The estimated tax loss caused by a single illegal online gambling operator amounts to more than one-third of the tax revenue generated by the entire legal market for virtual slot machine games in Germany. For the first time, specific financial data from an illicit operation can be directly compared against official statistics from the regulated sector, offering a rare window into the true scale of Germany’s online gambling black market.
According to a study published in March 2026 by the Joint Gambling Authority of the German States (GGL), illegal operators account for approximately 23 percent of gross gaming revenue (GGR), leaving the legal market with roughly 77 percent. However, new findings from a criminal tax investigation conducted by the Frankfurt Public Prosecutor’s Office into illegal operator Platincasino raise critical questions regarding the reliability of these official estimates.
77.6 million euros in tax losses from a single provider
For the 2024 financial year, the Frankfurt Public Prosecutor’s Office estimates the alleged tax loss generated by Platincasino at 77.6 million euros. To contextualize this figure, the entire legal market for virtual slot games, presumed to be Platincasino’s primary product line, contributed approximately 213.5 million euros in tax revenue to the German government in 2024. Consequently, the Platincasino case alone accounts for 36.3 percent of total legal tax revenue.
Crucially, this analysis relies on a direct tax-to-tax comparison. On one side stands the 213.5 million euros paid by the legal online slot market; on the other is the 77.6 million euros allegedly evaded by a single illegal provider within the exact same tax category and time period. Because both figures share an identical tax base, analysts do not need to grapple with complex estimations involving wagers or GGR.
The GGL typically measures black market share through GGR. Yet, this metric can distort actual player activity: because illegal operators do not bear German tax burdens, they often offer higher player returns, generating lower GGR relative to the total betting volume handled. Thus, comparing tax liabilities provides a much clearer benchmark for evaluating illicit market size.
Challenging official estimates and broader studies
While the Platincasino proceedings represent an isolated case, they carry profound implications. In 2024, the GGL identified 212 illegal gambling operators managing 858 German-language websites, relying primarily on estimation models due to the absence of mandatory reporting from unlicensed entities. Critics argue that if a single line of inquiry uncovers tax evasion of this magnitude, the GGL must clarify how these findings reconcile with its broader calculations.
Independent analyses suggest that Germany’s black market is substantially larger than official figures indicate. The Handelsblatt Research Institute estimates that the illegal share of the online gambling market exceeds 50 percent, rising to between 70 and 80 percent for online casinos and virtual slots. Similarly, a study by Gunther Schnabl examining time spent on gambling websites concludes that the black market share hovers around 50 percent.
The regulatory evaluation framework
The primary objective of Germany’s State Treaty on Gaming (GlüStV) is to protect consumers and steer demand toward state-regulated offerings. Assessing whether this framework is succeeding depends entirely on obtaining accurate data on the underground market.
As the State Treaty reaches its five-year evaluation mark under Article 32, industry stakeholders argue that law enforcement discoveries must be fully incorporated into regulatory reviews. To effectively combat illicit operations and ensure player protection mechanisms are functioning, authorities must first establish a realistic and accurate measurement of the black market’s true footprint.
