Stablecoin Reserve Transparency: USDC vs USDT vs PYUSD Audits

By Chanuka Geekiyanage Oct 29, 2026

Stablecoin reserve transparency is the difference between knowing a token is backed and being told it is. USDC, USDT, and PYUSD all claim 1:1 backing, but they prove it differently. Circle and Paxos publish monthly attestations, while Tether published quarterly attestations and only announced its first full KPMG audit in August 2026, without releasing it. This article compares what each issuer discloses, what those reports do and do not prove, how new US rules change the picture in January 2027, and which token suits which kind of user.

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Attestation vs Audit: What Each Report Proves

An attestation only verifies specific information, such as the size and composition of reserves on a given date, while a full audit reviews the issuer’s whole accounting system. Most readers treat the two as the same thing. They are not.

Report type	What it checks	What it cannot tell you
Reserve attestation (USDC, PYUSD, USDT quarterly)	Whether the issuer’s reserve report matches its records on one date	Moves between dates, internal controls, counterparty health
Full financial audit (Tether’s KPMG audit)	Full-year financial statements, systems, ownership records and valuations	Day-to-day reserve changes. Also useless to outsiders if never published.
Daily holdings feed (Circle Reserve Fund)	Fund-level Treasury and repo positions	Any cash held outside the fund

If you want a step-by-step method for reading the documents themselves, start with this guide on how to read USDT and USDC reserve reports.

USDC: The Most Verifiable Reserve Trail

Circle reported $73.3 billion of USDC in circulation at the end of Q2 2026. Most reserves sit in the Circle Reserve Fund, an SEC-registered government money market fund managed by BlackRock and custodied at BNY, with daily disclosure of Treasury holdings. That daily feed gives you something to check between monthly reports.

S&P Global notes that Deloitte & Touche reviews the monthly attestations. Circle is also a listed company that publishes quarterly results. In Q2 2026 it received final OCC approval for Circle National Trust, one of the first federal bank charters held by a stablecoin issuer.

Transparency did not prevent the biggest USDC scare. In March 2023, USDC briefly lost its peg after Circle disclosed that $3.3 billion, about 8% of reserves, was exposed to Silicon Valley Bank. Circle has since moved most reserves into the BlackRock-managed fund to reduce reliance on any single bank.

USDT: Better Disclosure Than Before, Still the Hardest to Verify

Tether’s Q2 2026 attestation showed about $187.75 billion in assets against about $183.64 billion in liabilities on June 30, a surplus of roughly $4.11 billion. That is a cushion of about 2.2% of liabilities. The surplus had been $8.23 billion at the end of March.

The reserve mix explains some of the swing. Tether’s bitcoin holding rose by 1,796 BTC to 98,933 coins, but its value fell from $6.62 billion to $5.8 billion. Tether also holds more than 146 metric tons of gold and cut its secured lending exposure by about $2.38 billion in the quarter. Bitcoin, gold, and loans are not cash, and their values move.

The audit news is real progress. Tether said KPMG U.S. issued an unqualified opinion on its 2025 financial statements, which showed reserves exceeding liabilities by $6.814 billion. KPMG also physically counted the gold bars.

There is a catch. Neither the audited statements nor KPMG’s full report has been published. The audited surplus was also higher than the $6.34 billion reported in the Q4 2025 attestation for the same balance sheet date, and without the statements, you cannot see why.

Past conduct still matters for trust. Tether agreed to an $18.5 million settlement with the New York Attorney General over allegations it concealed losses and misled investors about USDT’s backing. USDT is also absent from MiCA-licensed EEA venues after Tether declined to seek e-money token authorization. Tether’s US-focused token, USAT, received a Deloitte attestation on just $17.6 million of reserves, so it is not yet a substitute.

PYUSD: Regulated Issuer, Smaller Disclosure Footprint

PYUSD is issued and custodied by Paxos Trust Company, N.A., not by PayPal. Paxos publishes a monthly self-report that has not been independently reviewed, plus a separate monthly attestation. Attestations posted on or after February 28, 2025 are issued by KPMG LLP; earlier ones came from WithumSmith+Brown.

