Offshore sportsbooks remain a measurable part of U.S. gambling spend even after the expansion of legal sports betting. The core issue is not whether regulated markets have grown; they have. The sharper question is how much wagering still sits outside state-licensed systems, how that affects tax receipts, and what it means for bettors comparing regulated and unregulated options.
The available data support a cautious read. The American Gaming Association reported in August 2025 that Americans wager about $84 billion annually on sports through illegal channels, including offshore books and unregulated bookies. That activity generates about $5 billion in revenue for those operators and costs states roughly $1 billion in sports-betting tax revenue each year, according to the AGA analysis. Those figures do not mean every dollar would have moved to a licensed sportsbook if illegal access vanished, but they show the scale of spend outside the regulated reporting system.
For readers comparing betting-market structure, the distinction matters. Regulated operators report handle, gross gaming revenue, tax payments, and licensing status within state frameworks. Unregulated operators sit outside that structure, which makes consumer protection, dispute resolution, fiscal tracking, and market-share analysis harder to evaluate. For a related overview of betting markets, 1x2bettingpro.com provides insights, treating market comparison as a data problem rather than a picks problem.
Offshore Sportsbooks And Reported Spend Leakage
Why Offshore Sportsbooks Distort Market Share
The AGA’s August 2025 estimate placed the broader illegal and unregulated U.S. gambling market at about $673.6 billion in annual wagers. That wider figure included offshore sports betting, online casino games, and unlicensed machines. Illegal operators generated an estimated $53.9 billion in revenue and cost states roughly $15.3 billion per year in tax losses. Sports wagering was one segment of a larger unregulated market, but it was large enough to affect any clean read of U.S. betting demand.
Market-share analysis becomes less reliable when a material amount of handle is not recorded through licensed operators. In legal markets, analysts can compare handle, hold, promotional intensity, product mix, and tax rate by state. With offshore activity, analysts usually rely on estimates rather than statutory filings. That makes the confidence interval wider around basic questions: how much demand exists, how much legal supply has captured, and how much operator revenue remains beyond state oversight.
The AGA also estimated that the illegal and unregulated gambling market grew by about 22% between 2022 and 2025. The stated drivers were illegal iGaming growth, unregulated skill machines, and persistent activity tied to offshore sportsbooks. For sports-betting analysis, that last point is important because legalization did not automatically erase legacy behavior, brand familiarity, credit-based betting relationships, or access from states without the same legal product set.
Legalization, Borders, And Spillover Effects
What The New York Fed Found Across State Lines
The New York Fed’s “Sports Betting Across Borders” report, revised in March 2026, studied mobile sports betting after the 2018 Murphy v. NCAA decision. It found that legalization was associated with an approximately 10-fold increase in sportsbook spending and a 3.1 percentage-point rise in take-up where legal. The same report found that in non-legal states within 15 miles of a legal state, spillover spending was about 14% of the direct effect and declined to almost zero by 60 miles, according to the New York Fed report.
That finding is useful because it separates two issues often blended together: legal-market adoption and cross-border access. If legal mobile betting raises spending where permitted, nearby non-legal areas may still show effects because residents can cross state lines or interact with neighboring markets. This does not directly measure every unregulated offshore dollar, but it shows that jurisdictional borders shape betting behavior in ways that state-level revenue reports alone can miss.
The report also linked legalization to measurable financial stress indicators. It found median credit scores fell by about 1 point, overall delinquency rose by 0.3 percentage points from a 10.7% base, and spillover delinquency in nearby non-legal areas rose by about 0.2 percentage points. Among borrowers under 40, the reported increases were about 0.5 percentage points for auto loan delinquency and about 1 percentage point for credit-card delinquency. Those figures should be interpreted as population-level associations in the study, not as outcomes for every bettor.
Regulated Versus Unregulated Market Comparison
Product Depth Is Not The Only Variable
Bettors often compare markets through the visible product: moneylines, spreads, totals, player props, live betting, same-game combinations, and pricing differences by operator. Those comparisons are incomplete if licensing status is ignored. A regulated sportsbook operates under state rules that cover account access, identity checks, tax reporting, responsible gambling tools, and complaint pathways. An unregulated site may offer a broad menu, but the absence of a state framework changes the risk profile.
For market analysts, legal operators provide cleaner inputs. Reported handle and revenue help identify where sports calendars, major events, and operator promotions may have influenced demand. Offshore books do not provide the same public reporting base, so spend estimates require indirect methods. That makes comparisons less precise, particularly for live betting and props, where market depth can vary widely by operator and where line movement can be rapid.
