German authorities have raided an alleged illegal online gambling operation accused of processing around €5.86 billion in wagers between July 2021 and the end of 2023. More than 100 officers searched 11 properties in Frankfurt and the wider Rhine-Main region on Sept. 8, and prosecutors executed an arrest warrant against one of five people suspected of running the platforms without a German gambling license.
Frankfurt prosecutors have been investigating the group for more than three years over suspected commercial and organized illegal gambling. The five suspects allegedly offered online gambling to German customers from at least July 2021, without the authorization the country’s regulated system requires. Names of the platforms and companies involved haven’t been released, and none of the allegations has been tested in court yet.
Roughly €82 million in assets was secured during the operation, including high-value vehicles and money held across multiple bank accounts. Prosecutors also suspect the group of failing to pay gambling taxes in full, putting the estimated tax loss for 2024 alone at €77.6 million. The investigation is still active, and authorities haven’t said whether more arrests are coming.
That €5.86 billion covers the total value of wagers processed through the alleged operation, not casino revenue or player losses. Gambling turnover counts the same funds being wagered over and over, which makes it considerably larger than whatever an operator actually keeps. Even allowing for that, the volume is unusually high for a single publicly disclosed German enforcement case.
German Sports Betting Association president Mathias Dahms held the case up as evidence of how large unlicensed gambling can get in Germany. The DSWV welcomed the investigation and pointed out that illegal operators skip the controls licensed companies have to follow, including player identification, deposit limits, self-exclusion requirements, and other consumer protection measures.
Germany’s regulated online gambling framework runs on the 2021 State Treaty on Gambling, which created a national licensing system covering online slots, poker, and sports betting. The Joint Gambling Authority of the Federal States, or GGL, keeps the official whitelist of authorized operators and can go after unlicensed websites through prohibition orders, payment blocking, and access restrictions inside Germany. Overseas operators still need German authorization if they target customers in the country.
The GGL opened 83 prohibition proceedings against illegal gambling operators during 2024 and reviewed 1,053 websites tied to suspected unauthorized gambling. That enforcement made 459 illegal websites inaccessible through prohibition procedures, with another 657 restricted via network blocking. Payment blocking also stopped commonly used payment providers from serving 165 illegal gambling websites.
A GGL-commissioned study published in March put unlicensed operators at 22.97% of Germany’s online gambling market in 2024, leaving the legal market with a channelization rate of 77.03%. The regulator has adopted those figures as its current measure of the black market while Germany assesses how well the 2021 treaty has worked and prepares for the next licensing cycle starting in 2027.
Illegal operators keep reaching German customers regardless of all that enforcement. A July investigation by German public broadcaster BR found a network of around 120 unlicensed gambling sites aimed specifically at players in Germany, which shows how easily offshore businesses can swap domains and keep marketing after individual websites get restricted.
The Frankfurt case leaves five people under investigation, one suspected organizer under arrest, and about €82 million in assets in the hands of authorities. Prosecutors are still working through both the alleged gambling operation and the suspected tax offences, after tracing €5.86 billion in wagers through the platforms across roughly two and a half years.