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Spain just pulled the plug. Authorities there have blocked access to both Polymarket and Kalshi, two of the biggest names in prediction markets, over what regulators call unlicensed gambling violations. Spanish users can no longer reach either platform, and neither company has said a word publicly about what happens next.
The move didn’t come out of nowhere. Spain has been watching online platforms that let people trade on event outcomes — elections, sports results, economic data — with growing suspicion. Regulators looked at what Polymarket and Kalshi actually do: users buy and sell shares based on predictions about future events, real money changes hands, and payouts depend on whether those predictions land correctly. Spanish authorities decided that’s gambling, full stop, and gambling in Spain requires a license. Neither platform had one. So the block went up.
What Polymarket and Kalshi Actually Do
Both platforms sit at the intersection of blockchain technology and speculative trading. Polymarket runs on-chain, mostly on Polygon, letting users stake crypto on binary outcomes. Kalshi operates in the U.S. as a regulated exchange — the Commodity Futures Trading Commission greenlit it as a designated contract market — but that American regulatory approval doesn’t travel. It means nothing in Madrid. Each country sets its own rules, and Spain’s rules say these activities need a local gambling license.
That’s the core problem for prediction markets globally. They don’t fit neatly into existing categories. They’re not quite a stock exchange, not quite a sportsbook, not quite a derivatives market. Regulators in different countries keep landing on different answers. The U.S. CFTC decided Kalshi runs a legitimate financial product. Spain’s gambling authority looked at the same basic concept and called it a bet. Both can be right under their own legal frameworks, which is exactly what makes cross-border operations so messy for these platforms.
Polymarket, which saw enormous traffic during the 2024 U.S. election cycle, built much of its user base on political prediction markets. Kalshi pushed hard into mainstream events too, adding markets on economic indicators and weather events alongside political races. Popularity, it turns out, attracts regulatory attention. The bigger these platforms get, the harder it is for national authorities to look away.
Spanish Users Cut Off, No Timeline for Resolution
Right now, Spanish users hit a wall when they try to access either site. The block is live. Neither Polymarket nor Kalshi has put out a statement, filed any public response, or said whether they plan to apply for a Spanish gambling license, challenge the decision legally, or simply accept that Spain isn’t a market they can serve. No details. Unclear when that changes, if it does.
That silence is probably strategic — companies in this position rarely want to say something that could complicate negotiations with regulators — but it leaves users with no answers. People who had open positions or funds on either platform in Spain are basically waiting with no information.
The platforms’ path forward isn’t obvious. Applying for a Spanish gambling license is an option, but it’s slow, expensive, and would require them to accept classification as gambling operators rather than financial market infrastructure, which creates its own complications in other jurisdictions. Fighting the block legally is another route, though Spanish courts have generally backed regulators on unlicensed gambling enforcement. A third option is doing nothing and writing Spain off as a market, which some smaller platforms have done when faced with similar blocks in Europe.
A Possible Template for Other Regulators
Spain probably won’t be the last. Prediction markets have been growing fast across Europe, Latin America, and Asia, and the legal status question hasn’t been resolved in most countries. Regulators elsewhere are watching what Spain does and how Polymarket and Kalshi respond. If the block sticks and the platforms don’t push back effectively, it becomes a template. Other national gambling authorities can point to Spain and say the precedent exists.
The broader prediction market industry has been trying to position itself as financial infrastructure rather than gambling for years. That framing worked well enough with the CFTC. It didn’t work in Spain. And it probably won’t work automatically in other jurisdictions with strong gambling regulatory bodies that have their own turf to protect.
For now, access restrictions remain in place. No negotiations confirmed, no legal challenge filed publicly, no licensing application announced.
Frequently Asked Questions
Why did Spain block Polymarket and Kalshi?
Spanish authorities determined that both platforms facilitate gambling without the required local license, violating Spanish gambling law, and moved to restrict access for users in the country.
Have Polymarket or Kalshi responded to the Spain block?
Neither platform has issued a public statement or disclosed any plans to seek a Spanish gambling license or challenge the regulatory decision as of now.
