Regulatory
Class III Gaming
Reviewed by iGaming Times editorial teamLast reviewed 16 October 2026
What is Class III Gaming?
The category of tribal gaming in the United States covering casino games, slot machines and sports betting. It is permitted only under a tribal-state compact or, where a state has failed to negotiate in good faith, under procedures prescribed by the Secretary of the Interior.
Key takeaways
- Class III is the IGRA category covering casino games, slot machines and sports betting, the commercially significant tier of tribal gaming.
- A tribe may offer Class III gaming only under a federally approved compact with the state or, if the state fails to negotiate in good faith, under procedures set by the Secretary of the Interior.
- Because of the compact requirement, tribal gaming disputes often turn on process and exclusivity rather than on the product itself.
Why it matters
The Indian Gaming Regulatory Act divides tribal gaming into three classes. Class I is traditional and ceremonial. Class II covers bingo and certain non-banked card games and may be conducted under tribal and federal oversight without state agreement. Class III is everything commercially significant, and it requires a compact, or procedures prescribed by the Secretary of the Interior where a state will not negotiate in good faith.
That compact requirement is why tribal gaming disputes are so often about process rather than product. A state cannot simply authorise a tribe to offer sports betting; the parties must negotiate, and the resulting agreement must be approved federally. Where a state licenses commercial operators to offer the same product, tribes frequently argue that exclusivity promised in a compact has been breached.
The framework also explains tribal opposition to products that reach consumers without any state licence at all, since a venue operating under a federal financial registration bypasses the compact process entirely while competing directly with it.
The bottom line
Class III is the commercially valuable tier and the one a tribe cannot enter alone. Any product that reaches players without a compact is, to a tribal operator, competition that skipped the queue.
Sources
- 25 U.S. Code § 2710: Tribal gaming ordinances - Legal Information Institute, Cornell Law School
- Blue Lake Rancheria v. Kalshi, Inc., No. 25-7504 (opinion, 16 September 2026) - US Court of Appeals for the Ninth Circuit
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Frequently asked questions
What is Class III gaming?
Class III gaming is the category of tribal gaming in the United States that covers casino games, slot machines and sports betting. The Indian Gaming Regulatory Act of 1988 defines it as all forms of gaming that are not Class I or Class II, and it may be conducted on tribal lands only in conformance with a compact between the tribe and the state or, where a state has failed to negotiate a compact in good faith, under procedures prescribed by the Secretary of the Interior.
What is the difference between Class II and Class III gaming?
Class II covers bingo and certain non-banked card games and may be conducted under tribal regulation with federal oversight from the National Indian Gaming Commission, without any agreement from the state. Class III covers everything else of commercial significance, including banked casino games, slot machines and sports betting, and requires a tribal-state compact that is approved at federal level.
Why do tribes oppose sports event contracts?
A product that reaches players without any state licence, such as a sports event contract listed under a federal financial registration, bypasses the compact process while competing with compact-bound tribal gaming. In September 2026 the Ninth Circuit held that two California tribes were likely to succeed in arguing that Kalshi's sports event contracts are Class III gaming when entered into on their lands.