Agustín Carstens, former general manager of the Bank for International Settlements, reversed his longstanding opposition to stablecoins at the Point Zero Forum in Zurich on June 23, 2026. Speaking to an audience of central bankers and regulators, Carstens called for conditions where "fiat money a...
"I have been known for some years to be very negative on crypto and stablecoins. I have come to appreciate what stablecoins can do to promote financial innovation, inclusion and to reduce costs." — Agustín Carstens, Former General Manager, Bank for International Settlements
Agustín Carstens, former general manager of the Bank for International Settlements, reversed his longstanding opposition to stablecoins at the Point Zero Forum in Zurich on June 23, 2026. Speaking to an audience of central bankers and regulators, Carstens called for conditions where "fiat money and stablecoins" can coexist — a position directly contradicting his January 2022 warnings that stablecoins might not function as "sound money" because issuers have incentives to invest reserves "in a risky manner."
The reversal arrives as total stablecoin market capitalization hits $321 billion, stablecoin settlement volume exceeds $33 trillion annually (surpassing Visa and Mastercard combined), and U.S. regulators finalize implementation rules for the GENIUS Act. Simultaneously, Carstens' successor at the BIS, Pablo Hernández de Cos, maintains that the stablecoin market "remains small" and that current stablecoin structures "constrain their capacity to serve as a means of payment." The divergence between former and current BIS leadership encapsulates a broader institutional fracture over whether stablecoins represent systemic risk or systemic infrastructure.
At the Point Zero Forum on June 23, 2026, Carstens told attendees that the "interaction between private and public sector can be very, very powerful" and called for regulators to find a "sweet spot" between innovation and stability. He stated that if proper regulations and level competitive playing fields were established, stablecoins could "flourish in a dramatic way."
This represents a material shift. During his tenure as BIS general manager (2017–2025), Carstens was among the most prominent institutional critics of private digital currencies. In a January 2022 speech, he warned that stablecoins "may not function as sound money" due to issuers' incentive structures. The BIS under his leadership published multiple reports cautioning against stablecoin adoption without central bank oversight.
Carstens did add a caveat: "If we really want a global system where stablecoins can interact with global currency, this has to be a cooperative effort worldwide. And I see this lagging behind." He also advocated for central banks to prioritize wholesale CBDC development as a complementary track — not a replacement — for private stablecoin infrastructure.
The speech was not made in an official BIS capacity. Carstens now serves on the advisory board of the Global Finance & Technology Network. His position nonetheless carries weight given his seven-year tenure atop the institution that coordinates global central bank policy.
The stablecoin market has grown to the point where institutional ambivalence is no longer tenable. Key metrics as of mid-2026:
| Metric | Value | Source | |--------|-------|--------| | Total stablecoin market cap | $321 billion | DefiLlama, June 2026 | | Annual settlement volume (2025) | $33 trillion | Industry estimates | | Projected 2026 settlement volume | $50+ trillion | Analyst projections | | Tether (USDT) market cap | ~$188 billion | Tether transparency page | | Circle (USDC) market cap | ~$78 billion | CoinGecko | | USDT + USDC combined market share | ~83% | CoinMarketCap | | Dollar-denominated share of market | ~98% | CoinDesk, May 2026 | | B2B share of stablecoin flows | ~60% | Industry data | | Financial institutions using/piloting stablecoins | ~90% | Industry surveys |
The $33 trillion in 2025 settlement volume exceeds Visa ($15.7 trillion) and Mastercard ($9.8 trillion) combined. Analysts project this figure will surpass $50 trillion by end of 2026, according to Chainalysis and other research firms. Approximately 60% of current flows are now business-to-business — cross-border treasury management, supplier payments, and procurement — rather than retail crypto trading.
Over 550 million users interact with Tether's USDT alone. Circle's USDC supports more than $78 billion in circulation. The two issuers control roughly four-fifths of the entire stablecoin ecosystem.
The divergence between former and current BIS leadership is not rhetorical. It reflects a genuine policy disagreement at the highest level of global central bank coordination.
Carstens' position (June 2026): Stablecoins can promote financial innovation, inclusion, and cost reduction. Coexistence with fiat money is achievable through proper regulation.
Hernández de Cos' position (April 2026): In a speech at a Bank of Japan seminar on April 20, 2026, the current BIS general manager warned that if stablecoins are "widely adopted in their current form," they would "pose policy challenges in areas ranging from credit provision to monetary policy, with risks to financial integrity and regulatory evasion looming large."
Hernández de Cos identified specific structural deficiencies: stablecoins in their current form lack the ability to redeem at par for central bank money; they have "design features that lack protection against financial crime"; they lack interoperability across ledgers; and their near-total denomination in U.S. dollars "could challenge monetary sovereignty in some economies."
He called global coordination on stablecoin regulation a matter of "critical importance" and warned that divergent regulatory frameworks could lead to "severe market fragmentation or enable harmful regulatory arbitrage."
The split matters because the BIS sets the normative framework that central banks worldwide use to calibrate their own policies. A BIS general manager explicitly opposing a former BIS general manager — on a topic as consequential as the legitimacy of private digital money — signals that global consensus on stablecoins has not formed and may not form soon.
While the BIS debates, the United States is building. The GENIUS Act (Guiding and Establishing National Innovation for U.S. Stablecoins), signed into law on July 18, 2025, created the first comprehensive federal framework for stablecoin issuance.
