Tether Audit: The Dress Rehearsal for the 2028 Exam

KPMG US signed an unqualified opinion (an auditor's clean report: the statements fairly reflect the financial position) on the 2025 accounts of Tether International, S.A. de C.V.: reserves exceeding liabilities by $6.814 billion as of December 31, including physical inspection of every gold bar. This is the first full audit in the twelve-year history of USD₮, announced on August 13, 2026, nine years after the company first promised it. This analysis measures that approval against the only deadline on the calendar: the GENIUS Act, in operational effect since January 18, 2027, will require authorized issuers with more than 50 billion in circulation to provide annual financial statements audited in accordance with US GAAP (Generally Accepted Accounting Principles), published on their website and accompanied by reserve reports certified by their top management. The file Tether began building on August 13 already checks several of those boxes; others remain blank, and the most striking is that the document intended to prove all of the above cannot be read: neither the audited statements nor the KPMG report are public.

What exactly did KPMG sign in Tether's first full audit?

The official note from August 13, 2026, specifies the scope: KPMG US audited the financial statements of Tether International, S.A. de C.V. —the Salvadoran entity that issues USD₮ since the 2025 headquarters relocation— for the fiscal year ended December 31, 2025, and issued an unqualified opinion under US GAAP. According to the note itself, those statements show reserves exceeding liabilities by $6.814 billion as of that date. Paolo Ardoino, CEO, sets the standards of the engagement in his literal quote: "KPMG did not simply review headline figures. KPMG conducted a full and exhaustive audit in accordance with AICPA standards," the American Institute of Certified Public Accountants, whose auditing standards are known as GAAS. This technical detail, which the note dismisses in a single sentence, is what determines half the scorecard of the GENIUS file.

The fieldwork included a gesture unusual even in banking audits: according to the note, KPMG physically counted and inspected every gold bar held by Tether, verifying the existence and identification of each rather than relying solely on custodian reports. To put this in perspective: Tether's vault held 146.2 tonnes as of June 30, 2026, according to BDO's attestation (limited review, not an audit) from that date. The rest of the described scope covers assets, liabilities, income, cash flows, internal systems, counterparties, and supporting documentation.

The timeline of the engagement fits into four dates. Tether first promised a full audit in 2017, as recalled by The Block. On March 24, 2026, it confirmed hiring a Big Four firm, without naming it, with PwC preparing internal systems as reported by CoinDesk at the time. The second-quarter statement on July 31 mentioned it in a single sentence without a signature or date. And on August 13, the announcement arrived with the KPMG name and the result. Ardoino celebrated it in two tones: "For years, some detractors said a Tether audit could not be completed [...] we have proven them wrong once again," and "people may describe it as the end of a long journey, but we see it as the beginning of the next."

The scale justifies the superlative Tether chose for its headline —"the largest inaugural audit in history"—: the audited entity reported $192.878 billion in assets at the closing date and $186.451 billion in issued tokens, with 530 million declared users worldwide at the end of 2025.

What does the GENIUS Act require of an issuer of Tether's size and since when?

The GENIUS Act, signed on July 18, 2025, enters into operational effect on January 18, 2027, and sets July 18, 2028, as the day digital asset service providers will no longer be able to offer U.S. users stablecoins that do not come from an authorized issuer or a qualified foreign issuer. The regulations intended to flesh it out arrived late at almost every agency, as we documented in the review of the missed July 18, 2026 deadline. For authorized issuers with more than $50 billion in circulation that do not already report to the SEC, the law adds a requirement: annual financial statements in accordance with US GAAP, audited by a firm registered with the PCAOB (the U.S. audit oversight body created after Enron) in accordance with the "applicable auditing standards" of that body — an adjective, "applicable," whose definition was left to the regulator, in addition to monthly reserve reports certified by the CEO and CFO and examined by a registered accounting firm. With 184.589 billion USD₮ issued as of June 30, 2026, Tether is nearly four times above the threshold.

The regulatory proposal published by the FDIC on April 7, 2026, breaks down that mandate into the details that matter here: the audit engagement must be executed under PCAOB standards or, for non-public entities, under GAAS or PCAOB standards; the audited statements must be published on the issuer's website; and they must be delivered to the FDIC within a maximum of 120 days after the close of the fiscal year. The rule is still in the comment phase, so the admission of GAAS for non-public companies remains pending the final text. With that text on the table, the KPMG audit under AICPA standards fits the expected standard for an entity like Tether International; what no version of the text allows is a report that is not published.