Check the lag. When one data provider checked the attestation index on August 18, 2026, it listed reports for January through June but none for July. That is normal for monthly reporting, but it means you are always looking at a reserve picture several weeks old.

Paxos’ supply was about 3.0 billion PYUSD, and the OCC gave conditional approval on December 12, 2025, for Paxos to convert into a national trust bank. Neither PayPal’s nor Paxos’ pages claim FDIC insurance for PYUSD. The structure is sound, but the evidence you can check is limited to the monthly reports.

Image source: Paxos PYUSD transparency

Side-by-Side Comparison

On October 17, 2026, DefiLlama showed USDT at $183.43 billion and USDC at $72.72 billion, together 84.67% of a $302.5 billion stablecoin market. Size does not equal transparency, as the table shows.

Token	Reviewer and cadence	Reserve detail	Main transparency gap
USDC	Deloitte, monthly attestation	Daily fund holdings plus monthly report	Bank cash outside the fund; attestation is a snapshot
USDT	BDO Italia quarterly attestation; KPMG audit of 2025 statements	Category-level quarterly report	Audit unpublished; $4.11B cushion at June 30
PYUSD	KPMG monthly attestation plus Paxos self-report	Monthly report	Smallest supply (about $3B in August) and several-week lag

Image source: defillama.com/stablecoins

What Changes on January 18, 2027

The OCC issued its final GENIUS Act rule on October 21, 2026, and it takes effect January 18, 2027. Covered issuers must publish monthly reserve composition by noon on the last day of the month, together with a registered accounting firm’s examination report, and the CEO and CFO must certify it. Reserves are limited to cash, Fed balances, demand deposits, Treasuries of 93 days or less, overnight repo and government money market funds, with a 5% on-demand minimum and a 40% single-counterparty cap.

USDC and PYUSD already look like this. Treasuries, repo and a money market fund match the eligible list. Gold, bitcoin and secured loans do not appear on it.

A foreign issuer can serve US customers only after Treasury finds its home regime comparable, and it must hold enough reserves at US institutions to meet US customer demand. My read is that any issuer wanting US access will be pushed toward simpler reserves. Not every GENIUS rule is final yet: the Federal Reserve, FDIC, NCUA and Treasury have their own rules in progress.

Five Checks Before You Rely on a Reserve Report

Report date: note how old it is. A June 30 snapshot read in late October is four months stale.
Reviewer and standard: confirm whether it is an attestation or an audit, and whether the full document is public.
Reserve mix: prefer cash, short Treasuries, and repo. Treat gold, bitcoin, loans, and commercial paper as separate risks.
Surplus size: divide excess reserves by liabilities. Tether’s 2.2% at June 30 is far thinner than the headline $4.11 billion suggests.
Custody and counterparties: find out where cash sits and which banks or funds hold it. This is the lesson of USDC in March 2023.

Risks and Tradeoffs Reports Cannot Remove

Snapshot risk: a clean report covers one date. Reserves can change in the weeks between reports.
Counterparty risk: a fully backed token can still be impaired if a bank holding the cash fails.
Freeze risk: issuers can block addresses. By February 2026, Tether said it had frozen $4.2 billion in tokens linked to illicit activity.
Redemption access: direct USDC redemption with Circle is tiered, so most holders exit by selling on a market, not redeeming. The peg depends on market confidence, not only reserves.
Unpublished assurance: an audit you cannot read protects insiders and investors, not you.

Best Choice by User Type

For a wider look at how these tokens behave on lending and trading venues, see how USDC, USDT and DAI compare in DeFi. The table below covers reserve transparency only.