Tax treatment also changes the policy read. The AGA’s sports-specific estimate of roughly $1 billion in annual lost state tax revenue is not just an accounting detail. It indicates money states could not assess through licensed sports-betting tax structures. Whether a state uses gambling tax revenue for general funds, education, infrastructure, or other budget categories depends on that state’s law, but unreported betting revenue reduces the amount available for any regulated allocation.
For a closer treatment of that distinction, BettorSearch has covered regulated sportsbooks and offshore market risk through a consumer-protection and fiscal lens. The same framework applies here: a larger betting menu does not automatically imply a lower-risk market.
Data Techniques For Measuring Spend Displacement
Handle, Revenue, Hold, And Tax Losses
Spend displacement is difficult to measure because handle, operator revenue, and tax losses describe different parts of the market. Handle is total amount wagered. Gross gaming revenue is what operators retain before certain deductions and tax treatments. Hold is revenue divided by handle. Tax loss estimates attempt to measure revenue that would have been taxable if the activity occurred through licensed channels, though assumptions can differ by study.
A cautious workflow starts by separating these measures rather than treating them as interchangeable. The AGA’s $84 billion illegal sports-wagering handle estimate is not the same as the $5 billion in illegal operator revenue. The roughly $1 billion in lost sports-betting tax revenue is a third measure. Each serves a different analytical purpose: handle describes betting volume, revenue describes operator economics, and tax loss describes public-sector exposure.
Analysts should also avoid assuming full conversion from offshore to regulated channels. Some bettors might shift to licensed books if unregulated access declined. Others might reduce betting, use local bookies, cross state lines, or move to different gambling products. That uncertainty means displacement estimates are best treated as ranges or scenario inputs, not fixed forecasts.
- State reports help measure licensed handle, revenue, tax rate, and operator mix.
- Industry estimates can frame unregulated activity, but they require careful source review.
- Border analysis can show where access differences affect spending outside a bettor’s home state.
- Credit and delinquency data can add context on financial stress, without proving individual-level harm for every participant.
Consumer Risk Signals In Offshore Betting
Access, Disputes, And Responsible Gambling Gaps
The consumer-risk question is separate from the fiscal question but connected to it. Licensed U.S. sportsbooks are subject to state rules around age verification, geolocation, responsible gambling tools, advertising limits, and account controls. Unregulated operators are not supervised by the same state agencies, which can leave bettors with fewer clear remedies if a payout, account closure, bonus term, or identity dispute arises.
That does not mean every regulated operator has identical pricing, identical market depth, or identical customer service. It means the comparison should include the governing framework. A bettor evaluating two prices on the same event should also evaluate whether the operator is licensed in the bettor’s jurisdiction, whether the terms are enforceable through a recognized regulator, and whether account controls exist. Price is one input; regulatory status is another.
From a data perspective, offshore sportsbooks also weaken responsible-gambling measurement. State-licensed systems can generate exclusion counts, limit-use data, complaint records, and compliance actions. Offshore activity is harder to observe. That blind spot matters because the New York Fed’s findings showed associations between legalization, spending growth, and credit stress. A less visible offshore segment may create similar or different risks, but analysts have fewer validated data streams to test that question.
Measuring Offshore Sportsbooks Spend
A Cautious Read For Bettors And Analysts
The evidence available as of September 3, 2026, supports a limited but clear conclusion: legal sports betting expansion did not eliminate unregulated betting spend in the United States. The AGA’s August 2025 estimates put illegal sports wagering at about $84 billion annually, while the New York Fed’s March 2026 revision showed that legal access can sharply raise recorded sportsbook spending and create measurable border effects. Those two findings can coexist.
The practical read is that offshore sportsbooks affect U.S. gambling spend in three ways. First, they reduce the clarity of market-size estimates because a portion of handle is not captured in state reports. Second, they reduce potential tax receipts when gambling revenue sits outside licensed systems. Third, they create consumer-risk and data-quality gaps that make sportsbook comparison less straightforward.
No single estimate should be treated as a full map of the market. The best analysis pairs regulated state data with high-quality national estimates, separates handle from revenue and tax effects, and treats cross-border behavior as part of access analysis. For bettors, the responsible comparison is not about finding a shortcut around rules. It is about understanding which markets are regulated, which data are observable, and which risks are being priced into the betting experience.