Spain Blocks Kalshi and Polymarket Access While Investigating Unlicensed Gambling Operations

Spain’s Ministry of Consumer Rights has blocked domestic access to Kalshi and Polymarket, two of the leading global prediction market platforms, while it investigates whether the companies are operating in violation of Spanish gambling law. The ministry announced on May 26 that it had launched formal disciplinary proceedings against both platforms, citing allegations that they lack the necessary administrative authorization to offer their services in the country.

The two platforms would remain blocked in Spain until the investigation is concluded, the ministry said in a statement. Authorities indicated the process of reaching a final decision is expected to take between three and four months. Both Kalshi and Polymarket allow users to trade financial contracts tied to the outcome of real-world events, including sporting events, political elections, and economic indicators.

Regulators Target Event Contract Platforms

The Spanish action follows a growing international pattern of regulators scrutinizing prediction market operators, which have expanded rapidly by operating in a regulatory gray zone between financial trading and traditional gambling. In the United States, Kalshi and Polymarket have claimed regulatory authority falls under the Commodity Futures Trading Commission rather than state gambling regulators, a position that has triggered lawsuits and legislative battles across multiple states.

Spain’s ministry described the platforms as allowing users “to bet on everything from the weather to political events” and said their operation without a gambling license raised serious concerns under Spanish consumer protection and gambling statutes. The disciplinary action signals that European regulators are moving at a faster pace than their American counterparts in demanding that prediction market operators comply with existing gambling frameworks.

What the Block Means Globally

Spain’s decision to block access entirely during the investigation period is a significant escalation. Most jurisdictions that have raised concerns about prediction markets have done so through letters, public statements, or nascent legislation rather than outright blocking. The Spanish move demonstrates that national gambling regulators in Europe are willing to act decisively when they believe platforms are operating outside the law.

For Kalshi and Polymarket, the Spanish block adds to an increasingly complicated global regulatory picture. Kalshi is backed by significant venture capital investment and recently scored a major victory when a U.S. federal court upheld its right to offer sports event contracts under CFTC oversight. Polymarket, meanwhile, is crypto-native and operates primarily through blockchain infrastructure. Neither company has publicly responded in detail to the Spanish ministry’s action as of the time of publication.

The prediction market debate has significant implications for bettors and investors alike. For those interested in understanding the regulatory distinctions, resources that explain prediction markets vs. sports betting or outline whether prediction markets are legal in various jurisdictions have become increasingly relevant as this legal battle plays out globally. The Spanish investigation is expected to conclude by late summer or early fall, at which point regulators will determine whether permanent licensing requirements or access restrictions are warranted.