Implementation is now underway. The OCC published proposed rules in March 2026. The FDIC Board approved its own notice of proposed rulemaking on April 7, 2026. The Treasury Department published anti-money laundering and sanctions compliance requirements, with the comment period closing on June 9, 2026.
Key provisions of the GENIUS Act and implementing rules:
According to reporting by The American Prospect on June 24, 2026, federal regulators are finalizing GENIUS Act implementation rules, with critics from both progressive lawmakers and the banking industry expressing concern that "crypto firms are getting everything they want" in the rulemaking process.
Tether reported $1.04 billion in net profit for Q1 2026, with total assets just under $192 billion against liabilities of $183.5 billion. Its reserve buffer — the excess of reserves over stablecoin liabilities — reached an all-time high of $8.23 billion.
The composition of Tether's reserves tells its own story. Direct and indirect exposure to U.S. Treasuries reached $141 billion, making Tether the 17th-largest holder of U.S. government debt globally. The firm also held approximately $20 billion in physical gold and $7 billion in Bitcoin.
Tether has never completed a full audit by a Big Four accounting firm. Its quarterly disclosures are attestations — point-in-time snapshots verified by BDO Italia — not audits. The distinction is material: an attestation confirms a specific assertion on a specific date, while an audit examines underlying systems, controls, and processes across a reporting period.
In March 2026, Tether announced that KPMG would conduct its first full financial audit, with PwC engaged to organize internal files and systems. As of June 2026, the audit is ongoing with no published results.
This creates a structural tension in the market. The world's largest stablecoin — holding more U.S. Treasuries than most countries — has never had its books fully examined by an independent auditor. This is the specific vulnerability that Hernández de Cos and other central bankers point to when they argue that stablecoin infrastructure lacks the robustness required for systemic adoption.
Approximately 98% of all stablecoins are denominated in U.S. dollars. Non-dollar stablecoins have grown to about $771 million in total supply since 2021, but their share of the market has actually declined to 0.24%, according to CoinDesk reporting from May 2026.
The breakdown of non-dollar stablecoins as of March 2026:
| Currency | Market Share (of total stablecoin market) | |----------|------------------------------------------| | Euro-denominated | ~0.3% (~€500 million market cap) | | Brazilian Real-denominated | ~0.5% | | Yen-pegged | ~0.01% |
This concentration creates the paradox Hernández de Cos identified: widespread stablecoin adoption, in its current form, extends U.S. dollar influence into jurisdictions that may not want it. For European, Asian, and emerging-market central bankers, stablecoins are not a neutral technology. They are a dollar-distribution mechanism.
At the Point Zero Forum, organizers noted that 97% of the global stablecoin market is dollar-denominated, framing "European Stablecoins" as a key agenda topic. The EU's MiCA regulation, which took full effect in 2025, provides a framework for euro-denominated stablecoins, but adoption remains marginal.
Japan launched three yen-denominated stablecoins in June 2026 under its recently enacted framework, but it is too early to measure traction.
The dollar dominance of stablecoins also explains why U.S. policymakers — across both parties — have moved to regulate rather than restrict them. Stablecoins, as currently structured, extend dollar demand. The $141 billion in U.S. Treasuries held by Tether alone represents a non-trivial source of demand for government debt.
The stablecoin sector is now too large for any single institutional actor to ignore. Three data points summarize the situation:
1. Scale: $321 billion in market capitalization, $33 trillion in annual settlement volume, and projected to exceed $50 trillion in 2026. These are not experimental numbers. They represent settlement infrastructure operating at a scale comparable to legacy payment networks.
2. Concentration risk: Two issuers (Tether and Circle) control approximately 83% of the market. One of them (Tether) has never completed a full independent audit. Circle, which went public in mid-2025 at a $18 billion valuation, generated $1.25 billion in H1 2026 revenue, of which 95.5% came from interest on reserve assets. The business model of both major issuers is essentially a spread trade on U.S. Treasuries — collect deposits in the form of stablecoin issuance, invest in short-duration government debt, and pocket the yield.
3. Regulatory asymmetry: The U.S. is building a comprehensive federal framework (GENIUS Act). The EU has MiCA. The UK has proposed a £40 billion cap on individual stablecoin issuers. Japan has launched its licensing regime. But as Carstens noted, global coordination "is lagging behind." The BIS itself is internally divided on whether to support or resist stablecoin integration.
The stablecoin market has crossed a threshold where institutional resistance is no longer a viable position. Carstens' reversal at Point Zero Forum is a lagging indicator of this reality, not a leading one. The $321 billion market, the $33 trillion in annual settlement volume, and the 550 million USDT users existed before he spoke. His words ratified what the data already showed.
The unresolved question is not whether stablecoins will be integrated into the global financial system — that integration is underway. The question is on whose terms. The U.S. framework (GENIUS Act) effectively reinforces dollar dominance through private-sector stablecoin issuance backed by Treasury reserves. The BIS under Hernández de Cos warns that this structure threatens monetary sovereignty elsewhere. Europe and Asia are attempting to build alternatives but have thus far failed to achieve meaningful market share.
Tether's pending KPMG audit will serve as a stress test for the sector's credibility. If a Big Four firm signs off on the reserves of an entity holding more U.S. government debt than most nations, it removes the last substantive objection to stablecoin integration at the institutional level. If the audit reveals material discrepancies, the consequences would ripple through a market that now settles more value annually than the world's two largest payment networks combined.
The data suggests stablecoins have moved from a crypto-native instrument to global financial infrastructure. The policy apparatus is still catching up.