Polymarket challenges Dutch ban and €420,000 fine in court over gambling classification

Polymarket is escalating its dispute with the Dutch gambling regulator, Kansspelautoriteit, to court to challenge a ban and a €420,000 enforcement penalty. While Polymarket argues its peer-to-peer event contracts are financial derivatives that belong under the Dutch Authority for the Financial Markets, the regulator maintains they are unlicensed games of chance. Even if Polymarket wins its financial classification argument, its contracts could face strict European bans on binary options for retail investors.

The legal dispute and regulatory classification

• ▪Polymarket is taking its dispute with the Dutch Gambling Authority, Kansspelautoriteit, to court to challenge a ban and a €420,000 enforcement penalty.
• ▪Polymarket's court challenge of the Kansspelautoriteit's June 23, 2026 decision argues its event contracts are financial products resembling futures or derivatives and should fall under the Dutch Authority for the Financial Markets rather than the Kansspelautoriteit.
• ▪The Kansspelautoriteit argues that Polymarket's contracts constitute illegal gambling under Dutch law because users put money at risk on uncertain future outcomes.

Enforcement actions and penalties

• ▪The Kansspelautoriteit ordered Polymarket operator Adventure One QSS Inc. to stop serving the Dutch market, imposing a €420,000 weekly penalty capped at €840,000.
• ▪Polymarket disputed a February 18, 2026 inspection finding, stating it had introduced extensive controls blocking Dutch IP addresses on that same day.
• ▪The Kansspelautoriteit rejected Adventure One QSS Inc.'s administrative objection on June 23, 2026, and subsequently moved to collect one unpaid €420,000 penalty in July 2026.

Arguments over peer-to-peer market structure

• ▪Polymarket argued its peer-to-peer service does not operate like a conventional bookmaker because users trade with each other, prices emerge from market demand, and there is no central prize pool.
• ▪The Kansspelautoriteit rejected Polymarket's peer-to-peer argument, stating that prediction markets are not a new type of activity and comparing them to betting exchanges and poker where operators facilitate peer-to-peer play.

Kansspelautoriteit regulatory actions

• ▪The Kansspelautoriteit objected to Polymarket's use of cryptocurrency, stating that licensed Dutch online gambling operators must use traceable payment methods rather than anonymous crypto.
• ▪The Kansspelautoriteit left open the possibility of a separate revenue-based fine against Polymarket operator Adventure One QSS Inc. in its January 20, 2026 order.

Financial regulation and binary options restrictions

• ▪The Dutch Authority for the Financial Markets has maintained a permanent restriction since 2019 banning the marketing, distribution, or sale of binary options to retail investors in the Netherlands.
• ▪Polymarket has been seeking Markets in Financial Instruments Directive treatment for its European contracts while holding discussions with European and United Kingdom regulators.
• ▪The United States Commodity Futures Trading Commission lists Polymarket US as a designated contract market and classifies several of its event contracts as binary options.
• ▪Critics argue that if Polymarket succeeds in classifying its contracts as financial products, they could face strict European retail investor restrictions governing binary options.

Debatable claims

• ▪Anonymous cryptocurrency payments are incompatible with regulated online betting
• ▪Prediction markets should be regulated as financial platforms rather than gambling services