KPMG delivered an unqualified opinion—the cleanest possible audit result, meaning the firm had no reservations about the financials—on Tether's full-year 2025 financial statements. Tether announced the result Thursday, describing it as the "largest inaugural financial audit in history." The scope covered assets, liabilities, income, cash flows, internal controls, counterparty relationships and supporting documentation.
The audit went beyond standard document review. KPMG physically counted and inspected every individual gold bar in Tether's reserves rather than accepting custodian reports at face value. That level of verification distinguishes a full financial-statement audit from the quarterly attestations Tether had previously relied on—attestations being a lighter-touch review that confirms a point-in-time snapshot of assets against liabilities but does not examine transactions, counterparties or the underlying evidence trail.
The distinction matters because Tether's history gave critics legitimate grounds for suspicion. In 2021, Tether paid an $18.5 million settlement to the New York Attorney General's office over misrepresentation of its reserves. That same year, the CFTC fined Tether $41 million for claiming USDT was fully backed by dollars when, in fact, it was not at all times. The company spent the following years publishing those quarterly attestations—a format critics specifically called insufficient—while promising a full audit that never came, until now.
CEO Paolo Ardoino framed the result as vindication. "Several years of detractors' false claims, competitors' lies, political attacks and misinformed coverage" were his words for what the audit refutes. Ardoino's framing is predictably self-serving, but the underlying fact stands: no Big Four firm issues an unqualified opinion on financials it finds materially flawed.
The clean opinion arrives as Tether pushes into the U.S. market with a domestic stablecoin product and positions itself under the GENIUS Act framework—the federal law signed in 2025 that sets reserve and audit standards for payment stablecoin issuers. A full audit from a Big Four firm is precisely the credential the GENIUS Act framework rewards, and Tether now holds it.
The competitive pressure on Circle is direct. Circle built its market positioning around being the transparent, regulated alternative to Tether—that contrast was the commercial thesis behind USDC. Tether has now satisfied the same audit standard that Circle long used as a differentiator. Tether reported $1.5 billion in profit for the second quarter and holds more U.S. Treasuries than most sovereign nations. USDT remains the dominant stablecoin by market share, and the company can now pair that scale with audited financials.
One significant caveat: Tether has not released the full audit report publicly. The company confirmed KPMG's unqualified opinion but kept the underlying document private. That decision does not invalidate the result—KPMG's opinion is what it is—but it limits independent verification of the methodology and scope details beyond what Tether itself has disclosed. Critics who demanded transparency will note that the company is still controlling what the public actually sees.
The structural question the audit raises is whether quarterly attestations were ever an adequate standard for an entity of Tether's size. USDT is the settlement layer for a substantial portion of global crypto trading volume. The company's Treasury holdings alone place it in a tier that most regulated financial institutions occupy. Operating on attestations at that scale was an anomaly that regulators and institutional counterparties increasingly could not accept, and the GENIUS Act framework codified that expectation into law.
For the stablecoin market broadly, the audit resets the competitive baseline. The argument that Tether's opacity justified a regulatory or institutional preference for USDC no longer holds in its prior form. Circle will need to compete on product, distribution and yield rather than on governance contrast alone. Tether, for its part, has delivered the credential it owed the market for years—delivered late, but delivered.
