Last Updated on August 21, 2026 by Maurya
Gambling laws in the United States have changed dramatically over the past decade. Activities that were once restricted to a handful of destinations are now available legally in much of the country, particularly sports betting. Mobile sportsbooks, new casino developments and, in a smaller number of states, regulated online casino gaming have transformed the U.S. gambling landscape.
So, why are so many states legalizing gambling?
There is no single explanation. Tax revenue is certainly important, but legalization is also being driven by changing consumer behavior, the growth of mobile technology, competition with illegal gambling operators, pressure to keep spending inside state borders and lawmakers’ belief that a regulated market can provide stronger consumer protections than an underground one.
The biggest turning point came in 2018, when the U.S. Supreme Court struck down key provisions of the Professional and Amateur Sports Protection Act (PASPA). The Court held that the federal law’s restrictions on states authorizing sports gambling violated the Constitution’s anticommandeering principle. That decision did not automatically legalize sports betting nationwide; instead, it gave individual states much greater freedom to decide whether and how they wanted to regulate it.
Since then, legal gambling has become a major state-level policy issue.
Gambling Legalization in the United States Has Accelerated
Before the Supreme Court’s Murphy v. NCAA ruling, Nevada was overwhelmingly associated with legal sports wagering in the United States. After 2018, state legislatures began creating their own licensing, taxation and regulatory systems at remarkable speed.
By 2026, sports betting was live and legal in 39 states and Washington, D.C., according to the American Gaming Association (AGA). The broader commercial gambling industry has expanded as well, although legal access varies significantly depending on the state and the type of gambling involved.
That distinction matters.
A state may permit retail casinos without allowing online casinos. Another may permit mobile sports betting but prohibit casino-style internet games. Some jurisdictions restrict betting to tribal casinos or specified physical locations. Therefore, “gambling legalization” does not mean every state is adopting the same Las Vegas-style model.
Nevertheless, the overall direction is clear: more lawmakers are choosing regulation over prohibition.
States Want the Tax Revenue
The most obvious reason states legalize gambling is money.
A regulated gambling market creates a taxable industry. States can collect licensing fees, gambling-specific taxes and, depending on the structure of the market, additional corporate, employment and other tax revenues.
The numbers are now large enough to command attention in state capitals.
The AGA’s State of the States 2026 report found that U.S. commercial gaming generated approximately $78.6 billion in revenue during 2025, up more than 9% from the previous year. Commercial gaming operators generated approximately $17.86 billion in direct gaming tax revenue for state and local governments and other designated beneficiaries.
Sports betting has become an increasingly important part of that total. Commercial sports betting generated approximately $16.9 billion in revenue during 2025, while regulated iGaming produced roughly $10.7 billion.
Tax structures differ dramatically from state to state. According to the National Conference of State Legislatures, most jurisdictions tax sports betting revenue somewhere between 10% and 20%, although several states use substantially higher rates. New York, New Hampshire and Rhode Island are notable examples of jurisdictions where the effective state share or tax rate can reach 51%.
New York demonstrates why other lawmakers pay attention. Tax Foundation data shows that New York collected more than $1 billion from online sports betting taxes in 2024 alone.
For lawmakers looking for revenue without increasing income or general sales-tax rates, gambling can therefore appear politically attractive.
However, gambling taxes should not be treated as a magic solution to state budget problems. Tax revenue varies substantially according to population, market structure, tax rates and consumer participation. Tax Foundation analysts have repeatedly cautioned that gambling taxes are better viewed as one component of a state’s revenue system rather than a dependable fix for major long-term fiscal challenges.
Americans Were Already Gambling Before Legalization
Another important reason for legalization is simple: prohibition did not eliminate gambling.
Americans have long placed bets through offshore websites, neighborhood bookmakers, informal betting pools and other unregulated channels. From a policymaker’s perspective, that creates an uncomfortable situation.
The gambling is occurring anyway, but the state receives no tax revenue and has limited ability to enforce age requirements, investigate complaints or impose responsible-gambling standards.
Legalization offers another approach: move as much existing demand as possible from illegal operators into licensed markets.
The scale of the unregulated market remains substantial. An AGA analysis published in 2025 estimated that Americans wager approximately $673.6 billion annually through illegal or unregulated gambling channels and that illegal operators account for almost one-third of the overall U.S. gambling market by revenue. Because the AGA represents the regulated gaming industry, its estimates should be understood in that context, but they nevertheless illustrate why illegal gambling remains central to legislative debates.
Lawmakers therefore increasingly face a practical question rather than a purely moral one: If residents are going to gamble regardless, is a regulated market preferable to an underground market?
