The Tribal Gaming Legal Guide

1. Executive summary

Tribal gaming is not simply "Native American casinos." It is a sovereign economic activity, exercised by federally recognized tribal nations in the United States and First Nations in Canada, operating within a legal framework that recognizes tribes as governments — not businesses. The correct mental model is not "is gambling legal?" but "what has the tribal government, as a sovereign, chosen to permit on its own lands, within the bounds of the framework Congress enacted in 1988?"

In the United States, the controlling statute is the Indian Gaming Regulatory Act (IGRA), 25 U.S.C. §§ 2701–2721, enacted October 17, 1988. IGRA divides tribal gaming into three classes, assigns regulatory authority differently to each, and requires a negotiated compact with the state only for the most commercial category (Class III). In Canada, the legal foundation is entirely different: section 207 of the Criminal Code creates a narrow exemption allowing provinces — and, by agreement, First Nations operators within a province — to conduct and manage lottery schemes.

2. The sovereignty foundation

Tribal nations are pre-constitutional sovereigns. The legal doctrine governing their status in the United States derives from the Marshall Trilogy — Johnson v. M'Intosh (1823), Cherokee Nation v. Georgia (1831), and Worcester v. Georgia (1832) — which established that tribes are "domestic dependent nations" retaining inherent sovereign authority not expressly abrogated by treaty or Congress.

This matters for gaming because the right to regulate activity on tribal lands is not granted by federal law; it is an inherent attribute of sovereignty that IGRA regulates, limits, and protects — but did not create. The Supreme Court's 1987 decision in California v. Cabazon Band of Mission Indians made this explicit: a state whose public policy permitted gambling (even bingo) could not apply its regulatory statutes to tribal gaming absent congressional authorization. Congress responded with IGRA the following year.

In Canada, First Nations sovereignty has a different constitutional anchor — section 35 of the Constitution Act, 1982 recognizes and affirms existing Aboriginal and treaty rights — but the practical gaming framework is less sovereignty-based and more delegation-based, because the Criminal Code exemption runs to provinces, not First Nations directly.

3. IGRA — what the statute actually says

The Indian Gaming Regulatory Act is a compact piece of legislation (37 pages in the U.S. Code) with outsized consequences. Its stated purposes, at § 2702, are threefold: (1) to provide a statutory basis for the operation of gaming by tribes as a means of promoting tribal economic development, self-sufficiency, and strong tribal governments; (2) to provide a framework to shield tribes from organized crime and other corrupting influences; and (3) to establish the federal regulatory authority, standards, and the National Indian Gaming Commission.

IGRA created three categories — Class I, II, and III — with sharply different regulatory architectures.

4. Class I gaming

Class I gaming means social games played solely for prizes of minimal value, and traditional forms of Indian gaming engaged in by individuals as a part of, or in connection with, tribal ceremonies or celebrations. It is exclusively within tribal jurisdiction, is not subject to IGRA's regulatory provisions, and is not regulated by the NIGC. In practice, Class I is not a commercial category.

5. Class II gaming

Class II gaming is primarily the game of bingo — whether or not electronic, computer, or other technologic aids are used — and non-banked card games that are explicitly authorized, or not explicitly prohibited, by the law of the state in which the tribal land is located.

The "technologic aid" language has enormous commercial significance. Federal courts have consistently held that electronic bingo machines — devices that look and feel like slot machines but whose underlying game is a centrally determined bingo draw linking multiple players — are Class II devices, not Class III slots. This is what permits tribes in states without Class III compacts (or with narrow ones) to operate gaming floors that resemble, to the casual visitor, Class III casinos.

Class II gaming requires a tribal ordinance approved by the NIGC chair, licensure of primary management officials and key employees, an annual independent audit, and compliance with the NIGC's Minimum Internal Control Standards (MICS). It does not require a compact with the state.

