This guide reads the main federal gambling laws in plain words, with the statute sections and dates, and shows where state and tribal law take over. It is general information as of October 2026, not legal advice.
It is part of our Law by country section. For a contrast, see gambling law in India.
Is gambling legal in the United States?
It depends on the state, the type of gambling and whether the land is tribal. As of October 2026 there is no single national rule that legalizes or bans gambling. Congress passed a handful of targeted laws, and states and tribes decide most of the rest.
- Federal law: a few statutes aimed mostly at businesses, interstate activity, payments and tribal gaming.
- State law: what is allowed inside each state, who may be licensed and the rules for players.
- Tribal law and compacts: casino-style gaming on Indian lands under a federal framework.
Why do states, not Congress, decide most gambling rules?
Under the Tenth Amendment, powers not given to Congress stay with the states, and Congress may not order state legislatures what to enact. So gambling is mostly regulated at state level, with federal law added for interstate and financial activity.
The clearest recent example is Murphy v. NCAA, decided on May 14, 2018. A federal law, PASPA, had made it unlawful for a state to “authorize” covered sports gambling. New Jersey partly repealed its own sports wagering bans in 2014, and the NCAA and major leagues sued. Justice Alito wrote the opinion for the Court.
The Court held that PASPA’s anti-authorization rule “issues a direct order to the state legislature,” which breaks the anticommandeering rule. No provision of PASPA could be separated from that rule. The Court added: “Congress can regulate sports gambling directly, but if it elects not to do so, each State is free to act on its own.”
In plain terms, Congress cannot force states to keep their own bans. That is why sports betting is now a state-by-state question.
Which federal gambling laws still apply?
Four federal statutes come up most often: the Wire Act, the Unlawful Internet Gambling Enforcement Act (UIGEA), the Illegal Gambling Business Act and the lottery-ticket law. Most target businesses, not ordinary players. The table shows what each covers and its maximum penalty, as the statute text states it.
Read more: Is Gambling Legal Where You Live?
| Law | What it covers, in plain words | Maximum penalty in the text |
|---|---|---|
| Wire Act, 18 U.S.C. 1084 | A person “engaged in the business of betting or wagering” who knowingly uses a wire facility to send bets, or information that helps place them, across state or national lines. A safe harbor covers some transmissions between places where the betting is legal. | Fine, up to 2 years, or both |
| UIGEA, 31 U.S.C. 5363 and 5366 | A person in the business of betting or wagering may not knowingly accept credit, electronic transfers, checks or similar payments tied to someone else’s unlawful internet gambling. | Fine, up to 5 years, or both |
| Illegal Gambling Business Act, 18 U.S.C. 1955 | Running, financing, managing or owning an illegal gambling business (see the worked reading below). | Fine, up to 5 years, or both |
| Lottery tickets, 18 U.S.C. 1301 | Importing lottery tickets, or carrying them across state lines for sale. Section 1307 exempts some state-run lottery activity. | Fine, up to 2 years, or both |
Federal law often sits on top of state law. The Wire Act says it creates no “immunity from criminal prosecution under any laws of any State,” and section 1955 applies only if a business already breaks state or local law.
Is the Wire Act limited to sports betting?
A federal appeals court said yes in 2021, and the Department of Justice did not take the case further. The government’s own lawyers have read the Act two different ways since 2011, so any statement about how it applies to a product should be dated and checked.
| Date | What happened | Source |
|---|---|---|
| 2011 | The Office of Legal Counsel (OLC) opinion concluded the Wire Act was limited to sports gambling. | OLC 2018 opinion, describing the 2011 one |
| Nov. 2, 2018 | A new OLC opinion said only one of the Act’s prohibitions is limited to sports, and that UIGEA did not change its scope. It stated that it “supersedes and replaces” the 2011 opinion. | OLC opinion, 42 Op. O.L.C. 158 |
| Jan. 20, 2021 | In New Hampshire Lottery Commission v. Rosen, the First Circuit held the Act’s prohibitions “apply only to the interstate transmission of wire communications related to any ‘sporting event or contest.’” | First Circuit opinion |
| June to July 2021 | The deadline to seek Supreme Court review passed, and the Department of Justice said it was not planning to. A law firm summary says it had effectively returned to the 2011 reading. | Law firm summary |
The statute itself has not been amended. How the sports-only reading applies to a given online product is a question for a lawyer.
What does UIGEA say about online gambling?
UIGEA’s operative section is addressed to businesses that knowingly accept certain payments in connection with unlawful internet gambling. It sets no duty for the customer in the text we read. Whether a bet is “unlawful” depends on the federal or state law where the bet is made, not on UIGEA itself.
The definitions section, 31 U.S.C. 5362, ties “unlawful internet gambling” to bets that are unlawful under federal or state law where they are initiated, received or made.