Many states have answered yes.
Regulation Gives States More Consumer-Protection Tools
Legalization does not simply mean allowing companies to accept bets.
A regulated gambling system gives state agencies the authority to determine which operators can participate and under what conditions.
Licensed operators can be required to verify customers’ identities and ages, protect player funds, follow cybersecurity requirements, publish rules, comply with advertising restrictions and provide responsible-gambling features.
States can also investigate operators and impose fines, suspend licenses or revoke licenses when companies fail to comply.
Massachusetts provides a useful example. The Massachusetts Gaming Commission regulates licensed casinos and sports wagering operators and requires them to comply with state law and responsible-gaming requirements.
The state also maintains a voluntary self-exclusion system allowing individuals to prevent themselves from participating in casino gambling, sports wagering or both. Sports bettors who enroll are blocked from wagering with licensed Massachusetts operators during their selected exclusion period.
These protections are not perfect, and regulation cannot eliminate gambling-related harm. But licensed companies can be monitored in ways that offshore websites and illegal bookmakers generally cannot.
That ability to establish enforceable rules has become one of the strongest arguments for legalization.
Mobile Technology Changed the Economics of Gambling
Modern gambling legalization would probably look very different without smartphones.
Sports betting used to require a customer to physically visit a sportsbook, casino or bookmaker. Today, a licensed sportsbook can operate statewide through an app, provided the bettor is physically located within the permitted jurisdiction.
That dramatically increases the potential size of the legal market.
Mobile gambling reduces friction. Customers do not need to drive to a casino, cross a state border or visit a betting counter. Deposits, wagers and withdrawals can all be managed from a phone.
This accessibility has helped turn sports wagering into a mainstream digital entertainment product.
Tax Foundation data from 2025 showed that statewide online sports betting was available in 30 states plus Washington, D.C., demonstrating how important mobile access has become to the industry’s expansion.
For states, online gambling can also be easier to monitor technologically. Licensed platforms use geolocation systems designed to confirm that bets originate inside authorized boundaries, while digital transactions create detailed records for regulators and operators.
At the same time, convenience is also one of the industry’s biggest policy concerns. Having a sportsbook available around the clock on a smartphone can make gambling easier to engage with excessively. That is one reason responsible-gambling rules have become increasingly important as states expand mobile betting.
States Do Not Want Gambling Dollars Leaving Their Borders
Competition between states is another powerful factor.
Suppose one state prohibits sports betting while neighboring states allow it. Residents may simply drive across the state line, place a wager legally and spend money in another jurisdiction.
Mobile gambling makes that behavior even easier. A bettor may only need to cross the border far enough for an app’s geolocation technology to confirm that the device is inside the legal state.
From the home state’s perspective, this creates the worst of both worlds: residents are gambling, but another jurisdiction receives the economic activity and tax revenue.
As more states legalize gambling, pressure therefore increases on the remaining holdouts.
This creates a domino effect.
One state legalizes. Its neighbors watch the results. If the market generates significant tax revenue without producing political consequences severe enough to outweigh the benefits, neighboring lawmakers gain a working regulatory model they can study or modify.
Legalization consequently becomes easier with each new state that adopts it.
The Supreme Court Turned Gambling Into a State-Level Experiment
The 2018 Supreme Court decision was important not merely because it affected sports betting. It created an environment in which states could experiment with very different gambling policies.
In Murphy v. NCAA, the Court concluded that PASPA’s provisions preventing states from authorizing or licensing sports gambling violated constitutional limits on the federal government directing state legislatures.
States were then free to decide whether to authorize sports betting and, if they did, how the market should operate.
The results have effectively created dozens of policy experiments.
Some states have relatively low taxes and multiple competing sportsbook operators. Others use high tax rates. Some restrict licenses to existing casinos. Others permit statewide mobile betting. Certain jurisdictions rely heavily on tribal gaming arrangements, while others operate through lotteries or commercial gaming regulators.
Lawmakers considering legalization today do not have to design a system from scratch. They can examine years of results from New Jersey, Pennsylvania, New York, Massachusetts, Ohio, Michigan and other established markets.
That accumulated experience lowers the political and administrative barriers to legalization.
Professional Sports Have Become More Comfortable With Betting
Another major cultural change is the relationship between sports and gambling.
For decades, major U.S. sports organizations treated gambling primarily as a threat to the integrity of competition. Concerns about match fixing and illegal betting remain important, but the relationship has changed substantially.
