Circle Internet Financial, the global financial technology firm and issuer of the world’s second-largest stablecoin, USDC, has formally called upon the European Union to reconsider and refine critical components of its landmark crypto-asset regulatory framework. In a detailed submission to the European Commission’s consultation on the Markets in Crypto-Assets (MiCA) regulation, Circle argued that current provisions governing stablecoin reserves and issuance structures are inadvertently pushing the world’s most prominent digital assets outside of Europe’s regulatory reach. This move highlights a growing tension between the EU’s desire for stringent financial oversight and the practical realities of a globalized, 24/7 digital asset market.
The submission arrives at a pivotal moment for the European digital finance landscape. While MiCA has been lauded as the first comprehensive regulatory regime for crypto-assets by a major jurisdiction, Circle contends that specific technical requirements may hinder the regulation’s primary goal: bringing digital asset activity into a safe, transparent, and regulated environment. By framing its recommendations as "refinements," Circle aims to bolster the framework’s efficacy while ensuring that European users and businesses maintain access to global liquidity.
The Gap Between Regulation and Market Reality
A central pillar of Circle’s argument is the current disconnect between MiCA-regulated tokens and the broader global stablecoin market. According to data provided in Circle’s response, of the top 25 stablecoins by market capitalization globally, only three are currently regulated under the MiCA framework. This statistic suggests that the vast majority of stablecoin activity—including the use of Tether (USDT), which remains the dominant player by volume—continues to occur through entities that have not yet sought or achieved compliance with the EU’s new standards.
Circle warns that if the regulatory barriers remain too high or technically impractical, European market participants will be forced to choose between using compliant but less liquid local tokens or accessing global liquidity through "offshore" and unregulated channels. This dynamic, Circle argues, creates a "regulatory perimeter" issue where the tokens most widely used by the global crypto-economy remain beyond the oversight of European authorities, potentially increasing systemic risk rather than mitigating it.
To address this, Circle has urged the European Commission to preserve and clarify "multi-issuance" structures. This arrangement allows a globally circulating stablecoin to be co-issued by an EU-authorized entity alongside its foreign-regulated counterpart. Without such a mechanism, a global stablecoin issuer might be forced to fragment its liquidity between an "EU-only" version of a token and a "Rest of World" version, a move that would likely reduce the utility of the regulated European token and drive users toward unregulated alternatives.
The Reserve Requirement Controversy: Banking Risk vs. Stability
Perhaps the most technical and contentious portion of Circle’s submission involves the management of stablecoin reserves. Under the current MiCA rules, issuers of e-money tokens (EMTs) are required to hold a significant portion of their backing assets in commercial bank deposits. Specifically, the regulation mandates that at least 30% of reserves must be held in bank deposits, a figure that rises to 60% for stablecoins classified as "significant"—a designation based on market cap, number of holders, and transaction volume.
Circle, echoing concerns previously raised by the European Central Bank (ECB), argues that this mandate actually increases the risk profile of stablecoins. By forcing issuers to keep more than half of their reserves in commercial banks, the regulation exposes the stablecoin—and by extension, its holders—to the credit and liquidity risks of the banking sector. Circle points to the March 2023 banking crisis in the United States, where the collapse of Silicon Valley Bank (SVB) temporarily impacted the peg of USDC because a portion of its cash reserves was held at that institution.
In its response, Circle advocated for a more flexible liquidity requirement that prioritizes highly liquid, low-risk assets like short-term government bonds over commercial bank deposits. The firm argues that government-backed securities are generally more resilient during periods of financial stress than private bank deposits. Furthermore, Circle requested that regulators scrap the 35% cap on single-sovereign exposure, which currently limits how much of a reserve can be invested in the debt of a single nation, and the rules limiting how much can be held at any one bank. Circle contends that these concentration limits force large-scale issuers to spread reserves across dozens of smaller, potentially less stable banks, thereby complicating risk management and increasing operational complexity.
A Chronology of MiCA Implementation
The push for revision comes as the EU enters a critical phase of MiCA implementation. The journey toward this regulatory framework began in 2020, spurred by the potential threat to monetary sovereignty posed by Facebook’s proposed (and later abandoned) Libra/Diem project.
- September 2020: The European Commission introduced the initial proposal for MiCA as part of a broader Digital Finance Package.
- April 2023: The European Parliament officially approved MiCA, marking the first time a major economic bloc established a unified set of rules for the crypto industry.
- June 30, 2024: The provisions specifically governing stablecoins (Asset-Referenced Tokens and E-Money Tokens) came into effect.