6. Class III gaming & compacts

Class III is the residual category: everything that is not Class I or Class II. It includes slot machines (in the traditional sense), banked card games such as blackjack and baccarat, table games like craps and roulette, pari-mutuel wagering, and — as courts have now confirmed — sports betting. Class III is the commercial heart of tribal gaming and accounts for the large majority of tribal GGR.

Three conditions must be met before a tribe may conduct Class III gaming:

1. The tribe must adopt an ordinance authorizing the gaming, approved by the NIGC chair.
2. The gaming must be located in a state that permits such gaming for any purpose by any person, organization, or entity (the so-called "permitted-in-the-state" test from § 2710(d)(1)(B)).
3. The gaming must be conducted in conformance with a tribal-state compact entered into between the tribe and the state that has been approved by the Secretary of the Interior.

The compact is a negotiated government-to-government agreement covering the scope of games, regulatory standards, licensing, dispute resolution, duration, renewal, and — in most modern compacts — revenue sharing with the state in exchange for exclusivity.

IGRA originally required the state to negotiate in good faith and allowed a tribe to sue the state in federal court if it did not. The Supreme Court's 1996 decision in Seminole Tribe of Florida v. Florida held that Congress lacked authority to abrogate state sovereign immunity under the Indian Commerce Clause, effectively eliminating the federal court remedy. The Department of the Interior has since developed "Secretarial procedures" as a partial backstop when negotiations stall.

7. Who regulates what

Tribal gaming is regulated at three levels simultaneously: the tribal gaming regulatory authority (TGRA), the federal government, and, for Class III, the state.

• Tribal Gaming Regulatory Authorities (TGRAs) — every operating tribe has one — are the day-to-day regulators. They license employees and vendors, audit operations, and enforce the tribal gaming ordinance. TGRAs are government bodies distinct from the casino operating entity.
• National Indian Gaming Commission (NIGC), created by IGRA, is an independent federal regulator within the Department of the Interior. It approves tribal gaming ordinances, promulgates MICS, conducts audits, and can issue notices of violation and civil fines.
• Department of the Interior, Bureau of Indian Affairs approves tribal-state compacts (through the Secretary) and per capita distribution plans, and determines whether newly acquired lands are "gaming-eligible" under the Indian Gaming Regulatory Act's Section 20 framework.
• State gaming agencies exercise only the regulatory authority the state negotiated into the compact, which varies widely — from near-zero (most California tribes) to heavy (Connecticut, where state police conduct surveillance).
• FinCEN and the IRS also have jurisdiction — tribal casinos are Title 31 financial institutions subject to Bank Secrecy Act reporting, including CTRs and SARs.

8. Sports betting

The Professional and Amateur Sports Protection Act (PASPA) of 1992 was struck down by the Supreme Court in Murphy v. NCAA (2018), opening the door for states — and tribes — to authorize sports wagering. Because sports betting is Class III, tribes generally need a compact amendment or new compact before offering it.

The post-Murphy landscape has produced at least four distinct tribal approaches:

• On-reservation only: Most tribes with sports books operate at physical locations on tribal lands, under straightforward compact amendments (e.g., Mississippi, Michigan, Arizona for tribal-branded books).
• Statewide mobile via "hub and spoke": The 2021 Seminole Tribe compact with Florida deemed all wagers placed anywhere in the state to occur on tribal lands if routed through servers located on tribal lands. This approach survived federal court scrutiny in West Flagler Associates v. Haaland (D.C. Circuit, 2023), and the Supreme Court denied certiorari in 2024.
• Tribal exclusivity with state-licensed commercial operators: Arizona, Connecticut, and Michigan have hybrid models where tribes and commercial operators both hold mobile licenses, with revenue sharing that preserves tribal exclusivity values.
• Tribal opt-out of mobile: California tribes collectively defeated two 2022 ballot propositions that would have authorized statewide mobile betting without tribal exclusivity. The question remains open; a tribally drafted 2026 ballot measure is expected.

