German Court Upholds Wiesbaden Slot Machine Tax Increase Following Operator Challenge

The Hessian Higher Administrative Court in Kassel has upheld Wiesbaden’s decision to increase its slot machine tax from 5% to 7.5%, rejecting a legal challenge brought by gaming hall operators.

The higher rate, introduced on 1 January 2024, was intended to strengthen the German city’s finances and generate up to €1 million in additional revenue.

Operators argued that the increase placed an excessive burden on their businesses and could threaten their economic viability. However, the court found insufficient evidence that the tax had produced the alleged effect.

The decision is not yet legally binding, as the applicants can challenge the refusal to allow a further appeal before the Federal Administrative Court in Leipzig.

Operators Challenge Economic Impact Of Higher Tax

The dispute centred on Wiesbaden’s decision to increase the municipal tax applied to expenditure on gaming machines.

Andreas Braun, who owns four gaming halls in the city, was among those challenging the increase. He argued that the additional tax burden consumed operators’ profits and had a potentially destructive effect on their businesses.

Braun lodged an objection and constitutional complaint in April 2025, citing established German case law concerning the limits of municipal taxation.

Under that legal principle, a tax may be considered impermissible if its burden effectively prevents businesses from operating economically within a municipality.

The operators maintained that Wiesbaden’s revised rate approached that threshold, threatening their ability to maintain viable gaming hall operations.

Their challenge also raised procedural concerns about the decision-making process, alleging that members of the public had been excluded from a preparatory finance committee meeting without adequate justification.

Wiesbaden defended the increase as a legitimate municipal revenue measure introduced in response to financial pressures.

Court Finds Insufficient Evidence Of Threat To Businesses

The Hessian Higher Administrative Court rejected the operators’ arguments and upheld the validity of the municipal tax amendment.

Judges found no sufficient evidence that the increased rate had created a burden severe enough to prevent gaming hall businesses from operating.

The court pointed to the relatively stable number of gaming halls in Wiesbaden following the introduction of the higher tax as evidence against the claim that the measure had effectively eliminated the economic basis for operating such businesses.

It also determined that the alleged procedural irregularity involving the finance committee did not invalidate the tax by-law.

A separate argument concerning equal treatment was dismissed.

The court explained that gaming machines fall within the municipality’s taxation responsibilities, while taxation of casinos is administered at state level by Hesse. The different arrangements therefore did not establish that Wiesbaden’s tax was unlawful.

The ruling allows the 7.5% rate to remain in force, although the legal proceedings may continue.

The applicants retain the opportunity to challenge the court’s refusal to grant permission for a further appeal. Any such challenge would be considered by the Federal Administrative Court in Leipzig.

Illegal Gambling Concerns Form Part Of Wider Debate

The legal challenge also raised concerns about the potential relationship between restrictions on licensed gambling and the growth of unauthorised alternatives.

Braun referred to research suggesting that nearly half of respondents were considering using illegal gambling services because of restrictions affecting the regulated market.

The survey finding reflects respondents’ stated intentions rather than evidence that an equivalent proportion had actually moved to illegal operators. It also does not establish that Wiesbaden’s tax increase caused such behaviour.

The issue has nevertheless attracted renewed attention following a major investigation into suspected illegal online gambling in Germany.

Authorities recently conducted enforcement action against an alleged unauthorised operation suspected of facilitating approximately €5.86 billion in wagers over a 30-month period.

The German Sports Betting Association (DSWV), which represents licensed sports betting operators, welcomed the investigation and called attention to the scale of the illegal market.

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

The enforcement case is separate from the Wiesbaden tax dispute and does not establish a direct connection between municipal gaming machine taxation and illegal online gambling activity.

For Wiesbaden’s licensed gaming hall operators, the immediate outcome is that the higher tax remains in place, subject to any further proceedings before Germany’s Federal Administrative Court.