Circle's regulatory edge widens gap with Tether in stablecoin market
New US and European regulations have effectively split the stablecoin market, rewarding Circle's USDC with institutional access while pushing Tether's USDT into regulatory exile despite its dominant market share.
The global stablecoin market has fractured into a two-tier system. US and European regulatory frameworks have granted Circle’s USDC full compliance, while Tether’s USDT is barred from both jurisdictions, forcing a structural divergence between the two largest dollar-pegged tokens.
Despite the regulatory setback, USDT remains the dominant stablecoin by volume. As of July 2026, USDT holds roughly $184 billion in circulation, capturing nearly 60% of the market. USDC trails at about $73 billion, or a quarter of the total. For trading desks, the tokens remain largely interchangeable, routinely swapped at negligible cost depending on the transaction corridor.
The divergence stems from where the issuers are domiciled. The GENIUS Act restricted US payment stablecoins to domestic issuers, locking out Tether after it moved its main operating entity to El Salvador in January 2025. Europe’s MiCA framework delivered a similar blow in 2024, prompting major exchanges including Binance, Kraken, and Coinbase to restrict USDT for European users. Circle, meanwhile, secured EU compliance in 2024 and won approval in July 2026 to operate a US national trust bank under federal supervision.
Corporate structure further separates the two assets. Circle became a publicly traded company in June 2025, offering investors direct exposure through its NYSE-listed stock and subjecting its reserves to monthly Deloitte reviews. Tether remains privately held and has historically relied on quarterly attestations rather than full audits. Tether engaged KPMG for its first independent audit in early 2026, though completion remains unclear. The company’s transparency has been questioned before, resulting in $59.5 million in combined fines from the CFTC and New York Attorney General in 2021 over past reserve claims.
Both issuers generate revenue almost entirely from interest on their reserve assets, primarily short-term US Treasuries. Tether reported $1 billion in net income for the first quarter of 2026. Circle earns similar yields but hands nearly 60% of its revenue to distribution partners like Coinbase. While neither token has permanently broken its peg, both carry historical risks. USDC dropped to 87 cents in March 2023 when Silicon Valley Bank held $3.3 billion of its reserves, while USDT briefly fell to 95 cents during the 2022 TerraUSD collapse.
For institutional treasury management and regulated finance, USDC is now the default option. USDT continues to serve the broader crypto trading ecosystem, but its lack of regulatory standing effectively walls it off from traditional capital markets.
