The European Securities and Markets Authority (ESMA) has recently turned its attention to two prominent prediction‑market platforms, Polymarket and Kalshi, raising questions about the legality of their operations within the European Union. The regulator’s concerns stem from the possibility that the contracts offered by these platforms—often referred to as event contracts—might fall under several existing regulatory frameworks that either prohibit or tightly control such financial products.
At the heart of ESMA’s inquiry is the classification of these event contracts. In the EU, binary options have been subject to a blanket ban since 2018, following widespread concerns about their use in speculative gambling and the associated risk to retail investors.
Binary options are essentially all‑or‑nothing bets on the outcome of a specific event, and they share many characteristics with the contracts offered on prediction‑market platforms. If the contracts on Polymarket and Kalshi are deemed to be binary options, they would be automatically prohibited under the EU’s current legislation, which aims to protect consumers from high‑risk, opaque financial products. Beyond the binary‑options prohibition, ESMA also highlighted the relevance of the Markets in Crypto‑Assets Regulation (MiCA), which came into force to create a harmonised framework for crypto‑related assets across the EU. MiCA defines a broad range of crypto‑assets, including utility tokens, asset‑referenced tokens, and e‑money tokens, and sets out licensing and compliance requirements for issuers and service providers.
If the event contracts on Polymarket or Kalshi are classified as crypto‑assets—particularly as asset‑referenced tokens that derive their value from the outcome of real‑world events—then the platforms may need to obtain a MiCA licence, implement robust consumer‑protection measures, and adhere to stringent transparency and reporting obligations. In addition to EU‑wide regulations, national gambling laws could also come into play. Many EU member states maintain their own statutes governing betting and gaming activities, which often include provisions for “games of chance” that involve predicting future events. If the event contracts are interpreted as forms of gambling rather than financial instruments, the platforms might be required to secure gambling licences in each jurisdiction where they operate, comply with age‑verification protocols, and implement responsible‑gaming safeguards.
ESMA’s warning underscores a broader regulatory challenge: the rapid evolution of fintech and digital‑asset platforms has outpaced traditional supervisory frameworks, leaving gaps that can expose consumers to unanticipated risks. By flagging potential overlaps between event contracts and existing bans or licensing regimes, the regulator is signalling its intention to close those gaps and ensure that innovative financial products are brought under appropriate oversight. For Polymarket and Kalshi, the implications are significant. Both platforms have built their business models around allowing users to trade on the outcomes of real‑world events—ranging from political elections to sports results and economic indicators.
To continue operating within the EU, they may need to undertake a comprehensive legal review, possibly redesign certain product features, and engage with regulators to obtain the necessary authorisations. This could involve restructuring contracts to meet the definition of a financial instrument rather than a gambling product, enhancing disclosure of risks, and implementing stronger anti‑money‑laundering controls. The situation also serves as a cautionary tale for other emerging fintech firms that operate at the intersection of finance, technology, and prediction markets. As regulators across the globe become more vigilant, firms must proactively assess how their offerings align with existing legal frameworks and be prepared to adapt quickly to regulatory feedback.
In summary, ESMA’s recent statements raise critical questions about the regulatory status of Polymarket and Kalshi’s event contracts within the EU. The platforms could be subject to the EU’s binary‑options ban, the MiCA crypto‑asset regime, or national gambling laws, each of which carries its own set of licensing and compliance requirements. The regulator’s focus on these potential gaps highlights the need for clear, harmonised rules that can accommodate innovative financial products while safeguarding investors and maintaining market integrity.
As the dialogue between regulators and fintech innovators continues, the outcome will likely shape the future landscape of prediction‑market services across Europe.