Stablecoin issuers could nearly double their holdings of short-term Treasury securities to approximately $400 billion by the end of 2030 if current growth patterns persist, according to a new economic letter published September 29, 2026, by the Federal Reserve Bank of San Francisco. The report documents how these digital currency providers have emerged as an increasingly significant source of demand for U.S. government debt, partly compensating for declining interest from major foreign governments. While their share remains relatively modest, the trend reflects a notable shift in who finances America's growing national debt.
Over the past five years, stablecoin issuers have increased their Treasury holdings by roughly $200 billion, covering more than 40% of China's decline in holdings during the same span. The two largest stablecoins by market capitalization, Tether and USD Coin, represent over 80% of the market and maintain one-to-one convertibility with the U.S. dollar. Since 2023, these issuers have added more short-term Treasury securities to their portfolios than Japan, the largest non-U.S. holder of such debt. Meanwhile, the share of U.S. debt held by foreign entities has dropped from over 50% around 2008 to roughly 30% in early 2026, driven partly by China's decision to diversify away from American securities after peaking in late 2013. Foreign governments' share of all foreign demand for Treasuries has fallen from nearly 100% in the 1970s to just above 40% by early 2026.
The report emphasizes that stablecoin issuers hold these assets to protect against potential runs by investors doubting their ability to redeem holdings at par value. According to the Federal Reserve analysis, some research already shows that stablecoin issuers' demand for Treasury securities is "large enough to have a measurable impact on short-term government bond yields." The report notes that stablecoin demand has climbed among novel sources offering convertibility to the U.S. dollar, with these firms holding liquid assets—particularly short-term Treasury securities—to maintain that promise. The GENIUS Act adopted in 2025 now requires domestic issuers approved under the legislation to back stablecoin issuance one-to-one with high-quality liquid assets such as Treasury bills.
The shift matters because private investors are more sensitive to changes in global interest rates than foreign governments, potentially threatening what the report calls America's "exorbitant privilege" of financing debt at relatively low rates. The Federal Reserve letter explains that if U.S. debt were perceived as riskier, the larger share of private investors could start requiring greater compensation to hold Treasury securities. Stablecoin usage is higher relative to GDP in Africa, the Middle East, and Latin America, with most transactions being international, suggesting these digital currencies reduce cross-border transaction costs and provide a safer store of value where local currencies are volatile. However, the projection carries substantial uncertainty—stablecoin market growth will depend heavily on worldwide regulations and competing products, including new technologies from banks that could ease cross-border digital currency payments.
Even if stablecoin issuers reach $400 billion in Treasury holdings by decade's end, that amount would remain a small fraction of the U.S. government's overall financing requirements. The report concludes that while this increase in demand would be more noteworthy than current levels, it won't solve Washington's fundamental challenge of funding federal debt that's risen from about 35% of GDP in 2006 to roughly 100% today. For now, stablecoins represent an emerging but limited counterweight to the declining appetite for American debt among traditional foreign government buyers.