U.S. interest burden hits record share of revenue as debt surpasses $40 trillion
Federal net interest payments now consume 18.5% of tax revenue, surpassing the previous record set in 1991. The annual interest cost is $1.25 trillion, exceeding the entire defense budget. Analysts warn that the current situation is riskier than three decades ago because debt held by the public exceeds 100% of GDP.
The 1991 record occurred when public debt equaled roughly 44% of GDP, whereas today it exceeds 100%, making the current burden structurally more fragile even though long-term bond yields are lower. This shift means the government's sensitivity to interest rates has grown dramatically.
Massive corporate bond issuance from AI firms, totaling $225 billion in early 2026, has diverted capital away from Treasuries, pushing yields upward. To counter this, Treasury Secretary Bessent expanded the scale of long-dated bond buybacks to at least $4 billion per operation, an unusual step highlighting mounting pressure on debt management.
Rising interest costs could squeeze discretionary federal spending on infrastructure, education, and social programs, potentially shifting the burden onto taxpayers or future generations. Higher Treasury yields may also raise borrowing costs for households and businesses, slowing economic growth. The crowding-out effect from corporate debt could further strain public finances, making fiscal adjustments more difficult.