Sports betting in Washington: sportsbooks and exchanges available
Updated
None of the 6 sportsbooks SlateProof tracks operates in Washington. 2 of the 4 exchanges list sports contracts there (Novig and ProphetX), and 1 of them is contested. That counts the ten venues we track, not every licensed operator.
- Tracked sportsbooks
- 0 of 6
- Tracked exchanges
- 2 of 4
- Contested exchanges
- Novig
- Minimum age
- 18+ to 21+, by venue (see the tables)
- Regulator
- Washington State Gambling Commission
- Availability checked
- October 5, 2026
- Next recheck due
- October 16, 2026
- State facts checked
- October 6, 2026
What does Washington law say about sports betting?
Washington allows sports wagering only at tribal casinos (House Bill 2638, signed March 2020). The sportsbook must be inside a tribe's gaming facility, and mobile wagers need a geofence that limits them to the premises. Source: Washington State Gambling Commission - Sports wagering requirements and rules, checked October 6, 2026.
- Regulator. The Washington State Gambling Commission oversees sports wagering, which state law limits to tribal casinos. It negotiates the sports wagering compact amendments with tribes on the state's behalf. Source: Washington State Gambling Commission - Sports wagering requirements and rules, checked October 6, 2026.
- Minimum age. The Gambling Commission's sports wagering requirements list anyone under 18 as a prohibited participant, so 18 is the state-level minimum age to place a sports wager at a Washington tribal casino. Source: Washington State Gambling Commission - Sports wagering requirements and rules, checked October 6, 2026.
- In-person and tribal rules. The first regulated sportsbook in Washington, run by the Snoqualmie Tribe, opened at 11 a.m. on September 9, 2021. The Gambling Commission had approved 15 tribal sports wagering compacts on June 10, 2021. Source: Washington State Gambling Commission news, 2021, checked October 6, 2026.
From our availability data: No online sportsbooks; Kalshi is blocked by court order.
Which sportsbooks can I use in Washington?
None of the 6 tracked sportsbooks operates in Washington (checked October 5, 2026).
| Sportsbook | Status | Minimum age | What differs in Washington |
|---|---|---|---|
| DraftKings | Not available | n/a | Not listed in our availability data. |
| FanDuel | Not available | n/a | Not listed in our availability data. |
| BetMGM | Not available | n/a | Not listed in our availability data. |
| Fanatics | Not available | n/a | Not listed in our availability data. |
| BetRivers | Not available | n/a | Not listed in our availability data. |
| Hard Rock Bet | Not available | n/a | Not listed in our availability data. |
Are prediction markets and exchanges available in Washington?
2 of the 4 tracked exchanges list sports contracts in Washington, and 1 is contested: a ruling, cease-and-desist or lawsuit is pending. That is not a verdict that they are legal or illegal here.
| Exchange | Status | Minimum age | What differs in Washington |
|---|---|---|---|
| Kalshi | Not available | n/a | Sports contracts are off in Nevada, Michigan and Washington by court order or settlement, and not live in Utah. |
| Polymarket US | Not available | n/a | Left out where sources conflict (Massachusetts, Montana, Tennessee, Utah, Washington). |
| Novig | Contested | 21+ | No state-specific note. |
| ProphetX | Available | 18+ | No state-specific note. |
Status is from our availability data; the dated actions below can be newer.
What courts and officials have done about exchanges in Washington
- In mid-August 2026, a King County Superior Court order in the state attorney general's case required Kalshi to block Washington users from sports, election, politics, entertainment and similar markets, with a full geofence due Sept. 2. The state Court of Appeals declined to pause the order. Source: Washington Attorney General's Office, checked October 6, 2026.
Contested states are due for a recheck by October 16, 2026. See the prediction-markets guide for how exchanges differ from sportsbooks.
Which sign-up offers and promotions apply in Washington?
No tracked sportsbook operates in Washington, so only exchange credits apply.
| Venue | Offer | Ends | Checked |
|---|---|---|---|
| Novig | Novig: deposit $10, get $50 in trade credits (minimum age 21) | No end date stated | October 6, 2026 |
| ProphetX | ProphetX: trade $50, get $75 in incentive funds figures assumed (minimum age 18) | No end date stated | October 6, 2026 |
“Assumed” marks our own typical value. Offers differ by account; the app’s offer counts. See the sign-up offers guide.
What can SlateProof do for you in Washington?
With no tracked sportsbook in Washington, the lane that applies is exchanges-only arbitrage: every leg at a US exchange, 1 pair of the 2 exchanges to scan.
- Sportsbook offers do not apply here; exchange legs need resting depth and carry their own fees.
- Novig is contested here: confirm in the app that you can open and fund an account first.
Choose Washington in “Where you bet”
Where can I get help with gambling in Washington?
Call or text 1-800-MY-RESET (1-800-697-3738), the National Problem Gambling Helpline, or chat at ncpgambling.org.
See also the responsible gambling page.