The Q2 2025 reserves attestation shows a 50% reduction in the excess buffer. Supply increased. The ledger doesn't lie.
Tether, the issuer of the world's largest stablecoin by market capitalization, announced on August 2026 that KPMG had issued an unqualified opinion on its 2025 financial statements. This marks the first time a Big Four auditor has signed off on Tether's books, replacing the quarterly attestations from BDO Italia. The audit covered the fiscal year ending December 31, 2025, and was conducted under AICPA standards and US GAAP. The headline: reserves exceeded liabilities by $6.814 billion. The industry celebrated a transparency milestone. But the data tells a different story.
Let me anchor this in my own audit experience. In 2021, I spent 400 hours verifying cross-chain bridge liquidity using Etherscan API scripts. I learned that a clean audit opinion is a snapshot, not a guarantee. The KPMG report is a backward-looking check on past transactions. It does not certify the ongoing health of the reserve composition or the buffer's trajectory. The Q2 2025 numbers, which were released alongside the audit announcement, reveal a critical divergence.
Core: The Reserve Buffer Halved
At year-end 2025, Tether reported an excess reserve buffer of $8.23 billion. By Q2 2026, that buffer had dropped to $4.11 billion—a decline of exactly 50%. During the same period, USDT supply increased by approximately $4.46 billion, reaching roughly $180 billion. This means the excess per USDT in circulation fell from about $0.0457 to $0.0228. The cushion thinned by half while the ecosystem grew. The ledger doesn't lie.
Tether attributed the drop to changes in asset valuations and operational adjustments. But without a public breakdown of the income statement or balance sheet, external verification is impossible. The KPMG opinion itself is not publicly available. CoinDesk and Reuters reported the news, and a KPMG spokesperson confirmed the engagement, but the actual report—including line items, transaction testing details, and counterparty exposure—remains sealed. The market is left to trust Tether's summary of the audit.
Furthermore, the Q2 2026 attestation removed the dollar-denominated valuation of gold and eliminated the bitcoin valuation entirely. This is a significant disclosure regression. Under the GENIUS Act, both gold and bitcoin are not considered qualified reserves for stablecoin issuers. The shift suggests Tether is aligning its reporting to match the regulatory framework, but it also obscures the true risk profile of the reserve portfolio. Tracing the source of the buffer decline, we see a structural change in disclosure rather than a purely financial one.
Contrarian: Audit Opinion ≠ Solvency Under Stress
The market appears to be pricing the KPMG audit as a positive signal. Institutional sentiment may improve. But the correlation between a clean audit opinion and the stablecoin's ability to withstand a run is weak. The 2022 Terra collapse taught me that a stablecoin's solvency is determined by the liquidity and quality of its reserves, not by an auditor's stamp. KPMG's unqualified opinion does not address the fact that 68% of the excess buffer evaporated in six months. It does not certify that the remaining $4.11 billion is sufficient to cover a sudden redemption wave of 5% or 10% of USDT supply.
More importantly, the audit was conducted on Tether International, S.A. de C.V., a company registered in El Salvador. It may not cover the entire Tether group or the newly launched USAT, which is being offered through Anchorage Digital. The legal entity scope is a potential blind spot. If a future crisis involves a different subsidiary, the KPMG opinion becomes irrelevant.
Another counter-intuitive angle: the audit may accelerate the bifurcation of Tether's stablecoin strategy. USAT, designed for the US market, is being built with KPMG and PwC involvement. USDT, the global product, remains non-compliant with the GENIUS Act. The audit could be a stepping stone to winding down USDT exposure in the US and shifting focus to USAT. This would create a two-tier stablecoin ecosystem: USDT for unregulated markets, USAT for regulated ones. The audit opinion is a tool for regulatory navigation, not a signal of enhanced safety for USDT holders.
Takeaway: The Next Signal
The KPMG audit is a historical fact. It does not change the present trajectory. The next signal to watch is the Q3 2026 reserve report. If the excess buffer continues to decline, or if the disclosure of gold and bitcoin valuations is permanently removed, the risk profile shifts. Follow the outflows. The data will tell us whether the audit was a foundation or a facade.
Audit complete? The numbers are still moving.