How much would higher-than-projected interest rates add to federal debt?
Core argument: The ten-year Treasury note closed at 4.30%, its highest level since 2007, while the three-month bill closed at 5.56% and the 30-year bond at 4.41%, all at or near 16-year highs.
The ten-year Treasury Note interest rate closed at 4.30% on Thursday, the highest since 2007. Meanwhile, the three-month Treasury Bill rate closed at 5.56% and the 30-year Treasury Bond at 4.41%. All three are at or near their highest level in 16 years. CBO's most recent baseline projections are based on a ten-year rate of 3.9% and a three-month rate of 4.6% this quarter. Based on this, we estimate that interest rates across the yield curve average about 75bps above baseline projections. If rates remain 75bps above CBO’s projections, it could add $2.3T (6% of GDP) to the debt over the next ten years and $350B (0.9% of debt-to-GDP) to the deficit in 2033. Under that scenario, interest costs would exceed combined spending on Medicaid, SSI, and SNAP as well as spending on defense by next year. By 2026, the cost of interest would reach a record high 3.3% of the economy.





