Europe's top financial watchdog issued its second formal intervention this year against the prediction market industry on September 11, 2026, declaring that Polymarket and Kalshi hold no valid authorization to offer or sell event contracts to users in any of the European Union's 27 member states.

The European Securities and Markets Authority (ESMA) also questioned the logic of the platforms' existing geo-blocking measures, noting that incomplete country-level restrictions do not address a regulatory gap that applies uniformly across the entire bloc.

The statement adds formal regulatory weight to a crackdown that has been building for months. At least eight EU and European countries have already imposed access restrictions on one or both platforms, a count that includes Switzerland, which operates outside the EU and enforces restrictions through its own independent authority rather than under ESMA's mandate.

Spain ordered ISPs to block Polymarket and Kalshi in May 2026, citing the absence of gaming licences. France issued a full ISP-level block on Polymarket in July. Portugal moved earlier, in January 2026, after more than $120 million in bets flowed through the platform around its presidential election. Germany's gambling regulator, the GGL (Gemeinsame Glücksspielbehörde der Länder), opened a separate investigation in September into Predictstreet, a smaller competitor, over unlicensed World Cup marketing. Belgium, Poland, and Switzerland have also implemented similar access restrictions.

What ESMA Is Actually Saying

ESMA's core argument rests on classification. The regulator identified three possible frameworks under which prediction contracts could fall. The first is MiFID II, the EU's main financial markets law, which has banned binary options products for retail investors since 2018. The second is MiCA, the EU's crypto-asset framework, which could apply to blockchain-based contracts that do not meet the definition of a financial instrument. The third is national gambling law, which is already being applied by several member states acting independently. ESMA made clear that a product's commercial label does not determine its legal status. What matters, the regulator stated in its July 3 public statement, is how the contract actually functions as a derivative.

The watchdog also flagged the VPN problem directly. Platform geo-controls, it said, are of "uncertain" effectiveness because users can mask their location to bypass country-level blocks.

This concern is not limited to Europe. India's Ministry of Electronics and Information Technology issued a formal blocking order against Polymarket in May 2026, classifying event contracts as prohibited online money gaming. A similar order targeting Kalshi was reportedly in preparation. Despite both bans, reports indicate that users in India continued to be able to register and trade on both platforms, a pattern that mirrors the incomplete enforcement ESMA described in its European analysis.

The Scale of What Is Being Scrutinised

Combined monthly trading volume on Polymarket and Kalshi reached approximately $24 billion in April 2026, up from under $5 billion in September 2025. Their combined Q4 2025 volume of $20.8 billion (Polymarket $12 billion, Kalshi $8.8 billion) exceeded the quarterly turnover of some regional European stock exchanges.

Polymarket, which runs on the Polygon blockchain and settles in the USDC stablecoin, held roughly 90 percent of total crypto prediction market value locked at its January 2026 peak of around $330 million.

Monthly unique active wallets across major platforms nearly tripled in the six months to February 2026, reaching 840,000. Kalshi disclosed over $400 million in monthly commodity trading volume in August 2026, a sign that the sector is expanding well beyond political event markets.

What This Means Outside the US and Europe

For users in Sub-Saharan Africa, the ESMA action does not impose any direct restrictions. Polymarket's non-custodial architecture requires only a crypto wallet and an internet connection, making it accessible in markets like Nigeria, Kenya, and Ghana where stablecoin adoption is growing and formal brokerage access remains limited. However, the regulatory trend carries indirect risk. If major platforms respond to European and Indian pressure by tightening compliance globally, geo-blocking could extend to additional regions. Nigerian and Kenyan financial regulators are currently developing broader digital asset frameworks, and ESMA's articulation of investor protection risks, including insider trading and market manipulation, gives those bodies a ready-made justification to act.

Switzerland's independent financial authority Gespa, whose director Manuel Richard was cited in reporting by Cryptopolitan, listed insider trading, market manipulation, and money laundering as the three primary risks justifying enforcement against unlicensed prediction platforms. ESMA used similar framing in its September report, stating that the sector raises "investor-protection and market-integrity concerns, including risks linked to insider trading and market manipulation."

What Comes Next

For protocol developers building event contract infrastructure on Polygon or other EVM-compatible chains, the ESMA position carries a specific warning. If regulators successfully establish that on-chain derivatives require MiFID II authorization, it would set a precedent affecting any permissionless protocol operating on the same logic, not just Polymarket or Kalshi. Implementing jurisdiction-based access controls at the smart contract layer is technically complex and poses a significant architectural challenge for decentralized applications.

Neither platform currently holds a retail financial services licence in any EU member state.