Sportsbooks are now widely visible around professional sports through advertising, sponsorship arrangements, media partnerships and betting-related broadcasts.
Fans encounter point spreads, totals and betting odds through mainstream sports media rather than only dedicated gambling publications.
As a result, sports betting no longer feels like a niche activity located outside the traditional sports ecosystem.
This normalization matters politically. Legalizing something that millions of voters already see advertised during games or discussed on sports television is very different from introducing an entirely unfamiliar industry.
The market is also enormous. The AGA estimated that Americans would legally wager approximately $30 billion on the 2025 NFL season alone.
That level of participation reinforces lawmakers’ perception that sports betting has become an established consumer activity rather than a temporary trend.
Gambling Can Support Local Economic Development
Legal gambling can also be attractive as an economic-development project.
Large casino resorts may involve hotels, restaurants, entertainment venues, convention facilities and retail businesses in addition to gambling floors.
Governments may therefore consider employment, tourism and development investment alongside direct gambling taxes when evaluating casino proposals.
The scale of the broader U.S. casino market shows why these projects receive attention. According to the AGA, 493 commercial casino properties were operating across 27 states in 2025, and traditional casino gaming generated more than $51 billion in revenue that year.
However, economic-development claims need to be evaluated carefully. Not every dollar spent in a casino represents new economic activity. Some gambling expenditure may substitute for money that consumers would otherwise spend at restaurants, cinemas, retail businesses or other forms of entertainment.
Successful policy therefore depends partly on whether a gambling development attracts outside visitors, creates sustainable employment and generates genuinely additional economic activity.
Legalization Lets States Control the Industry Instead of Ignoring It
There is also a philosophical shift taking place in state policy.
Instead of asking whether gambling should exist, policymakers increasingly ask how gambling that already exists should be managed.
That changes the debate.
Prohibition gives government one primary tool: enforcement.
Legalization creates many additional tools, including licensing standards, financial audits, advertising regulations, geolocation requirements, age verification, self-exclusion programs, tax collection and operator penalties.
For some lawmakers, regulating an existing behavior is more realistic than attempting to eliminate it.
This is particularly relevant online, where consumers can access websites and digital platforms located outside the United States. State borders are much easier to enforce against a licensed mobile operator than against every offshore website available through the internet.
Public Attitudes Toward Gambling Have Changed
Political decisions ultimately reflect voters, and attitudes toward gambling have become considerably more permissive in many parts of the United States.
Lotteries are already commonplace. Tribal and commercial casinos operate across much of the country. Poker, fantasy sports and sports betting are familiar forms of entertainment.
As gambling becomes normalized, the political cost of supporting legalization may decline.
That does not mean there is universal public support. Major gambling proposals continue to fail in legislatures and referendums, particularly in states where religious organizations, tribal governments, casino operators, sports interests or anti-gambling groups disagree over the structure of the proposed market.
But legalization is no longer an unusual policy experiment. It is an established option that state lawmakers can compare with systems operating elsewhere.
Why Online Casinos Are Being Legalized More Slowly Than Sports Betting
The rapid spread of sports betting can create the impression that every form of online gambling is expanding equally quickly.
That is not the case.
In 2025, full regulated iGaming was operating in only seven states, according to the AGA, even though sports betting had spread across most of the country. Those seven markets nevertheless generated approximately $10.73 billion in annual iGaming revenue.
Online casino legalization faces additional political resistance because games such as online slots can be played continuously rather than being tied to individual sporting events.
There are also debates over whether online casinos could reduce revenue at physical casinos, affect casino employment or increase gambling-related harm.
The contrast demonstrates an important point: U.S. gambling expansion is not simply a race toward complete legalization. States remain highly selective about what forms of gambling they are willing to permit.
What Are the Risks of Legalizing Gambling?
The economic case for legalization is only one side of the debate.
Greater access can also increase opportunities for harmful gambling behavior.
The National Conference of State Legislatures notes both the fiscal benefits of sports betting and concerns surrounding problem gambling as states consider regulatory policy.
Research has also raised concerns about household finances. A 2024 National Bureau of Economic Research working paper studying online sports betting found that legalization was associated with reduced savings and increased financial strain among financially constrained households, including increases in credit-card debt and overdraft activity.
A separate 2026 NBER working paper found evidence that sports-betting legalization was associated with reduced food sufficiency among certain financially vulnerable households during periods of heavy sports betting activity. As working papers, these studies should not be treated as the final word on the subject, but they reinforce the need for policymakers to consider social costs as well as tax receipts.
That is why serious gambling regulation increasingly includes funding for research and treatment, self-exclusion systems, advertising controls, age restrictions and tools that allow customers to set spending or deposit limits.
