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GCI Estimates Global Unregulated Online Gambling Now Worth $5.9 Trillion in Wagers

New Gaming Compliance International report puts the unlicensed market larger than the GDP of every country except the US and China; prediction markets already account for 8.7% of unregulated sportsbook revenue worldwide.

Category: iGaming News - Global · By Growl Games Editorial Team · Sun May 17 2026 · Updated Thu Jul 23 2026

GCI Estimates Global Unregulated Online Gambling Now Worth $5.9 Trillion in Wagers

Contents

1. Summary

A new report from research firm Gaming Compliance International (GCI), published this past week, estimates global unregulated online gambling generated $5.9 trillion in wagering value in 2025, up from $5.1 trillion in 2023 and $5.7 trillion in 2024. The figure exceeds the GDP of every country in the world except the United States ($30 trillion) and China ($19 trillion). GCI CEO Matt Holt argues regulated operators now hold just 22% of global gross gaming revenue, with 78% flowing through unlicensed channels. The report introduces a new three-bucket framework — regulated, unregulated, and "unacknowledged" — and identifies prediction markets as the fastest-growing edge of the third category. The release lands amid converging black-market data from the UK (£16.6 billion), Italy (€20 billion) and India, and ahead of the 2026 FIFA World Cup.

2. The Scale: $5.9 Trillion in 2025

GCI's $5.9 trillion figure covers total wagering volume flowing through unlicensed sports betting, online casinos, poker, crypto gambling and lottery products worldwide. Annual growth slowed to roughly 4% in 2025 from 12% in 2024, but the sector still added approximately $235 billion in new wagering activity year on year. By comparison, the legal global gambling market is projected by industry analysts to exceed $1 trillion by 2030, putting the unregulated share at roughly six times the size of the regulated channel by current GCI estimates. Holt's framing: "The scale of the unregulated online gambling sector is now undeniable. At $5.9 trillion in wagering value, this is one of the largest economic systems in the world." He added: "Regulators are not facing a marginal challenge, but a dominant one. The majority of activity is occurring beyond the regulated perimeter."

3. A New "Unacknowledged" Category

GCI's most consequential analytical contribution is splitting the market into three categories rather than two. The "unacknowledged" segment captures products that replicate the core mechanics of gambling — a stake, an element of chance, and a potential reward — without being formally classified as gambling under current regulations. The category includes social casinos, sweepstakes platforms, pseudo-financial products, skins trading, TikTok-based contests, and, most significantly, prediction markets. Per data cited by GCI from Forbes coverage, prediction-market products account for just 0.2% of legal US sports-betting profitability but already represent 8.7% of unregulated online sportsbook revenue globally. The report explicitly identifies platforms such as Kalshi and Polymarket as central to the debate: classified in the US as financial products under CFTC oversight but functioning, in GCI's view, as cross-border offshore betting in many other jurisdictions.

4. Regional Picture

Country-level data points reinforce GCI's macro estimate. The Betting and Gaming Council, citing H2 Gambling Capital data published on 8 May, puts UK black-market stakes at £16.6 billion ($21.25 billion) in 2025 — more than triple the 2019 level and double the 2023 figure. Italy's Data Room Nexus Observatory estimates the country's illegal online gambling market at approximately €20 billion annually, driven through smartphones, social media platforms and disposable betting websites despite Italy operating one of Europe's strictest gambling-advertising regimes. India's broader offshore black market is estimated at $2.3 billion in annual user losses by Indian government data cited at the time of August 2025's RMG ban. Indonesia has announced a nationwide campaign against illegal gambling and online fraud ahead of the 2026 FIFA World Cup, with officials warning the tournament could trigger another large jump in betting activity domestically.

5. The World Cup Multiplier

GCI expects unregulated-channel growth to accelerate around the 2026 FIFA World Cup, which kicks off 11 June across the US, Canada and Mexico. The legal handle for the tournament is forecast at approximately $3.1 billion in the US alone, with another $2.37 billion flowing through prediction-market and on-chain products for a combined $5.47 billion in legal and on-chain wagering. Major tournaments historically pull a disproportionate share of casual or first-time bettors, and Paysafe research has indicated 29% of US World Cup bettors will wager on a World Cup for the first time. Industry observers expect a meaningful share of that incremental volume to land outside licensed channels given offshore operators' wider product menus, fewer affordability checks and frictionless onboarding via crypto. The report also highlights the growing connection between crypto casinos and illegal sports-streaming networks — UK Campaign for Fairer Gambling data indicates 89% of illegal UK sports streams in 2024/25 featured advertising for operators not licensed in the UK, and illegal streams have more than doubled in three years to 3.6 billion.

6. Implications for Operators and Regulators

The GCI report lands at a moment when multiple jurisdictions are simultaneously tightening regulated-channel rules and ramping up enforcement against unlicensed operators. The UK launched its Illegal Gambling Taskforce on 13 May targeting payment flows and online ad inventory for unlicensed operators; Oklahoma overrode its governor's veto on 14 May to ban dual-currency sweepstakes casinos from 1 November; India's PROGA Act took effect 1 May. The American Gaming Association estimates US unregulated channels alone generate $53.9 billion in annual revenue and cost state tax authorities $15 billion. For regulated operators, the GCI figures are leverage: industry argues that further restrictions on licensed channels — affordability checks, advertising bans, higher duties — risk displacing more revenue to the unlicensed sector that already dwarfs the regulated market. For regulators, the figures reframe the enforcement question: the gap between the regulated perimeter and where activity actually occurs is no longer marginal but structural, and policy designed for an industry with 90%-plus licensed share may not apply when that share is closer to 22%.

Sources


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