For years, most crypto-assets fell outside the financial rules that govern banks and investments. The European Union's Markets in Crypto-Assets Regulation, which came fully into force across the EU in December 2024, was the first major attempt to bring crypto under one clear set of rules.
The dilemma
By the early 2020s, the European Union had a confusing situation on its hands. Some crypto-assets were covered by existing financial rules, but many were not, including most stablecoins and so-called utility tokens. Each EU country was taking its own approach. Crypto companies took advantage of this by basing themselves wherever the rules were loosest. Meanwhile, the collapse of major crypto ventures, including the Terra/Luna stablecoin and the FTX exchange, wiped out billions of dollars belonging to ordinary investors. The harm to consumers had become too large to ignore, and the EU's single market needed one set of rules rather than 27 different ones.
The regulatory gap
What the EU needed was a single set of rules that applied across all 27 member states, covering both the companies that issue crypto-assets and the companies that trade or hold them for customers. It also needed specific rules for stablecoins, which are crypto-assets designed to hold a steady value, usually by being backed by reserves. Stablecoins matter differently from speculative tokens, because if a widely used stablecoin fails, it can affect the broader financial system and even a country's control over its own currency.
The approach
The Markets in Crypto-Assets Regulation, known as MiCA, was adopted by the EU in 2023 and came into force in stages through December 2024. It requires companies issuing crypto-assets to publish a detailed document, similar to a prospectus, explaining what they are selling. It requires companies that trade or hold crypto for customers to be formally authorised and supervised, much like other financial firms. And it sets strict rules for stablecoins, including requirements about the reserves backing them and how they are governed. The European Securities and Markets Authority and the European Banking Authority were given the job of writing the detailed technical standards that make the regulation work in practice. The reasoning was that one comprehensive set of rules, agreed in advance at EU level, would produce a more stable and trustworthy market than 27 different national approaches, even if it created some friction for innovation along the way.
Results achieved
MiCA's rules for stablecoins took effect in June 2024, and the rest of the regime followed in December 2024. Major crypto exchanges have responded in one of two ways. Some have secured authorisation in EU countries so they can keep operating. Others have restricted access for EU customers rather than comply. Stablecoins that do not meet the new rules have been removed from regulated trading platforms. The two EU regulators responsible continue to publish technical standards and guidance during a transition period.
The trade-offs are visible. Some crypto activity has moved outside the EU, particularly companies that could not or would not meet the strict rules on stablecoin reserves and governance. EU regulators argue this is exactly what the rules are meant to do. The regime is designed to filter out activity that cannot meet the required standard, rather than to keep every business in the market.
The transferable lesson
A comprehensive set of rules agreed in advance works when the regulator accepts that some businesses will leave rather than comply, and when leaving the market is a real cost to those businesses. MiCA works partly because the EU market is so large that walking away from it is expensive. A crypto company can afford to ignore a small country's rules. It cannot easily afford to ignore 450 million consumers. Smaller countries trying to copy the MiCA model run into this problem. Their market is not big enough to make their rules stick the same way.
