Dutch watchdog orders prediction market to halt

TLDR

Dutch gambling regulators have ordered crypto prediction platform Polymarket to stop serving Dutch users or face large recurring fines.

1. The Netherlands Gambling Authority told Polymarkets Dutch arm to halt all prediction betting for residents or risk fines of about 420,000 to 840,000 per week.
2. Regulators classify Polymarkets markets, including political bets, as illegal gambling rather than financial products, adding to a broader international crackdown on prediction markets.
3. Crypto users should expect stricter geo-blocking, more KYC, and possible spillover from Dutch moves, including a proposed 36% tax on unrealised gains that would also hit crypto.

Deep Dive

1. What The Regulator Did

The Netherlands Gambling Authority (Kansspelautoriteit, Ksa) issued an order to Polymarkets local operator, Adventure One, to immediately stop offering prediction markets to Dutch residents or face escalating penalties that can reach around 420,000 to 840,000 per week if it continues operating illegally.

Reports note that the platform allowed Dutch users to register, deposit through local banks, and bet on events including Dutch elections without a Dutch gambling license, which the Ksa treats as an unlicensed gambling service rather than a regulated financial product. One detailed summary confirms that Dutch users had placed tens of millions of euros in bets before the block.

2. Why Prediction Markets Are Being Targeted

The Ksa explicitly treats prediction markets as betting, stating that such wagers are illegal in the Netherlands even for licensed operators, especially when they concern political outcomes such as elections. In its notice, the regulator argued that these products pose social risks, including potential influence on elections, and so fall squarely under gambling law rather than capital markets law, as summarized in this Bitcoinist coverage.

This move fits a wider pattern. Germany, Belgium, France, Italy, and the U.K. have already blocked Polymarket, and the U.S. CFTC previously fined the platform $1.4 million for offering unregistered derivatives. The unresolved global question is whether event contracts are financial instruments or gambling, and multiple regulators are currently choosing the gambling interpretation.

3. What Crypto Users Should Watch Next

In the near term, watch for:

1. How strictly Polymarket geo-blocks Dutch users and whether Ksa actually levies the threatened weekly fines.
2. Whether other EU regulators follow the Dutch line and move further against event-based markets.
3. The trajectory of Dutch policy more broadly, including a separate proposal for a 36% annual tax on unrealised gains in liquid assets, including crypto, highlighted in recent Dutch coverage.

For prediction market users, the practical risk is fragmentation by jurisdiction: some contracts may stay tradable globally, while others vanish or become inaccessible in key countries.

Conclusion

Dutch regulators are treating Polymarkets markets as illegal gambling, not financial contracts, and are backing that view with the threat of large recurring fines. That stance reinforces a broader regulatory trend against event-based markets, especially where politics is involved, and combines with aggressive Dutch tax proposals to create a tougher environment for both prediction platforms and crypto investors in the country.