German authorities have targeted an alleged €5.8 billion illegal online gambling operation, prompting renewed scrutiny of the country’s black-market estimates and regulatory framework.

German law enforcement authorities have carried out a major crackdown on a suspected illegal online gambling operation that allegedly processed more than €5.8 billion in wagers over a 30-month period.

More than 100 officers participated in coordinated searches across 11 premises, with the operation involving the Frankfurt public prosecutor’s office, Frankfurt tax investigators, the State Office for the Combat of Financial Crime in North Rhine-Westphalia and Frankfurt police.

Authorities seized several high-value vehicles, froze multiple bank accounts and secured an asset restraint order worth approximately €82 million. An arrest warrant was also executed as part of the investigation.

More than €5.8bn wagered

Prosecutors allege that five suspects operated online gambling services without the licences required under German law from at least July 2021.

Between mid-2021 and the end of 2023, customers are believed to have wagered approximately €5.86 billion through the platforms involved.

The investigation also extends beyond the provision of illegal gambling.

Authorities suspect significant tax evasion connected to the operation, with the projected tax shortfall for 2024 estimated at approximately €77.6 million.

The scale of the case has prompted Germany’s licensed gambling industry to renew its criticism of official estimates regarding the size of the country’s illegal market.

DSWV questions black-market estimates

The German Sports Betting Association (DSWV) welcomed the enforcement action and argued that the investigation demonstrates the potential scale of unlicensed gambling activity in Germany.

“This successful investigation clearly demonstrates the scale that the illegal gambling market has now reached,” DSWV president Mathias Dahms said.

The association represents licensed sports betting operators and has repeatedly called for stronger action against offshore and unlicensed providers.

Dahms highlighted the differences in player protection requirements between Germany’s regulated operators and illegal platforms. Unlicensed operators can operate without safeguards such as deposit limits, identity verification requirements and player exclusion mechanisms.

“Anyone who wants to strengthen player protection must therefore consistently crack down on illegal services and strengthen legal ones,” Dahms said.

The DSWV believes the findings from the investigation should now lead authorities to reassess existing estimates of Germany’s black market.

DOCV calls for regulatory changes

The German Online Casino Association (DOCV) also welcomed the law enforcement action but argued that the investigation highlights weaknesses within Germany’s existing regulatory framework.

DOCV board member Kevin O’Neal said the scale of the suspected operation raises further questions about the black-market estimates published by Germany’s gambling regulator, the Gemeinsame Glücksspielbehörde der Länder (GGL).

The GGL’s 2025 activity report estimated that the illegal market represented around 23% of Germany’s online gambling market in 2024, corresponding to approximately €547 million in gross gaming revenue.

The DOCV has disputed that assessment, pointing to Nielsen data suggesting the black-market share could instead be around 56%.

The significant difference between those estimates has become an important point of debate between the regulator and industry representatives over the effectiveness of Germany’s regulated gambling framework and its ability to channel players towards licensed operators.

Federal online casino licensing proposed

Beyond stronger enforcement, the DOCV is again calling for changes to how online casino games are regulated in Germany.

The association wants the country to introduce a unified federal licensing system for online casino games, alongside stronger enforcement mechanisms targeting illegal operators.

Germany currently regulates online gambling under the Interstate Treaty on Gambling, which entered into force in 2021 and created a national framework for products including online sports betting, poker and virtual slot machines. However, the licensing of certain online casino games remains subject to different arrangements at state level.

The DOCV argues that the ongoing review of the treaty should be used to establish a nationwide licensing model for online casino products.

That review is expected to conclude by the end of 2026 and could result in broader changes to Germany’s gambling regulatory framework.

Germany reassesses gambling framework

German regulators have already begun adjusting elements of the regulated online market.

In July, authorities decided to lift the €1 stake limit for online slots, while introducing requirements for operators to monitor player behaviour under the revised system.

The change indicated that regulators are prepared to reconsider parts of the framework ahead of the formal review of the Interstate Treaty.

The latest enforcement operation is likely to add further pressure to that discussion.

While the investigation concerns a specific suspected illegal operation, the reported €5.86 billion in wagers has provided industry groups with new ammunition in their argument that Germany’s unlicensed gambling market may be considerably larger than official estimates suggest.

With the Interstate Treaty under review, the debate is increasingly focused not only on enforcement against illegal operators, but also on whether the regulated market itself needs to become more competitive and accessible to improve channelisation.

Source: IGB