- December 30, 2024: The remaining provisions of MiCA, covering Crypto-Asset Service Providers (CASPs) such as exchanges and custodians, are set to be fully implemented.
- 2025–2027: The European Commission is scheduled to conduct periodic reviews of the regulation’s impact, with a major overhaul anticipated in 2027 to address emerging issues like decentralized finance (DeFi) and foreign-issued tokens.
Circle’s current submission is a strategic attempt to influence this review process early, ensuring that the "Phase 2" of MiCA adjustments addresses the practical hurdles encountered during the first year of its application.

The Geopolitical Context: The Battle for Stablecoin Dominance
The debate over MiCA is not occurring in a vacuum. It is part of a larger geopolitical contest for dominance in the digital asset space. While the EU has been a first mover in regulation, the United States remains the primary hub for stablecoin issuance, with dollar-pegged tokens accounting for over 90% of the total stablecoin market value.
In Washington, lawmakers are increasingly framing stablecoins as a strategic tool for maintaining the US dollar’s status as the world’s primary reserve currency. By allowing digital dollars to circulate globally on blockchain networks, the US can extend the reach of its financial system into emerging markets and digital-native ecosystems. Circle has been a vocal proponent of this "Internet Dollar" narrative, and its push for MiCA reform can be seen as an effort to ensure that US-led stablecoin projects can operate seamlessly within the European legal framework without sacrificing their global utility.
Conversely, European regulators are concerned about "euroization" and the potential for foreign-denominated stablecoins to undermine the European Central Bank’s control over the Eurozone’s monetary policy. This tension explains the EU’s strict requirements for "significant" tokens and its desire to keep stablecoin activity within tightly regulated, bank-centric structures.
Reactions and Stakeholder Perspectives
Circle is not alone in its concerns. Several major cryptocurrency exchanges operating in Europe have expressed anxiety regarding the transition to full MiCA compliance. Platforms like Binance and OKX have already begun adjusting their product offerings for European users, in some cases restricting access to "unauthorized" stablecoins to avoid falling foul of the new rules.
Industry groups such as Blockchain for Europe and the European Crypto Initiative (EUCI) have generally supported the move toward regulation but have cautioned that overly prescriptive rules on reserve management could stifle innovation. On the other side of the debate, consumer advocacy groups and some traditional banking lobbyists have urged the Commission to maintain high reserve requirements, arguing that stablecoins should be treated with the same level of caution as traditional deposits to ensure consumer protection.
The European Central Bank has maintained a cautious stance, repeatedly emphasizing that stablecoins must be subject to "same risk, same regulation" principles. However, the ECB’s own research has occasionally highlighted the risks of banking sector contagion if stablecoin reserves are too heavily concentrated in commercial banks, providing some intellectual backing to Circle’s position.
Analysis of Implications: What Happens Next?
The outcome of this consultation will have far-reaching implications for the future of digital finance in Europe. If the European Commission adopts Circle’s recommendations, it could lead to a surge in MiCA-compliant stablecoin issuance, as global players find the framework more compatible with their existing business models. This would likely increase the variety and liquidity of regulated tokens available to European consumers.
However, if the Commission remains firm on its current reserve requirements and concentration limits, the market may see a continued bifurcation. European users might find themselves limited to a small number of compliant tokens with lower liquidity, while the bulk of global innovation and trading continues to happen offshore. This could potentially lead to a "brain drain" of crypto-native firms from the EU to jurisdictions with more flexible frameworks, such as the United Arab Emirates or parts of Southeast Asia.
Furthermore, the 2027 review of MiCA will likely be the most significant milestone for the industry. By then, regulators will have several years of data on how the current rules have performed. If Circle’s warnings about banking sector risk prove prescient—for instance, if a bank failure were to impact a MiCA-regulated stablecoin—the calls for a shift toward government bond-backed reserves will become impossible to ignore.
Conclusion
Circle’s push for a MiCA overhaul reflects the maturation of the digital asset industry. No longer content with operating in a legal "grey zone," major issuers are now actively lobbying for regulations that are both rigorous and practical. For the European Union, the challenge lies in balancing its commitment to financial stability and sovereignty with the need to remain a competitive and attractive hub for the next generation of financial technology.
As Brussels prepares for the next iteration of its crypto rulebook, the arguments presented by Circle will serve as a crucial test case. Whether the EU chooses to double down on its bank-centric approach or pivot toward the more flexible, bond-heavy model favored by global issuers will determine Europe’s place in the evolving global financial architecture for decades to come. For now, the digital asset world watches closely, as the "Gold Standard" of crypto regulation undergoes its first major stress test.








