Ninth Circuit Backs Tribes Against Kalshi Sports Contracts
Appeals court finds California tribes likely to prevail in IGRA challenge to Kalshi event contracts.
The Ninth Circuit Court of Appeals ruled this week that two California tribes are likely to prevail in their claim that Kalshi's sports event contracts violate the Indian Gaming Regulatory Act (IGRA) when offered on tribal land, delivering the prediction markets platform another significant legal setback.
Why It Matters
This ruling tightens the legal walls around Kalshi's expansion strategy in the United States. A finding that sports event contracts fall under IGRA's jurisdiction means prediction market operators cannot simply route offerings through or near tribal territories without tribal consent and federal gaming compliance — a precedent that could constrain the entire event contracts sector, not just Kalshi. For bettors and investors watching the prediction markets space, the decision signals that federal courts are willing to treat these instruments as functionally equivalent to sports wagers, regardless of how platforms classify them. That regulatory framing carries real commercial risk for any operator banking on the contracts-versus-betting distinction as legal cover.
Context
Kalshi secured a landmark legal victory in 2024 when a federal court allowed it to offer sports event contracts after the CFTC attempted to block them, positioning the platform as a pioneer in regulated prediction markets. As of September 2026, per SBC Americas, this week's Ninth Circuit decision represents a compounding series of court losses for the company, specifically around its ability to operate where tribal gaming exclusivity agreements apply. California tribes hold some of the strongest and most legally tested exclusivity rights to sports betting in the country under state compacts.
What's Next
Kalshi must now decide whether to appeal to the full Ninth Circuit or the Supreme Court, or pull back from tribal-adjacent markets while litigation continues. Either path will likely take months and further delay any California market ambitions — gambling always carries risk, and regulatory risk here is acute.
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