington. Washington's status on prediction markets: court order in force. Details are on our Kalshi in Washington page.
Is Polymarket legal in Washington?: We found no court order or regulator action stopping Polymarket from serving Washington, as of Oct. 28, 2026. Washington's status on prediction markets: court order in force. Details are on our Polymarket in Washington page.
What is the difference between a sportsbook and a prediction market?: A sportsbook takes the other side of each bet and keeps what bettors lose, under a state license. A prediction market is a federally regulated exchange that matches users with each other and charges a fee, which is why platforms argue state gambling law does not reach them.