$320 billion showdown: Tether fills audit gap, Circle faces trust crisis

By March 2026, the total market capitalization of global stablecoins officially surpassed $320 billion, with a total of 240 million holders. However, as the scale grows, the power dynamics and trust relationships within the industry are undergoing profound restructuring.

Tether’s “Milestone” Turnaround

On March 24, 2026, USDT issuer Tether announced that it had commissioned one of the Big Four accounting firms, KPMG, to conduct its first comprehensive financial audit of approximately $185 billion in reserves. At the same time, it hired PwC to improve internal systems, ending years of only releasing attestation reports. Tether described this move as “the largest initial audit in financial market history,” with USDT’s supply of about $184 billion accounting for 58% of the market share.

Tether had long been questioned over reserve transparency: in February 2021, it settled for $18.5 million with the New York Attorney General’s Office, and in October of the same year, it was accused by the CFTC of misleading investors, paying a $41 million fine. However, today, Tether not only successfully signed with the Big Four auditors but also plans to register its flagship token USDT under the GENIUS Act framework and launch a fully compliant USD-pegged token USAT to enter the US market. Its fundraising target has also been adjusted from $15-20 billion to about $5 billion.

Circle’s Compliance Fortress Crumbles

The day after the news of Tether’s signing with the Big Four, Circle’s stock price plummeted 20%.

For a long time, Circle’s core competitive advantage was “transparency and compliance,” with its USDC already audited annually by Deloitte. On April 1, 2026, Circle released its first annual financial report in cooperation with Deloitte — but Tether took the headlines a week earlier. In the eyes of stablecoin holders, the long-standing doubts about Tether’s reserves were instantly cleared; meanwhile, investors in Circle saw their once-exclusive advantage quickly “leveled.”

Deeper Crisis at Circle: Controversy Over Unfrozen Stolen USDC

On April 2, on-chain detective ZachXBT publicly accused Circle of failing to freeze hundreds of thousands of dollars of stolen USDC related to a $285 million hack on Drift Protocol, assets that were transferred using Circle’s own cross-chain transfer protocol (CCTP). This incident sparked serious questions about Circle’s policies on handling illegal funds and its responsibility as a key participant in the digital asset ecosystem. For Circle, this could impact the widespread trust in USDC—especially given Tether’s more proactive stance in freezing hacker-related funds.

Yield Ban’s Structural Impact on Centralized Stablecoins

The controversy over the yield ban in the US CLARITY Act could have a far greater impact on centralized stablecoins than on decentralized alternatives. The compromise is to prohibit passive yields but allow activity-based incentives, giving “non-freezable” decentralized stablecoins a structural advantage. For Circle, its revenue-sharing arrangement with Coinbase (about $1.35 billion in 2025) will be directly threatened.

Under regulatory pressure and competitive forces, Circle is losing its once-unassailable two major barriers: compliance advantage and passive yield moat. The market is beginning to reassess the sustainability of its business model.

Rise of Yield-Generating Stablecoins

Meanwhile, the market for yield-generating stablecoins is expanding rapidly, growing from about $11 billion to $22.7 billion, accounting for 7.4% of the total stablecoin market. The core driver of this growth is not simply high yields but “compound capital efficiency”—users can earn yields while holding these stablecoins and continue participating in staking, trading, and strategy pools. The main drivers of this trend are professional DeFi players and on-chain native institutions, not retail investors.

Traditional stablecoins (like USDT, USDC) focus on payment settlement functions, while yield-based tools are increasingly taking on asset management and wealth storage roles. The market is accelerating its layered development.

Industry Reshaping

Three main trends are unfolding simultaneously: accelerated formation of regulatory frameworks (GENIUS Act effective January 2027), intense shake-up of leading players (completion of Tether’s audit and Circle’s trust crisis), and ongoing product differentiation (payment-focused vs. yield-focused stablecoins). Regardless of the outcome, the $320 billion stablecoin market will undergo a profound “reshuffle” in 2026.