The world's largest stablecoin issuer has hired Big Four firm KPMG to conduct a comprehensive audit of USDT's reserve backing, moving beyond the periodic attestations that have drawn years of criticism from regulators and market participants.
Tether, the issuer of the $185 billion USDT stablecoin, has engaged KPMG to perform its first comprehensive financial statement audit, marking a significant departure from the periodic attestation reports that have served as the company's primary transparency mechanism since its founding. The announcement, made on March 24, 2026, follows years of sustained criticism from regulators, academic researchers, and competing stablecoin issuers who have questioned whether USDT maintains sufficient liquid reserves to honour its one-to-one dollar peg at all times.
Tether said KPMG was selected through a competitive process involving multiple Big Four and major mid-tier accounting firms. The scope of the engagement extends well beyond the quarterly attestation reports previously published by BDO Advisory Services, encompassing a detailed review of assets, liabilities, internal controls, and financial reporting systems across all of Tether's operational entities.
Why an Audit Differs From an Attestation
The distinction between an attestation and a full audit is material. Attestations, which Tether has published since 2021 through BDO, verify specific assertions at a single point in time — typically that reserve assets exceed outstanding USDT liabilities on a given date. A full audit, by contrast, involves continuous examination of financial records, stress-testing of internal controls, verification of asset ownership chains, and an assessment of whether financial statements present a fair and accurate picture of the company's position.
Howard Lutnick, the former Cantor Fitzgerald chief executive who managed a portion of Tether's Treasury holdings before joining the Trump administration as Commerce Secretary, had previously vouched for Tether's reserves. However, industry observers noted that third-party assurances from business partners carry less weight than an independent audit opinion from a globally recognised accounting firm.
Regulatory Pressure and the GENIUS Act
The audit engagement arrives against the backdrop of the GENIUS Act, enacted in July 2025, which established a federal licensing framework for stablecoin issuers operating in the United States. The legislation requires payment stablecoin issuers to maintain one-to-one reserve backing using safe assets such as US Treasury securities and bank deposits, with monthly reserve disclosures and independent audits featuring explicit CEO and CFO attestation of compliance.
While Tether is domiciled in the British Virgin Islands and has historically operated outside direct US regulatory jurisdiction, the GENIUS Act's extraterritorial provisions apply to any stablecoin widely used within the United States. With USDT accounting for approximately 62 percent of the global stablecoin market, the practical necessity of compliance is clear. Circle, Tether's primary rival and issuer of the $52 billion USDC, has published full audit reports since 2023 and has used this transparency advantage as a competitive differentiator with institutional clients.
Reserve Composition Under Scrutiny
Tether's most recent attestation, covering Q4 2025, indicated that the company held $113 billion in US Treasury bills, $18 billion in reverse repurchase agreements, $12 billion in money market funds, and smaller allocations to gold, bitcoin, corporate bonds, and secured loans. Critics have focused on the non-Treasury components, arguing that assets such as secured loans and corporate paper carry credit and liquidity risk that could impair Tether's ability to process large-scale redemptions during periods of market stress.
A KPMG audit would be expected to verify not just the existence of these assets but also their liquidity profiles, counterparty exposures, and the operational capacity of Tether's systems to process redemptions. Analysts at JPMorgan noted in a March research note that a clean audit opinion from a Big Four firm would 'materially reduce the tail risk discount currently embedded in Tether-adjacent trading pairs.'
Timeline and Market Implications
Tether has not disclosed a specific timeline for the audit's completion, though industry sources suggest the process could take six to nine months given the complexity of the company's multi-jurisdictional operations and diverse asset portfolio. The Q1 2026 attestation from BDO is expected in late April, providing a near-term data point on reserve adequacy while the fuller KPMG engagement proceeds.
For the broader stablecoin market, the engagement signals that the era of self-reported transparency is drawing to a close. With seven major economies now mandating full reserve backing and licensed issuance for stablecoins, Tether's move towards Big Four accountability may prove to be less a voluntary gesture of openness and more a commercial necessity for maintaining the trust infrastructure that underpins the world's most widely used digital dollar.
