Circle wins the regulatory race against Tether

MiCA forces a stablecoin split in Europe

The July 1, 2026, MiCA deadline forced a sharp divide between stablecoin issuers in the European Union. Circle secured e-money token authorization for USDC and EURC, but Tether did not apply for the required license. This decision forces exchanges like Binance, Kraken, Coinbase EU, and Crypto.com to delist USDT spot pairs for users in the European Economic Area. Circle’s EURC grew to a market capitalization between 400 and 460 million dollars through the first half of 2026. The regulatory framework also limits non-euro stablecoin usage for payments to protect euro stability. Circle is the clear winner in Europe. The MiCA framework distinguishes between Electronic Money Tokens and Asset-Referenced Tokens, both of which require EU-incorporated issuers. The 2025 GENIUS Act in the United States also creates a strict environment by requiring 1:1 reserve backing and oversight from the Office of the Comptroller of the Currency. Circle remains compliant with these US standards and is pursuing an OCC national trust charter. BNY Mellon made USDC the first stablecoin on its Digital Asset Custody platform to support institutional users. The UK is also implementing FCA authorization requirements that mandate full reserve backing in liquid assets. This regulation aims to bring digital settlement assets into the financial mainstream.

Transparency gap between BlackRock and BDO Italia

Circle manages USDC reserves through the BlackRock-managed Circle Reserve Fund, which holds 80 percent in short-duration US Treasuries and 20 percent in cash. This fund invests at least 99.5 percent of its total assets in cash, US Treasury bills, and other obligations. BNY Mellon holds these assets in custody. You must recognize the difference between Circle’s monthly attestations from Deloitte and the quarterly point-in-time snapshots provided by BDO Italia for Tether. Tether’s Q2 2026 report shows $187.75 billion in total assets against $183.64 billion in liabilities, which leaves $4.11 billion in net equity. While Tether remains the dominant offshore rail with $189.5 billion in circulation, the lack of a Big Four audit creates a transparency gap that Circle closed through its public listing on the New York Stock Exchange in June 2025.

In the first quarter of 2026, Circle reported $694 million in total revenue, including $653 million from reserve income. This revenue comes from interest on the Treasury holdings.

Tether dominance and the regulatory ceiling

Tether maintains its market lead with $189.5 billion in circulation and a market share over 60 percent. The company reported $1.50 billion in net operating profit for Q2 2026, led by its US Treasury and repo performance. Tether also added 14 tons of physical gold to its reserves and reduced its secured lending exposure by $2.38 billion. However, the company faces a regulatory ceiling in the United States. The 2025 GENIUS Act requires 1:1 reserve backing and monthly attestations for all payment stablecoins. Tether has not signaled any intent to register as a US payment stablecoin issuer, even after facing a $41 million CFTC fine in 2021 and a $18.5 million New York Attorney General settlement. Tether holds 4 to 6 percent of its reserves in secured loans and 4 to 5 percent in Bitcoin. Tether’s USDT supply reached $184.6 billion at the end of Q2 2026, which was $446 million higher than at the end of Q1. During the May 2022 market volatility, USDT briefly traded as low as $0.95 before recovering. This volatility illustrates the risks of relying on a single issuer’s reserves. Regulatory scrutiny remains high for all major issuers. Will Tether eventually abandon its offshore strategy to chase US institutional liquidity?