Tether said it completed its first audit by a Big Four accounting firm, with KPMG issuing an unqualified opinion on the reserves backing the $186.54 billion USDT stablecoin. The announcement marks the resolution of a commitment Tether made years earlier to subject its finances to top-tier external scrutiny.
KPMG's unqualified opinion means the auditor found no material exceptions to Tether's reserve representations across the scope of the engagement. The firm did not disclose which Big Four auditor it had retained until the work was complete, a departure from Tether's prior practice of naming engagement partners publicly at announcement.
Tether has faced sustained pressure from regulators, legislators and competitors over the opacity of USDT's backing. The stablecoin, which trades across crypto exchanges and is held by institutions and retail users globally, grew to become the largest dollar-pegged token by market value. Regulators in multiple jurisdictions have demanded clarity on reserve composition and custody arrangements as stablecoins scaled into systemic roles in crypto trading and settlement.
Attestations by smaller audit firms had become a flashpoint for critics who argued that quarterly limited reviews fell short of the standard applied to traditional financial intermediaries. Tether previously engaged Katten Muchin Rosenman for reserve certifications, a law and advisory firm rather than a traditional auditor. The shift to KPMG, which audits some of the world's largest financial institutions, represents a material upgrade in the credibility framework Tether has built around USDT.
The timing arrives as regulators worldwide have begun drafting stablecoin-specific rules. The European Union's Markets in Crypto Regulation took effect this month, requiring issuers of significant stablecoins to undergo external audit and maintain minimum capital reserves. Similar proposals are under review in the United States, where the SEC and the Federal Reserve have outlined expectations for coin issuers seeking regulatory clarity.
Tether said the Big Four engagement was the first full audit it had completed, distinguishing it from prior attestations. The company did not disclose the scope of KPMG's testing, the period covered, or whether the auditor examined custody relationships, settlement flows, or collateral composition in detail.
KPMG's unqualified opinion on a $186.54 billion reserve base represents the largest stablecoin audit opinion issued to date by a Big Four firm. If KPMG's work becomes a model for USDT's annual cycle, the audit burden and associated costs could shift the economics of stablecoin issuance in a way that favors larger, better-capitalized competitors. The document Tether will need to release is a full copy of KPMG's audit report, including the scope statement, management assertions and any audit adjustments or qualifications, to allow market participants and regulators to assess the depth and rigor of the engagement.