9. Online & iGaming

Online casino gaming — slots, table games, and live-dealer products delivered to a player's phone — is Class III and requires both (i) state authorization for online gaming generally and (ii) a compact provision permitting the tribe to offer it. As of early 2026, only a handful of U.S. states have authorized online casino: Connecticut, Delaware, Michigan, New Jersey, Nevada (poker-only), Pennsylvania, Rhode Island, and West Virginia. Of these, only Connecticut and Michigan offer tribally operated online casino under compact amendments.

The most closely watched development is the potential extension of the Seminole "hub-and-spoke" theory from sports betting to online casino. The legal architecture is similar; the political and commercial stakes are significantly larger.

10. Revenue sharing & use of proceeds

IGRA § 2710(b)(2)(B) requires that net revenues from tribal gaming be used only for five specified purposes: (i) to fund tribal government operations or programs; (ii) to provide for the general welfare of the tribe and its members; (iii) to promote tribal economic development; (iv) to donate to charitable organizations; or (v) to help fund operations of local government agencies.

Per capita distributions to tribal members are permitted only if the tribe has adopted a Revenue Allocation Plan approved by the Secretary of the Interior. RAPs must reserve adequate revenue for government operations and economic development before any per capita distribution.

State revenue sharing, while not required by IGRA, is nearly universal in modern Class III compacts. The legal basis is that the state has provided the tribe a benefit — typically, exclusivity — for which it may receive consideration. The Department of the Interior has signaled that it will disapprove compacts whose revenue sharing is not supported by "meaningful concessions" from the state.

11. State-by-state permitted-activity table

The table below summarizes the high-level posture of the most significant U.S. gaming jurisdictions. It is a starting point, not a substitute for reviewing the actual compact in each state.

The 29 U.S. states with operating tribal gaming are: Alabama, Alaska, Arizona, California, Colorado, Connecticut, Florida, Idaho, Iowa, Kansas, Louisiana, Michigan, Minnesota, Mississippi, Montana, Nebraska, Nevada, New Mexico, New York, North Carolina, North Dakota, Oklahoma, Oregon, South Dakota, Texas (limited), Washington, Wisconsin, and Wyoming. Complete property-level coverage is in our Directory.

12. Canada: the Criminal Code framework

Canadian gaming law begins and ends with the federal Criminal Code. Section 201 prohibits keeping a common gaming house. Section 206 prohibits lotteries. But section 207 exempts provincial governments — and entities to which provincial governments delegate authority — from those prohibitions, provided the gaming is a "lottery scheme" conducted and managed by the province.

Because section 207 runs to provinces, not to First Nations directly, First Nations gaming in Canada operates under provincial framework agreements. The most developed examples:

• Saskatchewan. The 1995 Gaming Framework Agreement established the Saskatchewan Indian Gaming Authority (SIGA) — a nonprofit entity owned by 74 First Nations — as the operator of on-reserve casinos, with revenue sharing between SIGA, the First Nations Trust, and the provincial Crown. This is widely regarded as the strongest First Nations model in Canada.
• Ontario. Casino Rama, on the Rama First Nation reserve, opened in 1996 as the province's first "First Nations commitment." Revenue from Casino Rama has historically been shared among all 133 Ontario First Nations through the Ontario First Nations Limited Partnership.
• British Columbia. The St. Eugene Resort Casino (Ktunaxa Nation) and the Chances Chilliwack (Squiala First Nation) operate under BC Lottery Corporation's "casinos of British Columbia" framework with revenue sharing to First Nations.
• Alberta. Alberta Gaming, Liquor and Cannabis (AGLC) licenses First Nations casinos including Grey Eagle (Tsuut'ina), Eagle River (Alexis Nakota Sioux), and River Cree (Enoch Cree).
• Manitoba. Manitoba Liquor and Lotteries operates casinos jointly with First Nations, including the Aseneskak Casino (Opaskwayak Cree) and Sand Hills Casino (Swan Lake First Nation).

