The Dutch gambling regulator Kansspelautoriteit (KSA) published a collection decision on 16 June against Adventure One QSS Inc., the operator of prediction market platform Polymarket, for €420,000 (approximately $487,000). The penalty stems from the platform halting its service to Dutch users one day after the 17 February compliance deadline set by the regulator. The KSA had ordered Polymarket to cease offering services to Dutch residents within four weeks of a January order or face weekly fines of €420,000, capped at €840,000—only one week's penalty was ultimately forfeited. Polymarket has filed an objection to the collection, arguing the regulator's re-check occurred while geofencing measures were still being deployed. The case highlights the divergence between European regulators, who classify prediction markets as gambling products, and US authorities, who view them as financial instruments.
KSA Collects €420,000 Penalty for One-Day Compliance Delay
The collection decision published on 16 June addresses a penalty that was automatically triggered when Polymarket stopped offering services to Dutch users one day after the 17 February deadline. The KSA conducted a re-check on 17 February and found that bets could still be placed, resulting in the forfeiture of one weekly increment of €420,000. The penalty is not a new fine issued on 16 June but rather the formalization of a collection for non-compliance that occurred in February. The collection notice was sent to Adventure One QSS Inc. on 19 May and made public this week. Polymarket has been operating in view-only mode for Dutch users since February.
January Order Required Four-Week Compliance Window
The case originated with a January order made public in mid-February, in which the KSA determined that Polymarket offered games of chance to Dutch users without the required license, violating the country's Betting and Gaming Act. The investigation was triggered by betting activity on the October 2025 Dutch parliamentary elections, where users could stake tens of millions on political outcomes. KSA investigators confirmed that Dutch residents could register on the platform, deposit euros through a local bank, and wager on Dutch political markets. The regulator ordered the platform to cease offering its services to Dutch residents within four weeks or face a €420,000 fine per week, capped at €840,000. The KSA's director of licensing and supervision, Ella Seijsener, stated in February that such bets are not allowed on the Dutch market under any circumstances, even for licensed operators, citing social risks including the possible influence of these markets on elections.
Polymarket Files Objection Citing Technical Deployment Issues
Adventure One QSS Inc. has filed an objection to the collection, arguing that the KSA's re-check was conducted while the platform's geofencing measures were still being deployed. The company contends that the regulator gave insufficient consideration to the technical complexity of blocking access for an entire country. The KSA stated in February that it could still levy a separate punitive fine for the illegal offering itself, sized according to the operator's turnover, even though Polymarket has already exited the Dutch market.
FAQ
What penalty did the Dutch regulator collect from Polymarket's operator?
The KSA collected €420,000 (approximately $487,000) from Adventure One QSS Inc., Polymarket's operator, for halting service to Dutch users one day after the 17 February deadline.
Why did the KSA order Polymarket to stop serving Dutch users?
The KSA found that Polymarket offered games of chance to Dutch users without a license, violating the Betting and Gaming Act. The investigation was triggered by betting on the October 2025 Dutch parliamentary elections, where Dutch residents could register, deposit euros, and wager on political markets.
Has Polymarket responded to the penalty collection?
Polymarket has filed an objection to the collection, arguing that the KSA's re-check occurred while geofencing measures were still being deployed and that the regulator did not adequately account for the technical complexity of blocking an entire country.
