Tether has obtained a reserve report from a Big Four accounting firm for the first time, but the asset under review is not the stablecoin the market cares about most. On March 2, 2026, Deloitte signed the first proof-of-reserves report for USAT, confirming that $17.6 million in reserve assets backed 17.5 million USAT tokens in circulation, for a reserve ratio of 100.57%.
The report matters, yet its scope is narrow. Deloitte did not examine USDT, Tether’s flagship stablecoin with circulation of about $183.6 billion. It covered a newly launched product that went live on January 27, 2026. That gives Tether a long-sought Big Four endorsement, while leaving the larger transparency debate around USDT untouched.
A Big Four report arrives after years of scrutiny
Tether’s reserve practices have faced criticism for years. The source material says that in 2017, Tether announced it had hired Friedman LLP for an audit, but the relationship ended months later. Tether said the audit procedures were “too detailed.” In 2019, the New York Attorney General sued Tether and affiliated exchange Bitfinex, alleging that Bitfinex used Tether reserves to cover an $850 million shortfall. The case ended in a 2021 settlement in which Tether paid $18.5 million without admitting wrongdoing.
That same year, the U.S. Commodity Futures Trading Commission published figures showing that from June 2016 to February 2019, while Tether said every USDT was backed by equivalent U.S. dollar reserves, it was fully reserved on only 27.6% of days sampled across a 26-month period. The CFTC fined Tether $41 million. Against that background, Deloitte’s reserve report for USAT stands out as a notable compliance milestone, even if it does not resolve the older questions.
USDT and USAT follow different structures
The two stablecoins operate under very different setups. USDT, launched in 2014, is Tether’s main product and has long been run through offshore entities. According to the source, its reserves include not only dollars and U.S. Treasuries but also Bitcoin and gold. USAT is built for the U.S. market instead. It is issued by federally regulated Anchorage Digital Bank, its reserves are limited to U.S. dollar cash and U.S. Treasuries, and it falls under the oversight of the Office of the Comptroller of the Currency. The source also says it complies with the GENIUS Act stablecoin law passed in July 2025.
That distinction is central. Deloitte validated a simpler and more tightly defined reserve pool, not the broader balance sheet issues tied to USDT. The source draws a clear line between an attestation and an audit: one is a snapshot at a given moment, while the other examines transactions, controls, risk management, and related-party dealings over a period of time.
Former White House official now leads Tether USA
The management structure around USAT has also drawn attention. The source identifies Bo Hines as CEO of Tether USA. He previously served as executive director of the White House Digital Asset Advisory Council. From January to August 2025, he worked in the Trump administration as a liaison between the crypto industry, regulators, and lawmakers, and helped advance the GENIUS Act. Three weeks after leaving the White House, he became CEO of Tether USA.
That shift gives Tether’s U.S. strategy a different profile. A company whose offshore stablecoin operations were fined by two U.S. regulators is now trying to build a domestic route through USAT, OCC oversight, Anchorage Digital Bank, and a Deloitte-signed reserve report.
The main question is still the scale of USDT
USAT may be cleaner from a regulatory standpoint, but its scale is tiny next to USDT. As of March 2026, USDT circulation stood at about $183.6 billion, while USAT was at $17.6 million. The source says Tether’s quarterly attestations for USDT are issued by Italy’s BDO, and the reserves include U.S. Treasuries, reverse repurchase agreements, Bitcoin, gold, secured loans, and “other investments.”
Tether also reported net profit of more than $10 billion for full-year 2025. Even so, strong earnings have not settled concerns about USDT’s reserve composition and disclosure standards. The Deloitte report gives Tether a stronger compliance narrative in the United States, but it does not function as a full answer to the history and structure of USDT.
Stablecoin competition is shifting toward regulation
The source notes that in 2025, Circle’s USDC market capitalization grew 72% to $75.1 billion, while USDT’s growth slowed to 36%. In January and February 2026, Tether burned a combined 6.5 billion USDT, reducing market capitalization from $186.8 billion to $183.6 billion. Over the same period, the USDC-to-USDT market cap ratio rose to 41%.
Those numbers suggest that stablecoin competition is no longer shaped by liquidity and distribution alone. Regulatory fit is becoming a larger factor in market share. USDT built its position on deep trading use and network effects across the crypto market. USAT is Tether’s attempt to establish a version that can operate inside a U.S. regulatory framework. For now, the Deloitte name is attached to a product that is only five weeks old and very small, not to the stablecoin that remains at the center of Tether’s business.