Report: Japanese Gamblers Risked $45 Billion in Illegal Online Gambling
Report: Japanese Gamblers Risked $45 Billion Illegally in Online Gambling
- Authorities Highlight the Surge in Illegal Online Gambling
- Concerns Raised Over Unregulated Sports Betting
- Japan Preparing to Launch Its First Official Casino
In Japan, gambling laws are tightly regulated, primarily allowing state-run lotteries, sports lotteries, and parimutuel betting on horse races and motorsports; while traditional gambling remains strictly controlled, the landscape is evolving with the rise of online gambling platforms. However, significant changes are on the horizon with the upcoming opening of MGM Osaka, the country’s first licensed brick-and-mortar casino.

Despite strict regulations, illegal gambling is rampant in Japan, with recent findings from the Council of Sports Ecosystem Promotion revealing that citizens wagered approximately 6.45 trillion yen (around US$45 billion) on unregulated online gambling platforms in 2024.
Unlike most legal sports betting environments where private operators manage the market, the Japanese government maintains a monopoly through its sports lottery known as “toto,” which supports the Sports Promotion Fund. This governmental control constrains the betting limits, pushing many gamblers toward unregulated offshore platforms where they seek better odds and larger bets.
Growing Concern
The illegal online gambling assessment, supported by Japan’s National Police Agency, considered data on individuals prosecuted for illegal gambling and insights from regulated international iGaming operators. The findings indicate a thriving market for illegal online sports betting in Japan.
Approximately 3.37 million individuals are estimated to have engaged with illegal offshore online casinos in 2024, wagering around 1.2 trillion yen. The unregulated sports gambling sector is significantly larger, accounting for at least 4.9 trillion yen in bets, predominantly on soccer.
“The investigation unveiled that several foreign gambling websites available in Japan might infringe on rights involving copyright and likeness,” noted the report. “Many bettors claim ignorance regarding the legality of their actions when investigated.”
Some leading jurisdictions for offshore betting include the Philippines, Malta, Curacao, and Ukraine, where marketing to foreign gamblers is permitted in exchange for tax revenue shares. However, these platforms often lack consumer protections, which raises concerns about the fairness in gambling operations.
Pachinko: A Unique Form of Entertainment
Alongside lottery systems and the anticipated Osaka casino, there are also thousands of pachinko parlors across the nation.
While Japan does not classify pachinko as gambling, players often exchange the prizes won for cash at associated facilities, effectively making it a cash-based activity, albeit unofficially.
These cash redemption facilities, usually operated by the same owners as the pachinko parlors, allow customers to convert their amusement tickets into cash, blurring the lines between gaming and gambling in public perception.
Conclusion
Japan’s gambling landscape continues to evolve, yet illegal online gambling represents a significant portion of the activity within this sector, attracting millions to unregulated platforms. As the country prepares to open its first legal casino, the impact of these changes, combined with public awareness of the gambling laws, will be critical in shaping the future of gambling in Japan.
As gambling regulations adapt, it’ll be essential to ensure consumer protection, promote responsible gambling, and mitigate the risks associated with illegal gambling activities.



