S9 Ep24: Stablecoins and Global Imbalances

Episode Summary

Executive Summary: The episode explains how stablecoins—private digital tokens backed mainly by short-term U.S. government debt—may help finance U.S. deficits and strengthen dollar demand, while also creating risks for banks, monetary control, regulation, and Europe. Gilles Moec argues the technology is useful but needs far better transparency and supervision to avoid financial instability and abuse.

Main Topics: What stablecoins are and why they matter (Priority: 5/5): Stablecoins are private digital payment tokens designed to hold a fixed value against fiat currency by being backed with safe, liquid assets such as U.S. T-bills. They offer fast, programmable, 24/7 settlement and are distinct from central bank digital currencies. Market size and economic relevance (Priority: 5/5): Although still relatively small, the stablecoin market is growing quickly and is already influential in short-term U.S. funding markets, including T-bill demand and short-term rates. Stablecoins as a tool for U.S. financing and dollar power (Priority: 5/5): By attracting global users—especially in emerging markets—stablecoins can create structural demand for dollars and help the U.S. fund deficits at low cost, but also raise questions about external vulnerability. Risks to banks, credit creation, and monetary stability (Priority: 4/5): If stablecoins displace deposits, they could weaken banks’ ability to create credit and transmit money into the economy, creating a disconnect between money supply and economic needs. Regulatory gaps in the U.S. and Europe (Priority: 5/5): The U.S. Genius Act sets a framework but leaves significant detail to future regulators and state-level competition; Europe’s MiCA is stricter but the market is less developed there. Historical parallel with the National Banking Acts (Priority: 3/5): Moec compares today’s stablecoin model with 19th-century U.S. bank notes backed by government debt, noting that money creation then became overly tied to public debt levels. Future evolution toward digital money market funds (Priority: 4/5): Because stablecoins usually pay no interest, the next wave may be digital money market funds that preserve the same convenience while offering returns, increasing competition for banks and asset managers.

Key Arguments: Stablecoins are not central bank money; they are private liabilities backed by liquid reserves, typically U.S. Treasury bills, and users do not directly hold the underlying securities. The main growth driver is yield arbitrage: platforms earn the spread between interest on T-bills and zero interest paid to stablecoin holders, since U.S. law prohibits paying interest on stablecoins. Stablecoins may support the U.S. by expanding foreign demand for dollar assets, especially among users in emerging markets who lack trustworthy local banking systems or legal access to dollars. The U.S. external position has weakened: its income balance turned negative in 2024 for the first time in modern data, making additional foreign financing more attractive to policymakers. A rapid shift from deposits into stablecoins could impair banks’ credit creation and disrupt the normal relationship between money supply and economic activity. Stablecoins can be useful for cross-border payments and digital settlement, so the case is not for banning them outright but for ensuring real-time transparency about reserves, supervision, and liabilities. Regulation remains incomplete: the U.S. framework relies on future rulemaking and state-level oversight, while Europe’s stricter regime may be too cautious to foster domestic stablecoin growth. There is also an international information problem: loose stablecoin regulation could facilitate tax evasion, abuse, and financial risk, so coordinated disclosure standards are needed.

Data Points: Stablecoin market size: Just under $300 billion - Latest estimate cited for the global stablecoin market. Share of net T-bill issuance absorbed: Up to 20-25% - Estimated portion of net short-dated U.S. Treasury bill issuance absorbed by stablecoin reserve demand at times. T-bill maturity: Up to 3 months - Typical maturity of U.S. government securities used to back stablecoin reserves. Interest rate on backing assets: About 4% - Example given for a three-month U.S. Treasury bill during the recent rate-hike period. Interest paid on stablecoins: 0% - Stablecoins generally do not pay interest, and U.S. law prohibits paying interest on them. Regulatory transition period: About 3 years - Genius Act grace period while detailed regulation is finalized. Share of stablecoins issued in dollars: About 99% - Most existing stablecoins are dollar-denominated. U.S. income balance: Turned negative in 2024 - First time in modern balance-of-payments data, according to the discussion.

Pivotal Quotes: "It is a digital means of payment." — Gilles Moec: He gives a plain-language definition of stablecoins and their core function. "Yes, you don't know it, but actually it is what you do." — Gilles Moec: He explains that buying a dollar stablecoin effectively channels funds into U.S. government debt via reserve holdings. "We should not ban it outright." — Gilles Moec: He argues for regulation and transparency rather than prohibition of stablecoins.

Implications: Stablecoins are likely to persist and reshape payments, dollar demand, and competition in finance. The big issue is not whether they exist, but whether regulators can ensure transparent reserves, clear supervision, and limits on systemic and cross-border risks.