Has rising Treasury supply eroded the revenue from issuing safe assets?
Core argument: Fiscal expansion over the past two decades and the resulting rise in Treasury supply depressed convenience yields heterogeneously across maturities, driving them to zero for short-term Treasurys and into negative territory for long-term Treasurys, reducing the seigniorage revenue the U.S. earns from issuing safe, liquid assets.
The fiscal expansion in the past two decades and the resultant increase in Treasury supply depressed convenience yields heterogeneously across maturities-driving them to zero for short-term Treasurys and into negative territory for long-term Treasurys. As a result, the seigniorage revenue earned by the U.S. for issuing safe and liquid assets declined. Although the U.S. Treasury shortened its debt maturity structure in recent years, we show this adjustment is unable to fully offset the negative effect of debt quantity increase nor recover the seigniorage revenue that the U.S. historically earned. If the U.S. government’s capacity to issue long-term debt without eroding the convenience yield is limited, international investors may seek alternative safe assets to meet their long-term investment needs. This shift could reduce global demand for U.S. Treasurys, potentially impacting the U.S. dollar’s dominance in international finance and the benefits that accrue to the U.S. from its reserve currency status


