Stablecoins Boost Demand for Short-Term U.S. Treasuries

Regulated dollar stablecoins are increasing demand for short-term U.S. Treasury bills as issuers build liquid reserves to meet redemptions. Federal Reserve staff estimated stablecoin market capitalization at $317 billion on April 6, 2026, more than 50% above early-2025 levels.

An analysis by the Treasury Borrowing Advisory Committee through September 2025 found that Treasury bills made up 53% of assets at major issuers Tether and Circle, and that those holdings rose by about $70 billion since 2022. Even with that increase, stablecoin issuers hold less than 1% of total outstanding Treasury securities.

Regulatory changes are affecting issuer behavior. The GENIUS Act, enacted in July 2025, requires one-to-one permitted reserves, redemption at par, disclosures, supervision and anti–financial-crime controls for payment stablecoins. Treasury expected the main requirements to take effect on Jan. 18, 2027 unless implementing rules make parts effective earlier. A broader restriction on payment stablecoins offered by unlicensed issuers is scheduled to begin July 18, 2028.

A separate bill, CLARITY, passed the House and advanced in the Senate Banking Committee; an updated Senate text was released on July 22. The proposal would assign jurisdiction between the SEC and the CFTC and set rules for trading platforms and intermediaries.

Federal Reserve staff reported differences in reserve quality across issuers. USDC reported reserves equal to its liabilities. USDT reported total reserves at about 1.04 times liabilities but higher-quality reserves near 0.74 times liabilities. Regulators say standardizing reserve requirements and supervision can narrow such gaps and make redemption promises more credible.

In testimony to Congress on Sept. 2, Circle president Heath Tarbert argued that placing digital-dollar infrastructure under U.S. rules could reinforce the network effects that support the dollar. He added that “payment technology cannot substitute for sound economic policy” and that “digital infrastructure cannot preserve dollar primacy on its own.”

Bank for International Settlements researchers estimate roughly 98% of stablecoin value is denominated in U.S. dollars. IMF COFER data showed the dollar accounted for 57.13% of allocated global foreign-exchange reserves in the first quarter of 2026, up from 56.42% in the fourth quarter of 2025, with about half of that quarterly increase attributable to exchange-rate valuation effects.

Federal Reserve staff warned that complex intermediation, vertical integration and tighter links to traditional finance can raise opacity and contagion risk and could amplify operational or liquidity failures. BIS researchers noted risks that broad private adoption of dollar stablecoins could affect currency substitution, monetary-policy traction and capital controls in some countries and could redirect savings in some emerging markets toward U.S. Treasury bills.

The figures published by authorities show growing private demand for the shortest-maturity U.S. government debt as issuers seek liquid, safe assets to back tokens. Official reserve allocations by central banks remain determined by fiscal credibility, institutions, market depth and valuation changes.