There is a nuance regarding legal perimeter: these obligations fall on authorized issuers, and Tether International has not applied to become one. Its domestic route is USAT, the separate product compliant with the GENIUS Act with Anchorage as the issuer and Cantor Fitzgerald as the custodian, live on Ethereum since January 27, 2026, as reported by Bloomberg, within the map we drew in the corporate war preceding the regulation. For USD₮ to continue reaching U.S. users after July 18, 2028, the available path is that of a qualified foreign issuer, which will depend on regulatory comparability determinations yet to be issued. The August 13 audit is material for that future file, and against the list of requirements, it stands as follows:

Why does the same date give Tether 6.338 billion according to BDO and 6.814 according to KPMG?

December 31, 2025, now has two official snapshots of the same entity's excess reserves, and they differ by $476 million. The first is BDO's attestation on the Financial Figures and Reserves Report as of that date, published by Tether with figures to the cent: $192,877.7 million in total assets, $186,539.9 million in liabilities —of which $186,450.6 million are in issued digital tokens— and, by direct subtraction, a $6,337.8 million surplus. The second is what the August 13 note attributes to the statements audited by KPMG: reserves exceeding liabilities by $6.814 billion on the identical date, this time under US GAAP.

The two figures come from two different measurement frameworks applied to the same day, and only one side can be recalculated from the outside. On BDO's side, everything is published, including the valuation policies for each category and the six limitations inherent to an ISAE 3000R attestation that we already broke down in the analysis of Tether's second quarter. On KPMG's side, there is a single figure without components. With the available documents, the candidates to explain the $476 million are three:

1. Which assets count: The FFRR portrays the reserves backing the tokens, while a US GAAP balance sheet includes all assets and liabilities of the company, whether they back tokens or not.
2. How they are valued: Starting with fiscal years beginning in 2025, US GAAP requires crypto-assets to be carried at fair value with changes in earnings (FASB's ASU 2023-08 standard), a criterion that does not necessarily align line-by-line with FFRR policies.
3. What is computed as a liability: The FFRRs record a class-action lawsuit in New York courts regarding the 2017-2018 Bitcoin crash, without a provision because the company states it cannot estimate the outcome; how GAAP statements treat that litigation —provision, disclosed contingency, or both— is information that currently does not exist outside the report.

Closing the bridge line-by-line would require the full statements. As long as they remain private, the reconciliation between 6,338 and 6.814 remains a set of organized hypotheses, and the most cited audited figure of the year is also the only one on Tether's balance sheet that cannot be recalculated with public documents.

Where can Tether's audited statements be read?

Nowhere, as of August 19, 2026. Reuters wrote it plainly on August 14: "the audit, which has not been made public, represents a move by Tether to reassure markets." FinanceFeeds added the company's stance citing an internal source: the documents are shared with regulators and banks that request them, and privacy is maintained because it is a non-public company. This is a legally impeccable position —no current regulation forces Tether to publish— and it leaves the milestone in a peculiar category: the market knows of the existence of the opinion and a headline figure, yet no external analyst has read the report containing them.

The immediate point of comparison is Circle, the issuer of USDC: it has been listed on the NYSE since June 2025, and its audited accounts can be downloaded from EDGAR, the SEC's public archive. The contrast of auditors between both issuers is covered in the comparison between USDC, USDT, and decentralized alternatives. And the counterexample of why the document matters more than the announcement is recent: in the msUSD attestation crisis, the difference between claiming backing and being able to verify it was exactly the problem. The FDIC proposal turns this comparison into a schedule: if Tether International ever aspires to issuer status with full access to the U.S. market, publishing statements on its website will shift from a voluntary gesture to a requirement.

What perimeter does the audit cover: the USD₮ issuer or the Tether group?