User type	Recommended option	Reason
DeFi lender or LP wanting the lowest reserve risk	USDC	Deloitte monthly attestations and daily fund holdings
Trader on offshore pairs or remittance routes	USDT, kept to working balances	Deepest liquidity, but a thin cushion and unpublished audit
PayPal or Venmo user	PYUSD, small balances	Convenient, regulated issuer, limited disclosure cadence
DAO or treasury holding large sums	USDC as the core, capped USDT exposure	Verifiability matters most at scale
EU-based user	USDC	USDT is absent from MiCA-licensed venues

My Take

USDC is the strongest choice on reserve transparency today. It has a named Big Four reviewer, monthly reports, a daily holdings feed and reserves that already fit the OCC’s eligible list. Its weak spot is bank counterparty exposure, so check where the cash sits.

USDT is better than it was a year ago, but I would still treat it as a liquidity tool, not a store of value. The KPMG opinion is real progress. A $4.11 billion cushion against $183.64 billion of liabilities, with bitcoin, gold, and loans in the mix, and no publicly audited statements, means you are still trusting Tether more than verifying it.

PYUSD is fine for payments and small balances. I would not make it a DeFi base asset, because supply is small and the evidence trail is a monthly report with a lag. Before using any of the three, I check the report date, the surplus ratio, the reserve mix, and the redemption terms. Choose USDT when its liquidity is the point, and size positions so you can exit. This is research, not financial advice.

Conclusion

On reserve transparency, the ranking is clear: USDC first, USDT second and improving, PYUSD third because of limited disclosure rather than poor structure. The key tradeoff is liquidity against verifiability, since USDT has the deepest markets but the least visible reserve evidence.

The main risks are stale snapshots, bank counterparties, issuer freezes, and audits that stay private. Your next step is simple: open the latest report for each token you hold, note the date, the reviewer, and the surplus, and cap exposure to any issuer whose evidence you cannot read. From January 18, 2027, monthly examined reports for US-regulated issuers should make that comparison easier.

FAQs

1. Is USDT fully audited now?

Tether said KPMG U.S. completed a full audit of its 2025 financial statements with an unqualified opinion. The statements and KPMG’s report have not been published, and BDO Italia attestations continue quarterly.

2. Is USDC safer than USDT?

USDC is easier to verify because of monthly Deloitte attestations and daily fund holdings. Safer in a crisis is less certain, since USDC briefly lost its peg in March 2023 over Silicon Valley Bank exposure.

3. How often should I check reserve reports?

Check USDC and PYUSD each month when new attestations post, and USDT each quarter. Also check before adding a large position and after any depeg news.

4. Will the GENIUS Act force all three tokens to publish audits?

The OCC rule takes effect January 18, 2027 and requires monthly examined reserve reports and annual audited statements for covered issuers. USDT would need to register as a foreign issuer after a Treasury comparability determination to serve US customers.

5. Can a stablecoin with clean reports still lose its peg?

Yes, because reports confirm backing on a date and do not remove counterparty or redemption risk. USDC’s March 2023 depeg happened with reserves disclosed, after $3.3 billion was exposed to a failing bank.

References

Decrypt, Tether Q2 2026 results: https://decrypt.co/374796/tether-reports-1-5b-q2-profit-usdt-supply-grows

Forklog, Tether excess reserves halve in Q2: https://forklog.com/en/tethers-excess-reserves-halve-in-q2/

CoinDesk, Tether KPMG audit: https://www.coindesk.com/business/2026/08/13/tether-says-it-completed-long-promised-big-four-audit-of-finances-behind-usd180-billion-usdt-stablecoin

Cointelegraph, Tether completes first full audit: https://cointelegraph.com/news/tether-completes-first-full-financial-audit-receives-clean-kpmg-opinion

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About the Author: Chanuka Geekiyanage

Chanuka is a content writer, editor and contributor at Panaprium, specializing in long-form editorial articles. He conducts in-depth research and produces well-structured, carefully edited content with a strong focus on clarity, SEO best practices, and consistent formatting. His work spans lifestyle, fashion, wellness, and technical topics, and all articles are reviewed and refined to meet Panaprium’s editorial standards.

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