Revolut spent August 2026 doing two things at once: rolling out its own euro stablecoin, EURR, to customers in Denmark, Poland and Portugal, and stripping Tether's USDT from the same customers' wallets. The two moves are the same story. Under the EU's Markets in Crypto-Assets Regulation (MiCA), a platform operating in the European Economic Area can no longer simply list whichever stablecoin has the deepest liquidity — it can only list tokens whose issuer has cleared a specific, expensive regulatory bar. Revolut cleared that bar for its own token. Tether didn't try to clear it for USDT. The result is a live case study in how MiCA is reshaping market structure, not just disclosure.
What actually changed
EURR is not issued by Revolut itself. It's issued by Bridge Building S.A., a Luxembourg entity that is a subsidiary of Bridge, the stablecoin infrastructure firm Stripe acquired for $1.1 billion in a deal that closed in February 2026. Bridge Building holds both a Crypto-Asset Service Provider (CASP) authorisation and an Electronic Money Institution licence from Luxembourg's financial regulator, the CSSF, secured on 2 July 2026, and it formally joined the EU's MiCA register as an authorised e-money token (EMT) issuer on 7 August 2026 — the 42nd such issuer in the bloc, per reporting on the register update. Revolut's own role is distribution, through a separately MiCA-licensed subsidiary regulated out of Cyprus. At launch on 20 August, Bridge's public reserve dashboard showed just 374 EURR tokens in circulation, backed one-for-one by €374 held as cash deposits at credit institutions — a deliberately tiny, auditable start for a token meant to eventually serve Revolut's EEA customer base (Finance Magnates).
At the same time, Revolut wound down USDT support for EEA and Swiss customers, halting purchases in early July and completing the delisting by 31 August 2026, with unconverted balances auto-swapped into customers' base currency (Blockhead). Tether never applied for MiCA authorisation. Tether CEO Paolo Ardoino has argued publicly that MiCA's reserve rules — which require e-money token issuers to hold a large share of backing assets as deposits at EU credit institutions — concentrate counterparty risk in a handful of banks rather than reducing it. That argument deserves to be taken seriously, not dismissed as regulatory foot-dragging: MiCA's Article 36 reserve regime does force issuers to bank with a small set of EU institutions, and a wave of stablecoin issuers all parking reserves at the same few banks is a real, if manageable, concentration exposure.
The mechanism, not just the headline
The MiCA transition period that made all this binding ended on 1 July 2026. After that date, the CSSF states plainly, virtual asset service providers "are no longer permitted to offer their services without authorisation as crypto-asset service providers," and unauthorised firms must wind down in an orderly fashion rather than continue trading (CSSF). For stablecoins specifically, MiCA (Regulation (EU) 2023/1114) requires e-money and asset-referenced token issuers to hold a reserve of assets matching the liabilities their tokens represent, custodied with EU-authorised credit institutions or investment firms, and to maintain own funds proportionate to that reserve — a regime spelled out in Articles 35 and 36 of the regulation text itself (EUR-Lex). That is not a labelling requirement. It is a capital and custody regime that only well-resourced institutions — banks, licensed EMIs, or firms like Bridge with a payments balance sheet behind them — can realistically satisfy at EU scale.
Who this actually serves
The steelman case for MiCA's stablecoin regime is straightforward: euro-area consumers holding "stable" tokens that turn out to be under-collateralised or opaque about reserve composition is a genuine systemic and consumer-protection risk, and the 2022 Terra/UST collapse showed what happens when a token marketed as stable isn't backed the way users assume. Requiring audited, EU-custodied reserves and real capital buffers is a defensible response to that risk, and it gives users of EURR something USDT never offered European holders: a named regulator, a public reserve dashboard, and a Luxembourg entity they can in principle sue.
But the honest cost side of that ledger is consolidation. MiCA doesn't just filter out undercapitalised or opaque issuers — it filters out issuers who could meet a lighter-touch reserve and disclosure standard but not the specific EU-bank-deposit structure MiCA mandates. USDT remains the largest stablecoin globally by market capitalisation and has not been found deficient in reserves; it has been excluded from the EU on a design choice about where capital sits, not a finding of fraud or shortfall. The practical effect, replicated across Coinbase, Kraken, Crypto.com and now Revolut, is that EU consumers lose access to the most liquid dollar-denominated stablecoin on earth and are steered toward a narrower field of EU-domiciled alternatives — Circle's USDC and EURC, and now bank-and-payments-backed entrants like EURR. Proportionate regulation should target risk, not just non-EU domicile; a licensing bar that only Stripe-scale infrastructure firms can clear is a market-structure outcome dressed as a consumer-protection one, and regulators should watch whether the resulting concentration in a handful of EU-approved issuers becomes the next fragility this regime was meant to prevent.