Are prediction markets legal in South Dakota?
2026-10-18
South Dakota allows sports betting only in person in Deadwood and at tribal casinos, and as of October 2026 we found no state action against any prediction market. Kalshi, Polymarket US, Novig, PredictIt and Robinhood are available, and DraftKings and FanDuel offer sports contracts here.
| Platform | Status in South Dakota (October 17, 2026) |
|---|---|
| Kalshi | Available |
| Polymarket US | Available |
| Novig | Available |
| PredictIt | Available |
| Robinhood | Available |
| DraftKings Predictions | Available |
| FanDuel Predicts | Available |
Yes, prediction markets are available in South Dakota. As of October 18, 2026, we found no South Dakota Commission on Gaming, Attorney General or court action against Kalshi, Polymarket US, Novig or PredictIt.
South Dakota’s position
South Dakota allows sports betting only in person. The Commission on Gaming says: “You must be at least 21 years of age for wagering in the casinos in Deadwood and at the tribal casinos.” Sports wagering went live in three Deadwood casinos in September 2021. A 2026 push to let voters approve mobile betting (SJR 504) passed the Senate 23–10 but was defeated in a House committee, per iGaming Business.
Attorney General Marty Jackley signed the October 2026 states’ brief at the US Supreme Court; his office told KELO the issue “is about retaining state regulation of sports gambling.” The Deadwood Gaming Association calls prediction markets “a complete overreach.” We found no South Dakota enforcement. See is Kalshi legal?
What’s available
With no mobile sportsbooks, South Dakota gets the sports products too: DraftKings lists it among its Predictions states and FanDuel lists it in its Predicts offer terms. Kalshi, Polymarket US, Novig, PredictIt and Robinhood are also available. Compare every state in our legality tracker.
Frequently asked questions
Is Kalshi legal in South Dakota?
Kalshi is available in South Dakota. We found no Commission on Gaming or Attorney General action against Kalshi, Polymarket US, Novig or PredictIt as of October 18, 2026.
Is sports betting legal in South Dakota?
Only in person, at Deadwood casinos and tribal casinos, where bettors must be 21. A 2026 resolution to let voters approve mobile betting (SJR 504) passed the Senate but died in a House committee, per iGaming Business.
Can I use DraftKings Predictions or FanDuel Predicts in South Dakota?
Yes. DraftKings lists South Dakota among its Predictions states, and South Dakota is in FanDuel's Predicts offer terms.
Sources
- South Dakota Department of Revenue — Commission on Gaming (21+, Deadwood and tribal casinos)
- South Dakota Commission on Gaming — FY22 annual report (sports wagering launch)
- iGaming Business — South Dakota mobile betting resolution SJR 504 (February 26, 2026, secondary)
- KELO — Deadwood Gaming Association on prediction markets (2026, secondary)
- US Supreme Court — States' amicus brief in Flaherty v. KalshiEX, No. 26-299 (South Dakota signatory, October 2026)
- FanDuel — Predicts new customer offer terms (eligible sports-contract states incl. South Dakota)
Last checked:
Not legal or betting advice. 18+ (21+ where required). Prediction markets involve risk of loss — only trade what you can afford to lose. Gambling problem? Call or text 1-800-MY-RESET (National Problem Gambling Helpline, 24/7).