Tether Engages Big Four Firm for First Full Audit of USDT Reserves

Tether has engaged a Big Four accounting firm to conduct its first full financial statement audit, marking a significant step toward deeper transparency for the $184 billion stablecoin issuer, which has long been criticized for its lack thereof.

The audit, described by the company as its “first full independent financial statement audit,” will review Tether’s assets, liabilities, and reserves. It is expected to go beyond the attestation reports that have historically been standard across the stablecoin sector.

Tether did not disclose which firm (Deloitte, EY, KPMG, or PwC) will conduct the audit.

A Long-Awaited Step Toward Transparency

In 2021, Tether reached a settlement with the New York Attorney General’s office and paid a $41 million fine over allegations it misrepresented the backing of its stablecoin. The company has also faced broader criticism from regulators and market participants over transparency, particularly as its role in global crypto markets has grown.

Stablecoin issuers have typically relied on periodic attestations to verify reserves. These reports confirm management’s claims at a specific point in time but do not evaluate broader internal controls or ongoing liquidity management practices.

A full audit, by contrast, is widely considered the highest standard of financial verification, involving a comprehensive review of financial statements, internal controls, and risk management systems.

Chief Executive Paolo Ardoino described the audit as the result of years of preparation:

“For the hundreds of millions of people and businesses who rely on USDT every day, this audit is not just a compliance exercise; it is about accountability, resilience, and confidence in the infrastructure they depend on.”

Positioning for a Compliance-Heavy Future

The move also comes as stablecoins increasingly intersect with traditional finance and regulatory frameworks.

Tether recently expanded its U.S.-focused efforts with the launch of a new compliant stablecoin product, signaling a broader push to operate within evolving regulatory expectations. At the same time, institutional demand for transparency is rising, particularly as stablecoins become more integrated into payment systems and financial infrastructure.

With USDT representing the largest stablecoin by market capitalization and a central source of liquidity across crypto markets, the outcome of this audit could have broader implications and establish a new benchmark for transparency and reporting in the stablecoin sector.