TLDR
- Tether has hired a Big Four accounting firm for its first full financial audit of USDT reserves
- The audit covers assets, liabilities, controls, and reporting systems — going beyond previous attestations
- USDT is the world’s largest stablecoin, with a market value above $184 billion and over 550 million users
- Tether did not name the firm, but the Big Four includes Deloitte, EY, KPMG, and PwC
- The move comes after years of scrutiny over whether USDT is fully backed by liquid assets
Tether, the company behind the USDT stablecoin, said Tuesday it has hired a Big Four accounting firm to carry out its first full financial statement audit.
BREAKING: TETHER ENLISTS DELOITTE FOR FIRST $USAT STABLECOIN AUDIT
Big Four accounting firm @Deloitte completes inaugural attestation report for Tether's U.S.-regulated stablecoin USAT, marking major compliance milestone for the stablecoin issuer's American operations. pic.twitter.com/DhsFwKjqkM
— BSCN (@BSCNews) March 2, 2026
The announcement marks a step up from the periodic attestations Tether has released in the past. A full audit involves a deeper review of assets, liabilities, internal controls, and reporting systems.
“The Big Four Firm was selected through a competitive process because the organisation is already operating at Big Four audit standard,” said Simon McWilliams, Tether’s Chief Financial Officer. “The audit will be delivered.”
Tether did not name the specific firm. The Big Four refers to the four largest global accounting firms: Deloitte, EY, KPMG, and PwC.
USDT is the largest stablecoin in the world by market value. It currently has a market cap above $184 billion and is used by more than 550 million people worldwide.
Stablecoins like USDT are designed to hold a steady value, typically pegged one-to-one to the US dollar. To do that, the issuer is expected to hold equivalent assets in reserve.
Tether says its reserves are made up mostly of US Treasury bills. It also holds smaller amounts of gold, bitcoin, and loans.
Long-Standing Questions Over Reserves
Critics have questioned the makeup of those holdings for years. Some have raised concerns about the liquidity and risk of certain assets, especially during periods of market stress.
Previous attestations, while providing a snapshot of reserves, were not considered full audits. They did not include the same level of scrutiny into internal controls and financial systems that a proper audit requires.
This new engagement is meant to fill that gap. The audit will include a full review of the assets backing USDT, how they are managed, and the financial reporting behind them.
What a Full Audit Means for USDT
The audit process will cover issued tokens alongside traditional and crypto assets. Tether says the results will give investors and regulators clearer proof that USDT is properly backed and that the assets are accessible.
Tether CEO Paolo Ardoino has previously defended the company’s reserve practices. The company has said it operates at a standard consistent with major financial institutions.
No timeline for completing the audit has been announced.
USDT remains the dominant stablecoin in the crypto market, with its $184 billion market cap placing it well ahead of competitors.
The move comes as US lawmakers continue to debate stablecoin legislation, with reserve transparency being a key point of discussion.
Tether’s CFO confirmed the audit firm was chosen through a competitive process and did not provide further details on timing or scope beyond what was announced Tuesday.
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