Unregulated online gambling reached an estimated $5.9 trillion in global wagering value in 2025, according to a new Gaming Compliance International report.
That is a huge number, but the betting angle is not just “illegal gambling is big.” The more useful question is why so much betting and casino activity still happens outside regulated markets, even as more countries and US states open legal online gambling.
The answer is uncomfortable for regulators and operators: many bettors still want faster access, fewer checks, bigger bonuses, broader payment options, higher limits, crypto support, or products that regulated sites don’t offer.
What the GCI Report Says
Gaming Compliance International estimated that unregulated online gambling hit $5.9 trillion in wagering value in 2025, up from $5.7 trillion in 2024 and $5.1 trillion in 2023. The report focused only on online gambling and excluded land-based casinos and retail betting shops.
GCI defined unregulated online gambling as unlicensed products that actively target local consumers. The category included sports betting, casino games, poker, crypto gambling, lotteries and some prediction market activity.
The report also estimated that unregulated operators accounted for around 78% of global online gaming gross gaming revenue in 2025, compared with 22% for regulated operators.
That figure needs careful reading. Wagering value is not the same as revenue. A bettor can stake the same bankroll many times, especially in casino or high-frequency betting markets. Still, the scale matters.
The number points to a market that regulators have not boxed in, despite years of legalisation, enforcement and licensing expansion.
Why Bettors Still Use Unregulated Sites
The easy explanation is that unregulated sites ignore rules. That is true, but it is not the full story.
Many bettors use these sites because regulated options don’t always meet demand.
Common reasons include:
- Payment choice: crypto, e-wallets and alternative payment routes are often easier to find offshore.
- Bonus size: unregulated sites usually advertise larger welcome offers and reload deals.
- Account limits: sharp or high-volume bettors may face fewer restrictions away from mainstream books.
- Product depth: some sites offer wider casino libraries, niche sports markets or higher-risk betting products.
- Access: players in restricted markets may still be able to create accounts offshore.
That does not make the trade-off risk-free. It just explains why the demand exists.
A legal sportsbook can have stronger consumer protections, safer payment handling and clearer complaints routes. But if it offers thin markets, slow withdrawals, strict limits or weak bonuses, some bettors will look elsewhere.
That is the market gap unregulated operators keep exploiting.
The Regulated Market Is Still Growing
The legal online gambling sector is not standing still. Grand View Research estimated the global online gambling market at $78.66 billion in 2024, with a projected rise to $153.57 billion by 2030.
Sports betting made up more than 50% of the market by product type in 2024, according to the same research.
So the regulated side is growing. The problem is that unregulated operators are growing around it, not simply disappearing as legal markets open.
That is the key point for bettors and operators.
Legalisation alone does not kill the black market. It only gives bettors a regulated alternative. If that alternative is expensive, restrictive or weak on product, unregulated operators keep a reason to exist.
What This Means for Bettors
For bettors, the $5.9 trillion figure is a warning about market reality rather than a simple instruction to avoid or use any one type of site.
Regulated sites usually give you clearer rules, stronger consumer protections and more reliable routes for disputes. That matters if a withdrawal is delayed, an account is closed, or bonus terms are applied against you.
Unregulated sites can look more flexible, but the risk sits in the fine print. Payout rules, verification triggers, bonus restrictions and complaint options can vary wildly.
The big mistake is judging a site only by bonus size or market access.
Check the boring stuff first:
- Who operates the site?
- What licence, if any, does it claim?
- Are withdrawal limits clear?
- Does the same payment method work for deposits and payouts?
- Can the site ask for ID before cashing out?
- Are bonus max-win caps and wagering rules obvious?
If those answers are vague, the bigger bonus may not be worth much.
What This Means for Operators
For regulated operators, the report is another reminder that compliance alone is not enough to win players back.
A legal site still has to compete on the basics: price, speed, product range, payments and usability.
If regulated operators offer worse odds, weaker promotions, slower payouts and fewer payment choices, unregulated rivals will keep pulling in players who care more about betting friction than regulatory status.
That creates a hard balance.
Regulators want safer markets. Operators want protected licences. Bettors want value, access and fewer obstacles. Those three priorities don’t always line up neatly.
The black market grows fastest in the gap between what rules allow and what bettors actually want.
The Betfinder Take
The $5.9 trillion figure is eye-catching, but the real story is demand.
Unregulated gambling is not just growing because rogue sites exist. It is growing because parts of the regulated market still fail to match how people actually bet online.
That does not make unregulated sites safer. It does make the problem harder to solve.
If legal operators want more bettors inside regulated markets, they need to win on product as well as protection. Better prices, clearer withdrawals, fairer limits and payment methods that people actually use would do more than another warning banner.
The smart bettor’s takeaway is simple: check value, but check risk first. A generous market is not much use if the payout route falls apart when you win.
References
- References
- Global Gambling Black Market $5.9 Trillion in 2025 (iGaming Business)
- Global Unregulated Online Gambling Hit $5.9 Trillion in 2025 (Yogonet)
- Third Largest Economy? $5.9 Trillion Gambling Beyond Regulation (Forbes)
- Online Gambling Market Size & Forecast (Grand View Research)
