KSA says unlicensed prediction markets are illegal in the Netherlands
The Kansspelautoriteit says prediction markets such as Polymarket and Kalshi fall under Dutch gambling law and are not permitted without a licence, the regulator said. The KSA told the report that it had addressed Polymarket over illegal gambling and that comparable sites could also face sanctions. Polymarket received an order subject to a penalty, while the report says Kalshi had not received a sanction.
The KSA’s position means unlicensed prediction-market operators may face enforcement even without an existing sanction.