Can I use Kalshi in Washington?
Washington is the most restricted state for Kalshi. In August 2026 a King County Superior Court judge granted the state a preliminary injunction. From September 2, 2026 Kalshi geofences Washington users out of sports, elections, politics, entertainment, culture, tech and science, and mentions markets.
Economics, weather, financials and crypto markets are not named in the order and stay open. Washington also sits in the Ninth Circuit, the court behind the Nevada ruling against Kalshi.
Which Kalshi markets are open in Washington
- Open: Economics, weather, financials and crypto. These categories are not named in the court order.
- Blocked: Sports, elections, politics, entertainment, culture, tech and science, and mentions.
- Minimum age: 18.
- Federal appeals court: the Ninth Circuit.
Which prediction markets are legal in Washington?
- Kalshi is a CFTC-designated exchange since 2020. You trade in dollars, and withdrawals go to a debit card, bank, PayPal, Venmo or crypto wallet.
- Polymarket US is a separate CFTC-regulated exchange from polymarket.com. Polymarket US publishes no state list. The app checks eligibility at signup.
- polymarket.com rejects new positions from anywhere in the US.
- Gemini Predictions is open to US residents 18 and over. Gemini says availability varies by location and names no state.
Court history for Washington
The rulings and actions shaping Kalshi's status in Washington, oldest first.
- April 2026. The Third Circuit rules 2-1 for Kalshi in New Jersey: sports contracts are swaps under federal law, and federal law overrides state gambling law.
- August 2026. A King County Superior Court judge grants Washington a preliminary injunction against Kalshi.
- August 28, 2026. The Ninth Circuit rules 3-0 for Nevada: Kalshi's sports contracts are gambling under state law, not federally regulated swaps. The ruling binds federal courts across the Ninth Circuit.
- September 2, 2026. Kalshi's geofence on sports, elections, politics, entertainment, culture, tech and science, and mentions takes effect in Washington.
- September 2, 2026. New Jersey asks the US Supreme Court to review the Third Circuit ruling. The two circuits now disagree, the kind of split the Supreme Court exists to settle.
- September 25, 2026. The Sixth Circuit holds that Ohio and Tennessee can regulate Kalshi's sports contracts, joining the Ninth Circuit against Kalshi.
Why states fight Kalshi
Kalshi holds a federal license from the CFTC. Several states say Kalshi's sports contracts are gambling, and gambling belongs to the states. Federal appeals courts split on the question:
- For Kalshi: the Third Circuit, for New Jersey, in April 2026.
- Against Kalshi: the Ninth Circuit for Nevada on August 28, 2026, and the Sixth Circuit for Ohio and Tennessee on September 25, 2026.
- Pending: the Fourth Circuit for Maryland, argued May 7, 2026, and New Jersey's petition to the Supreme Court, filed September 2, 2026.
A split between circuits is the classic path to the Supreme Court. Until then, your access depends on where you live and on any court order in your state.
What to watch next in Washington
- The preliminary injunction is not a final ruling. A trial or an appeal decides whether the blocked categories stay blocked.
- Whether the Supreme Court takes New Jersey's petition. A ruling there settles the question for every state at once.
How to confirm your own access
- Open the Kalshi app and sign up or sign in. Kalshi checks your location and residence.
- Open a market in the category you want. The app shows whether your account trades the market.
- For Polymarket US and Gemini, the signup flow confirms eligibility for your state.
- Check this page again after big court dates. Rivo rechecks every state page monthly.
Trade Kalshi from Washington with Rivo
Rivo connects to your own Kalshi account through an API key. Rivo never gets around a geofence: a market Kalshi blocks for your account stays blocked in Rivo. What you get on top:
For other states and countries, use the prediction market location checker. How Kalshi is regulated is covered in is Kalshi legit, and the two Polymarket products in is Polymarket legal in the US.
Frequently asked questions
Is Kalshi legal in Washington?
Partly. Kalshi operates in Washington, but a court order makes it block some categories of markets there. A King County court order made Kalshi geofence sports, elections, politics, entertainment, culture, tech and science, and mentions markets from September 2, 2026. Other categories such as economics, weather and crypto remain.
Is Polymarket legal in Washington?
Polymarket US: Open to US residents, verified in the Polymarket US app. Polymarket US publishes no state list, so the app has the final say. polymarket.com: polymarket.com does not accept new positions from the United States. US residents use Polymarket US instead.
How old do you have to be to use Kalshi in Washington?
18. Kalshi's help center sets 18 as the minimum, and the Member Agreement requires the age of majority in your state, which is 18 here.
Does a VPN get around a Kalshi or Polymarket block?
No. Polymarket blocks restricted locations and its terms forbid VPN use. Kalshi verifies identity and residence, and the Michigan court order requires a licensed geolocation check.
Why can't I bet on sports with Kalshi in Washington?
A King County Superior Court order. From September 2, 2026 Kalshi geofences Washington users out of sports, elections, politics, entertainment, culture, tech and science, and mentions markets.
What can I still trade on Kalshi in Washington?
Economics, weather, financials and crypto markets. The court order does not name those categories.
Is Kalshi banned in Washington state?
No. Kalshi still operates in Washington with most categories blocked. Fed rates, inflation, weather, stock index and crypto markets stay open.
Is Polymarket legal in Washington state?
Polymarket US accepts Washington residents after an identity check in its app, and publishes no state exclusion list. polymarket.com does not accept new positions from the US.
Updated September 27, 2026. Not legal advice. Rules change, and the venue's app has the final say.