For years, Tether’s critics had one reliable complaint: the company behind the world’s dominant stablecoin had never submitted to a full, independent financial audit. On August 13, 2026, that complaint expired.
Tether announced the completion of its first comprehensive financial statement audit, conducted by KPMG U.S., covering the company’s full 2025 financial year. KPMG issued an unqualified opinion, the highest level of assurance an auditor can give, meaning the firm found no material misstatements and concluded the financials present a true and fair view of the company’s position.
The company is calling it the largest inaugural financial audit in the history of digital assets, a claim that is difficult to dispute given the scale of what KPMG was working with.
The numbers behind the headline
To understand why this audit matters, consider the size of what is now being formally verified. Tether’s USDT stablecoin carried a market cap exceeding $184 billion at the time KPMG’s engagement was announced in March 2026, making it larger than the GDP of many mid-sized economies.
The company’s reserves include approximately $141 billion in U.S. Treasuries, positioning Tether as one of the largest holders of American government debt on the planet, sitting alongside sovereign wealth funds and major central banks.
Tether also reported Q1 2026 profits of roughly $1 billion, a figure that underscores the business model: issue tokens, back them with yield-bearing assets, keep the yield. With over 550 million users estimated at the time of KPMG’s engagement, the operational and financial scope of what the auditors reviewed is genuinely without precedent in this industry.
KPMG was brought on through a competitive selection process in March 2026, replacing BDO Italia, which had been providing the quarterly attestation reports Tether used to publish. Attestations and audits are not the same thing. An attestation checks whether reserves match liabilities at a single point in time, like a snapshot. A full audit examines internal controls, accounting policies, and financial statements across an entire year, with the auditor taking legal and professional responsibility for their conclusions.
Why the old approach drew criticism
Tether’s reliance on quarterly attestations was a persistent source of skepticism from regulators, institutional investors, and crypto market watchers alike. The format, while better than nothing, offered limited visibility into how reserves were managed, what counted as a qualifying asset, and whether the company’s internal accounting practices were sound.
The appointment of Simon McWilliams as Tether’s CFO in early 2025 signaled that leadership was aware of the governance gap. McWilliams brought traditional finance credibility to the role, and the move toward a Big Four audit followed within months.
CEO Paolo Ardoino and CFO McWilliams have both framed the audit as central to Tether’s claims of 100% backing for all issued USDT tokens. An unqualified opinion from KPMG gives those claims a level of third-party verification they have never had before.
What this means for the broader market
Tether has been vocal about exploring deeper engagement with the U.S. market, and the regulatory landscape for stablecoins has been shifting. Legislative efforts to establish a formal federal framework for dollar-pegged tokens have picked up momentum, and a credible audit history is likely to be a baseline requirement for any company seeking to operate under such a framework.
Circle, the issuer of USDC, has maintained more traditional audit practices for longer, but USDC’s market footprint is significantly smaller.
With approximately $141 billion in U.S. Treasuries, Tether is a major participant in the short-duration U.S. government debt market. An audited confirmation that those reserves are real, properly custodied, and correctly accounted for is relevant not just to crypto traders but to anyone who cares about the plumbing of dollar liquidity markets.