The same section carves out two things. A bet made entirely inside one state is not covered if that state expressly authorizes it and requires age and location checks. Some fantasy and simulation sports are also outside the definition of a bet, if conditions such as prizes set in advance are met.
That carve-out does not settle state law. A note on Hawaii Revised Statutes 712-1220 records an Attorney General opinion, 16-1, concluding that daily fantasy sports betting is gambling under that state’s law.
How does tribal gaming fit into US gambling law?
Tribal casinos run under the Indian Gaming Regulatory Act (IGRA), a federal law that sorts gaming into three classes. The class decides who regulates it and whether a tribal-state compact is needed. Bingo-style games sit in a lighter tier than casino-style games.
| Class | What it covers | Who regulates |
|---|---|---|
| Class I | Social games for prizes of minimal value, and traditional gaming tied to tribal ceremonies or celebrations. | Tribes have exclusive jurisdiction; IGRA does not apply |
| Class II | Bingo (with or without electronic aids), pull-tabs, lotto and similar games, and some card games if state law allows. Banking card games and slot-type machines are excluded. | Tribes, under an ordinance approved by the National Indian Gaming Commission (NIGC) |
| Class III | All gaming that is neither Class I nor Class II, such as casino-style games. | Needs an approved tribal ordinance and a tribal-state compact in effect |
The classes come from 25 U.S.C. 2703. The NIGC summary adds that a state must negotiate a compact in good faith if a tribe asks, and a compact takes effect only after the Secretary of the Interior publishes notice of approval in the Federal Register.
How do state rules differ in practice?
States differ on which games they allow, who regulates them and who may play. A state may allow casinos but not online games, or lotteries but not casinos. The same word, “gambling,” can mean quite different legal bundles in two states.
| State body | What its own page says it does |
|---|---|
| Nevada Gaming Control Board | Created by the 1955 Legislature and “responsible for regulating all aspects of Nevada’s gaming industry,” through six divisions. |
| New Jersey Division of Gaming Enforcement | The investigative and law enforcement arm of the state’s casino regulatory system; enforces the Casino Control Act. |
| Pennsylvania Gaming Control Board | An independent state agency regulating casino and internet-based gambling, sports wagering, video gaming terminal gambling and fantasy sport games. |
The American Gaming Association, an industry trade body, refers to 38 jurisdictions with commercial gaming operations in 2025 on its state gaming map page. We give no state-by-state count, because we could not confirm a current one from a government source.
How could a federal test apply? A worked reading of section 1955
Section 1955 shows how to read a statute: split it into elements and check each one. All three must be met, and the first depends entirely on state or local law. This illustrates the wording, not any real business.
- Element 1: the business breaks the law of the state or local area where it operates.
- Element 2: five or more people conduct, finance, manage, supervise, direct or own all or part of it.
- Element 3: it has run in “substantially continuous operation” for more than 30 days, or takes in $2,000 gross in any single day.
Take an invented example: a business with eight people that has operated for 45 days meets elements 2 and 3 on the text. If state law allows it, element 1 fails and section 1955 is not triggered. If state law does not, all three are met. The same facts can give opposite federal outcomes depending on state law.
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Find a helplineWhich layer answers your question?
Federal, state and tribal law answer different questions, so sort yours by layer first. This table points common questions to the law or body that decides them, so you know where to read. It is a map, not an answer to your situation.
| Your question | Which layer decides | Where to look |
|---|---|---|
| Can adults bet on sports in my state? | State law, since the 2018 Murphy ruling | Your state’s gaming regulator |
| Is a casino on tribal land allowed? | IGRA, the tribe’s ordinance and any compact | The NIGC and the state’s compact information |
| Are lottery tickets allowed to cross state lines? | 18 U.S.C. 1301 and 1307, plus state law | The statute text and the state lottery’s rules |
What does this guide not cover?
We do not list every state or cover minimum ages by state, bank and advertising rules, or where to play. Our guides on tax on winnings and prediction markets cover those topics separately. State law also changes, so treat every statement here as dated.
Our guide on how to check legality where you live gives a general method, our guide on unlicensed sites and scams explains warning signs, and if gambling is costing you more than you can afford, free help is available.
What should you do next to check your own state?
Start with your state’s own gaming regulator, not a review site. These steps usually settle the practical question. If they do not, a lawyer who knows gambling law in your state is the next step.
- Search for your state’s gaming or gambling regulator on your state government’s website.
- Read which activities that regulator covers: casinos, sports wagering, lotteries, poker or online games.
- Check any business against the regulator’s licensed list.
- Read the minimum age on the regulator’s page. It can differ by activity.
- For tribal casinos, check the tribe’s own page and the NIGC, as the rules may differ from the state’s.
- If the answer is still unclear, ask a lawyer who knows gambling law in your state.
If you are in immediate danger, call your local emergency number.