KPMG's opinion covers Tether International, S.A. de C.V., and criticism following the announcement focused there, as reported by The Block on August 14: the audit reaches only the issuer; the rest of the group is excluded from the engagement. Orbiting the Salvadoran company are the historic Tether Limited, the firm's investment business, and the U.S. vehicle for USAT with its own structure. Tether's own communication provides the scale of the gap: the Q4 2025 attestation note boasts of a proprietary investment portfolio "exceeding $20 billion — a portfolio that the company itself presents as separate from the reserves backing the tokens —," and an entity whose audited equity is around $6.814 billion cannot contain that entire portfolio. The arithmetic suggests that most of the investment business lives outside the audited perimeter; confirming this would require the full statements or a consolidated group audit, neither of which exists publicly.

Ardoino responded to these objections on August 14 with the phrase The Block used as a headline: "Honestly, I don't care. We proved ourselves many times." He shifted the burden of proof to the operational track record: in 2022, Tether redeemed $7 billion in about 48 hours, around 10% of its reserves at the time, without suspending redemptions—something he claims few traditional financial institutions could withstand. Both things can be true at once: the redemption history is an operational fact verified at the time, and the perimeter of KPMG's opinion is what it is. For anyone evaluating the announcement, the useful question is not whether the audit is valid —an unqualified opinion from a Big Four firm on the issuer is strictly more information than existed on August 12— but rather what part of the group is left out of it.

Does the audit change USDT's status in Europe under MiCA?

It changes nothing in the short term, because Tether's European file is not blocked by a lack of an audit: it is empty because the company never submitted it. Authorization as an EMT (Electronic Money Token) issuer under MiCA is a licensing process before a national authority in the European Economic Area, and the registry of ESMA, the European markets supervisor, as of July 31, 2026 —21 authorized issuers covering 24.7% of the global stablecoin market— still shows no application from Tether, as we documented in the analysis of the EMT registry. A Big Four audit would be a valuable annex in that application if it ever exists; meanwhile, the practical situation of USDT in Europe —legal holding, banned purchase on regulated exchanges— is the same on August 14 as it was on August 12.

Will there be a Tether audit every year or was it a one-time exercise?

The official note does not set a recurring commitment. The most citable clue is Ardoino's phrase —"we see it as the beginning"— and information from FinanceFeeds, which attributes to the company the intention to repeat the full audit every year while maintaining BDO's quarterly attestations. Until a second engagement has a date, the verifiable status is this: one closed audit for 2025 and a quarterly series of attestations for everything thereafter.

This division of roles has a specific temporal consequence. KPMG's opinion portrays December 31, 2025, meaning a balance sheet that was 7.5 months old on the day of the announcement. Everything that has happened in 2026 with the reserve buffer —the peak of 8,232 million in March and the drop to 4,110 million in June, dragged down by the price of gold and Bitcoin— remains documented only by attestations, with the scope limitations we already detailed. If the audit becomes annual, the one for fiscal year 2026 will be the first to subject to an opinion the year in which that buffer moved most violently; it would arrive, following this pattern, around the summer of 2027.

What should be watched in the Tether file until January 18, 2027?

Five pieces are moving on this board in the coming months, all with identifiable dates or triggers. The FDIC's final rule on reporting and audits, whose April 7, 2026 proposal closed comments 60 days after its entry in the Federal Register, will determine if the GAAS route for non-public companies survives the final text. The eventual publication of the 2025 audited statements —a single PDF— would instantly check the statement publication box of the GENIUS file and allow for the reconciliation of the 476 million. BDO's third-quarter attestation, which following the 2026 cadence should arrive toward the end of October, will update the buffer from June's 4,110 million. Comparability determinations for foreign issuers will specify exactly what Tether International will need to prove to continue serving the U.S. market after July 18, 2028. And the announcement, or lack thereof, of an audit engagement for fiscal year 2026 will turn the word "beginning" into a data point or a press release phrase. August 13, 2026, will remain the day Tether fulfilled a 2017 promise; what that file is worth at the July 18, 2028 cutoff will be decided by these five pieces.

Sources and links: Official Tether Note (Aug 13, 2026) · BDO Attestation as of Dec 31, 2025 (Tether note) · The Block (Aug 13, 2026) · The Block (Aug 14, 2026) · Reuters via Yahoo Finance (Aug 14, 2026) · FDIC Proposal (Thomson Reuters, Apr 2026) · CAQ: Accounting requirements of the GENIUS Act · GENIUS Act Text (PLAW-119-27, govinfo — Congress.gov) · CoinDesk (Aug 13, 2026) · FinanceFeeds — annual recurrence and report distribution criteria