The question for governments is not simply whether gambling produces revenue. It is whether the overall regulatory framework can capture economic benefits while limiting preventable harm.
Is Gambling Tax Revenue Really Worth It for States?
For many states, yes—but with qualifications.
Gambling can generate hundreds of millions or even billions of dollars in taxes in large markets. Yet revenue differs enormously between jurisdictions.
Population size, tourism, tax rates, competition, mobile access and the number of available operators all influence collections.
There is also a limit to how aggressively governments can tax the industry.
If taxes and regulatory costs become excessively high, legal operators may offer worse odds or fewer promotions, and consumers could remain with illegal alternatives. Tax Foundation researchers argue that sustainable tax rates can therefore play an important role in encouraging wagering to move from unregulated markets into legal ones.
A successful legal market has to balance three objectives: generating government revenue, maintaining enough competition to attract consumers away from illegal operators, and providing meaningful consumer protections.
Will More States Legalize Gambling?
Further expansion is likely, although progress will become more complicated as the remaining states tend to have stronger political, constitutional or stakeholder barriers.
Sports betting has already moved from a Nevada-centered industry to something available across most of the United States.
Online casino gaming could represent the next major battleground. The financial incentive is significant: regulated U.S. iGaming revenue exceeded $10 billion in 2025 despite operating in only seven states.
However, the speed of expansion will depend on each state’s political environment, tribal gaming relationships, existing casino industry, constitutional requirements and attitudes toward gambling-related harm.
Rather than nationwide uniformity, the United States is likely to continue operating as a patchwork of very different gambling systems.
Why Are So Many States Legalizing Gambling? The Bottom Line
States are legalizing gambling because the economics, technology and politics surrounding the industry have changed.
The 2018 Murphy v. NCAA decision removed a major federal barrier to state-authorized sports betting. Smartphones made statewide mobile betting commercially practical. Consumers demonstrated that they were willing to wager in enormous numbers. Meanwhile, states saw an opportunity to tax activity that had often occurred through illegal or offshore channels.
Regulation also gives governments tools that prohibition does not: licensing, age verification, operator audits, responsible-gambling requirements, self-exclusion programs and enforcement powers.
Tax revenue remains a powerful motivation. With commercial gambling producing tens of billions of dollars in annual revenue and billions in state and local gaming taxes, lawmakers naturally pay attention.
But legalization comes with genuine trade-offs. Easier gambling access can create financial and public-health risks, particularly for vulnerable consumers. States that expand gambling therefore face an increasingly important challenge: legalizing a market is relatively easy; designing a sustainable, competitive and socially responsible one is much harder.
That balancing act—not simply the pursuit of tax dollars—will determine the next phase of gambling legalization in America.
FAQs
Why did states start legalizing sports betting?
The biggest catalyst was the Supreme Court’s 2018 decision in Murphy v. NCAA. The ruling struck down PASPA provisions that prevented states from authorizing sports gambling, allowing individual states to create their own regulated sports-betting systems.
Why do governments support gambling legalization?
Common reasons include generating tax revenue, regulating an activity that already exists, protecting consumers, competing with neighboring states, reducing the appeal of illegal operators and encouraging investment in regulated gaming businesses.
How much money do states make from gambling?
Commercial gaming generated approximately $17.86 billion in direct gaming tax revenue for state and local governments and other beneficiaries during 2025, according to the AGA’s State of the States 2026 report. The amount collected varies significantly by state and gambling type.
How many states allow sports betting?
The American Gaming Association reports that sports betting is live and legal in 39 states plus Washington, D.C. The exact count can differ between sources depending on whether they classify states where betting has been authorized but remains limited, tribal-only or not yet operational.
Does legalizing gambling eliminate illegal gambling?
No. Illegal and offshore gambling continues to exist even in states with regulated markets. One objective of legalization is to encourage consumers to use licensed alternatives where operators are subject to state oversight, taxation and consumer-protection rules.
Why haven’t all states legalized online casinos?
Online casino gaming generally faces greater political and responsible-gambling concerns than sports betting. Some lawmakers also worry about potential effects on land-based casinos and casino employment. As of 2025, regulated full iGaming operated in only seven states despite sports betting being available across most of the country.
Is gambling legalization good or bad?
There is no universal answer. Legalization can generate tax revenue, establish consumer protections and redirect activity away from illegal operators. At the same time, greater accessibility can increase risks associated with problem gambling and household financial stress. The outcome depends heavily on how effectively each state regulates its market.
