Quick Answer
Online casino legality in the United States is a complex patchwork of federal and state laws. As of 2025, commercial online casinos (real-money slots, table games) are explicitly legal and regulated in only six states: New Jersey, Pennsylvania, Michigan, Delaware, West Virginia, and Connecticut. A handful of other states offer limited forms of online gambling (e.g., sports betting or poker only), while the vast majority prohibit it entirely. For Australian players, this contrast is stark: the US approach is state-by-state permissive licensing, whereas Australia’s Interactive Gambling Act 1997 (IGA) criminalizes the provision of online casino services to Australian residents, not their use. This means while a US resident in New Jersey can legally play online blackjack, an Australian player logging into the same site would be breaking Australian law (as the operator is offering it to them). Below, we break down the US legal landscape in detail, with relevant comparisons to Australian regulations.
Federal Law: The Wire Act and UIGEA
At the federal level, no US law outright bans online gambling for individuals. However, two key statutes shape the legal environment:
- The Wire Act of 1961: Originally designed to combat sports betting via telephone, it prohibits the transmission of bets or wagering information across state lines. In 2011, the Department of Justice (DOJ) reinterpreted the Wire Act to apply only to sports betting, opening the door for state-regulated online casinos. A 2018 DOJ opinion reversed this, but court rulings have since reaffirmed that non-sports online gambling is not covered. This remains a legal grey area for interstate operations.
- The Unlawful Internet Gambling Enforcement Act (UIGEA) of 2006: This law targets financial transactions—it makes it illegal for banks and payment processors to knowingly accept funds for “unlawful internet gambling.” It does not define what constitutes unlawful gambling, leaving that to state law. For Australian players, UIGEA is why many offshore casinos (including those accepting Aussies) struggle with credit card deposits.
Critically, the IGA (1997) in Australia takes a different approach: it directly bans operators from offering “covered interactive gambling services” (including online casinos) to Australian residents, but does not penalize players. The US federal system, by contrast, does not criminalize players either, but leaves licensing to states—meaning a US player in a legal state faces no legal risk, while an Australian player on the same site would be using a service that is illegal for the operator to provide.
States Where Online Casinos Are Legal (2025)
Only six states have fully regulated online casino markets (slots, table games, live dealer). They require operators to hold state licenses, use geolocation software, and pay taxes (typically 15–30% of revenue).
- New Jersey: Launched in 2013, the most mature market. Over 20 licensed operators, including major brands like DraftKings and BetMGM.
- Pennsylvania: Legalized in 2017, second-largest market. Offers a wide range of games and high tax rates (54% on slots).
- Michigan: Launched in 2021, rapidly growing. Allows online casinos, poker, and sports betting.
- Delaware: Small market, legal since 2013, but limited operator options (three casinos).
- West Virginia: Legalized in 2019, but slow rollout. Only a few operators active.
- Connecticut: Launched in 2021, with two tribal operators (Mohegan Sun and Foxwoods).
States With Legal Online Poker Only
Some states have legalized online poker but not full casino games. These include Nevada (poker only via WSOP.com) and Delaware (poker as part of its casino offering). Nevada’s online poker market is shared with New Jersey and Delaware via the Multi-State Internet Gaming Agreement (MSIGA).
States With Legal Sports Betting Only
Over 30 states have legalized online sports betting (e.g., New York, Illinois, Colorado), but this does not include casino games. Australian players should note that sports betting is legal in Australia under the IGA (1997) as long as it is “in-play” or “telephone” betting is not prohibited—but online casino remains banned.
States Where Online Casinos Are Illegal
The majority of US states (over 40) prohibit online casinos entirely. This includes populous states like California, Texas, Florida, and New York. In these states, accessing an offshore online casino is a legal grey area—players are rarely prosecuted, but operators face risks. For Australian players, this mirrors their own situation: the IGA makes it illegal for offshore operators to target Aussies, but players are not punished. However, the US has no equivalent to Australia’s ACMA (Australian Communications and Media Authority) which actively blocks illegal gambling websites.
How US Regulation Differs From Australia
For Australian readers, understanding the contrast is key:
- Player Protection: In US legal states, players must verify identity (KYC) and age, and funds are held in segregated accounts. In Australia, licensed offshore casinos (e.g., those in Curacao) often lack such safeguards. The IGA’s ban on local licensing means Aussies rely on unregulated offshore sites.
- Taxation: US players pay taxes on gambling winnings (reportable to the IRS). Australia has no gambling tax on player winnings—a major advantage for Aussies.
- Payment Methods: US legal states accept credit cards, PayPal, and bank transfers. In Australia, the IGA and the Banking Amendment Act 2023 have led to banks blocking credit card transactions for online gambling, making deposits harder.
- Enforcement: The US uses geolocation to enforce state borders; the ACMA uses ISP blocking to enforce national borders. Both systems have loopholes (e.g., VPNs), but the US approach is more effective at preventing underage play.
Legal Risks for Australian Players Using US Sites
If an Australian player attempts to access a US-licensed online casino (e.g., one in New Jersey), they face two key issues:
- Geolocation Blocking: US casinos use IP-based geolocation to deny access from outside the state. Even with a VPN, this violates the operator’s terms and may lead to account closure.
- Australian Law: Under the IGA, the US operator would be committing an offense by offering the service to an Australian resident (even if the player uses a VPN). The player themselves is not criminally liable, but the operator could face fines from the ACMA.
Therefore, Australian players should not attempt to use US-regulated online casinos. Instead, the only legal (though unregulated) option for Aussies is offshore casinos licensed in jurisdictions like Curacao or Malta—but these carry their own risks (e.g., unfair games, no dispute resolution).
Key Takeaways for Australian Players
- US online casinos are only legal in 6 states: New Jersey, Pennsylvania, Michigan, Delaware, West Virginia, and Connecticut. Players in other states face the same unregulated offshore market as Australians.
- Australian law (IGA 1997) bans operators, not players: This means you cannot legally use a US-licensed casino from Australia, as the operator would be violating the IGA by accepting you.
- No state-licensed US casino will accept Australian players: Strict geolocation and KYC checks make it impossible to register from overseas.
- Your best option remains offshore casinos: Licensed in Curacao, Malta, or the UK (for sports betting only). Always check for ACMA blocking lists to avoid sites that may be seized.
- Stay informed: The US market is expanding slowly (e.g., Rhode Island, Maryland may legalize soon), but Australia’s IGA shows no signs of reform. For now, the two countries’ legal frameworks remain fundamentally incompatible.