Stablecoins are experiencing explosive growth as a means of settlement. In 2024, they processed more transactions than Visa and Mastercard combined. Unlike “pure” cryptocurrencies, which are issued without any backing and whose value is inherently speculative and highly volatile-since it depends solely on the self-referential opinion of the market-stablecoins are cryptocurrencies backed by assets such as the dollar. For each unit of stablecoin issued and purchased in exchange of any currency, the amount received is immediately used to buy U.S. dollars and invested in U.S. Treasury securities. It is this one-to-one rule that makes these specific cryptocurrencies “stable” rather than purely speculative.
Amid rising uncertainties in the U.S. bond market, reflected by a reduction in Treasury purchases, the United States sees stablecoins as a strategic opportunity: to attract new demand for its sovereign debt and reinforce the dollar’s dominance in global trade. Indeed, the more dollar-backed stablecoins are used internationally, the more issuers must acquire U.S. debt to guarantee their value. Washington thus could use stablecoins as a tool to refinance its external debt while expanding the dollarization of the global economy. The recent adoption of the Genius Act bill, supported by the U.S. administration, aims to support and regulate the development of dollar-backed stablecoins, giving American issuers a competitive advantage and consolidating the dollar’s supremacy.
This strategy is not without risk for the rest of the world. The possible massive adoption of dollar-backed stablecoins could accelerate capital flight from emerging or fragile economies, as citizens seek protection from inflation or currency devaluation by turning to these stable payment methods. More broadly, stablecoins weaken the monetary sovereignty of countries outside the United States, reduce their ability to finance their economies with local savings, and expose their financial systems to risks of banking disintermediation. The global reallocation of savings toward stablecoins backed by U.S. debt diverts resources from local private sector financing to the benefit of the U.S. Treasury. National banks, deprived of deposits, see their lending capacity shrink accordingly, slowing economic growth in these countries.
Finally, the expansion of stablecoins poses major challenges in terms of regulation, anti-money laundering efforts, and consumer protection. These assets can circulate without constraint, facilitating illicit flows and eroding the integrity of financial markets.
Ultimately, increased dependence on the dollar via stablecoins further entrenches the asymmetry of the international monetary system, making economies-especially emerging ones-even more vulnerable to U.S. monetary policy decisions.
In sum, by developing dollar-backed stablecoins, the United States has gained an unprecedented lever to further dollarize global trade and refinance its external debt. But this strategy imposes significant risks on the monetary sovereignty, financial stability, and economic development of the rest of the world.
But it’s a double-edged sword for the United States. Stablecoins can also accelerate both the appreciation and depreciation of the dollar, thereby increasing macro-financial volatility.
Olivier Klein
Professor of Economics at HEC and Banker