“Significant” Is Not a Medal: USDC Becomes the First Significant Stablecoin Under MiCA, and Circle’s Lobbying Just Proved the Rule Is Working

On October 14, the European Banking Authority classified USDC as the EU’s first “significant e-money token,” moving reserve and liquidity oversight from Paris to Brussels starting November 12. Thirteen days earlier, Circle had publicly opposed exactly this rule.

“Significant” Is a Trigger, Not a Badge of Honor

On October 14, 2026, the European Banking Authority (EBA) announced that USDC, issued in the EU by Circle Internet Financial Europe SAS, has become the first e-money token (EMT) classified as “significant” under the Markets in Crypto-Assets Regulation (MiCA). The EBA said: “There are currently 45 EMTs in the European Union, which have been notified under MiCA, and USDC is the first one to be classified as being significant.”

The classification rests on MiCA Articles 43 and 56 and the quantitative indicators set out in Commission Delegated Regulation (EU) 2024/1506: customer base, value in issue, transaction scale, reserve size, and interconnectedness with the financial system. The EBA did not disclose which indicators USDC met, but one detail captures the scale: as of October 5, USDC held approximately $74.3 billion in global reserves against $74.1 billion in circulation, making it the world’s second-largest stablecoin.

Reading “significant” as regulatory endorsement is a mistake. It is a built-in trigger in MiCA: once crossed, the issuer enters a stricter prudential regime and part of its supervision changes hands. From November 12, USDC’s own funds, reserve assets, liquidity requirements, and recovery and redemption plans fall under direct EBA supervision; France’s Autorite de Controle Prudentiel et de Resolution (ACPR) retains governance, qualifying holdings, fit-and-proper assessments of managers, outsourcing, and conflicts of interest. In short: Brussels controls the money, Paris controls the people. This is the first time the dual-supervision model that MiCA Article 117 designs for significant EMTs has actually been run.

A 13-Day Reversal: Circle Is Now Subject to the Very Rule It Opposed

The most dramatic part of this classification is the timeline. MiCA requires ordinary EMT issuers to hold at least 30% of customer funds in segregated accounts at credit institutions; for significant issuers, the floor rises to 60% and the investable universe for the remainder narrows. On October 1, thirteen days before the designation, Circle submitted a formal response to the European Commission’s MiCA review calling for the abolition of the 30%/60% bank-deposit floor, proposing instead a liquidity-based test centered on whether assets can actually meet redemptions. Its argument: forcing reserves into commercial banks amplifies credit and counterparty risk rather than making stablecoins safer.

Circle’s response also asked to remove the 35% cap on exposure to a single sovereign issuer and the counterparty cap measured against 1.5% of a bank’s total assets, and to preserve its multi-issuance structure (dynamic rebalancing between the EU entity and the global entity). Thirteen days later, it became the only issuer in the entire EU constrained by the 60% deposit floor. The regulatory answer was almost immediate: if you are large enough to affect financial stability, you pay the price of being large.

One detail is easy to miss: Tether CEO Paolo Ardoino has publicly said that USDT did not seek MiCA authorization partly because of this bank-deposit requirement. Circle and Tether responded to the same rule in opposite ways: one stayed to lobby and accepted the escalation, the other chose not to enter this market. With the “significant” designation now in place, Circle’s compliance burden in the EU has grown, while USDT still has no lawful listing path in Europe. The irony is that when Circle entered Europe, its edge over Tether was precisely its earlier embrace of regulation.

Transatlantic regulatory coordination is another signal worth watching. USDC is issued by two independent entities: Circle Internet Financial Europe SAS in the EU and Circle Internet Financial LLC in the United States, with segregated reserves but fungible tokens. The EBA has signed a memorandum of understanding with the New York State Department of Financial Services (NYDFS) to share information on cross-border stablecoin activity. For supervisors, the cross-border structure raises a real question: under stress, can the EU guarantee sufficient reserves and redemption capacity within its own jurisdiction, rather than relying on a “global shared liquidity pool”? This is the first time a multi-issuer stablecoin structure has genuinely entered prudential supervisory view.

The Other Line on the Same Day: a 37-Bank Consortium Moves In to Issue Euro Stablecoins

Beyond the EBA announcement, the supply side of Europe’s stablecoin market also moved on October 14. Qivalis, an Amsterdam-based consortium of 37 European banks including BBVA, BNP Paribas, ING, and DZ Bank, announced that the Dutch central bank (DNB) had granted it an electronic money institution license, leaving only the remaining MiCA requirements such as publishing a white paper before issuing a euro-denominated e-money token (EMT). Qivalis plans to distribute the token through banks, crypto exchanges, and payment providers in the coming months rather than directly to consumers.

Since its founding in September 2025, Qivalis has grown from a handful of banks to 37 members and selected Fireblocks to provide digital asset infrastructure. Its positioning is blunt: give European banks and payment companies a regulated channel to move euros over blockchain, countering the dominance of dollar stablecoins in on-chain settlement. EMT rules mean it must satisfy MiCA’s at-par redemption at any time, no interest, and issuance by a licensed credit institution or electronic money institution. European banking is using regulatory compliance itself as a moat against American stablecoins.

Implications for Practitioners