Online gaming in Canada now operates primarily through provincial "iGaming" platforms (PlayNow in British Columbia, Manitoba, and Saskatchewan; OLG.ca in Ontario) and, since April 2022, licensed private operators in Ontario under iGaming Ontario. First Nations participation in online gaming revenue has emerged as a significant policy question; the Mohawk Council of Kahnawà:ke's longstanding Kahnawake Gaming Commission licenses many international online operators and predates the current provincial frameworks.

13. By the numbers

Primary sources: NIGC 2024 Gross Gaming Revenue Report; Canadian Gaming Association 2024 Economic Impact Study; American Gaming Association / NIGA 2025 joint report. Full citations in § 15.

14. Frequently asked questions

Do tribes pay federal taxes on gaming revenue?

Tribal governments, like state and local governments, are not subject to federal income tax on their governmental revenues, which includes net gaming revenue. Individual tribal members pay federal income tax on per capita distributions they receive. Tribal gaming employees pay ordinary federal, state (where applicable), and FICA taxes on their wages.

Can a state ever just ban tribal gaming?

Not directly. Under IGRA, a state's ability to limit tribal Class III gaming is tied to what the state authorizes for any purpose. If a state permits charitable Las Vegas nights, for example, Cabazon and IGRA together mean it likely cannot block a tribe from offering similar banked games. The practical friction point is compact negotiation, not prohibition.

What is "Section 20"?

Section 20 of IGRA (25 U.S.C. § 2719) generally prohibits gaming on lands acquired in trust for a tribe after October 17, 1988, subject to enumerated exceptions — including the two-part determination (Secretary + governor concurrence), the settlement-of-a-land-claim exception, the initial-reservation exception, and the restored-lands exception. Off-reservation gaming proposals routinely turn on Section 20 analysis.

Are tribes subject to the Bank Secrecy Act?

Yes. Tribal casinos meeting the $1 million gross annual gaming revenue threshold are "financial institutions" under 31 U.S.C. § 5312 and must file currency transaction reports (CTRs) and suspicious activity reports (SARs), maintain an AML program, and comply with FinCEN guidance.

Can a non-tribal company own part of a tribal casino?

Not in the U.S. — IGRA requires that the tribe have the "sole proprietary interest and responsibility" for the gaming activity. Management contracts with non-tribal companies are permitted, must be approved by the NIGC chair, are capped at 30% of net revenues (40% in limited circumstances), and cannot exceed seven-year terms (up to ten with approval). The tribe must remain the owner at all times.

Is "iLottery" or sweepstakes gaming the same as tribal online gaming?

No. Commercial sweepstakes "casinos" that have proliferated in 2024–2026 operate outside IGRA and outside tribal sovereignty frameworks. Tribes have generally opposed them as encroaching on exclusivity without the corresponding obligations, and several states have moved to restrict or tax them.

15. Sources & further reading

• Indian Gaming Regulatory Act, Pub. L. 100-497 (Oct. 17, 1988), codified at 25 U.S.C. §§ 2701–2721.
• California v. Cabazon Band of Mission Indians, 480 U.S. 202 (1987).
• Seminole Tribe of Florida v. Florida, 517 U.S. 44 (1996).
• Murphy v. NCAA, 584 U.S. 453 (2018).
• West Flagler Associates v. Haaland, 71 F.4th 1059 (D.C. Cir. 2023).
• National Indian Gaming Commission, Gross Gaming Revenue Reports, 2019–2024.
• NIGC, 25 C.F.R. Chapter III (Minimum Internal Control Standards).
• Canadian Criminal Code, R.S.C. 1985, c. C-46, §§ 201, 206, 207.
• Saskatchewan Gaming Framework Agreement (1995, amended).
• Canadian Gaming Association, Economic Impact of Gaming in Canada, 2024 ed.
• American Gaming Association & National Indian Gaming Association, Economic Impact of Tribal Gaming, 2025.