US federal interest expense reached $1.27 trillion in the first 11 months of FY2026, up 12% YoY and now consuming 26% of government receipts.
Macro & Markets ·
US federal interest expense reached $1.27 trillion across the first eleven months of fiscal 2026, representing a $139 billion increase from the same period the prior year and marking a 12 percent year-over-year rise. The figure now accounts for approximately 26 percent of total government receipts. This constitutes the sixth consecutive annual increase in interest costs, with cumulative growth of $784 billion over six years—a 162 percent expansion from the baseline period. At the current pace, full-year interest expense is projected to exceed $1.30 trillion for the first time, with August alone recording $98 billion in interest payments, equivalent to $3.2 billion daily.
The acceleration in federal interest costs reflects the compounding effect of elevated debt levels combined with higher prevailing interest rates. As the federal government's debt stock expands and existing debt rolls over at higher coupon rates, the annual interest bill grows mechanically, even without further borrowing increases. The trend underscores a structural fiscal dynamic in which a rising share of government revenue flows toward debt servicing rather than discretionary or mandatory spending programs.
The path forward depends on whether interest rates decline materially or whether federal borrowing slows. Should rates remain elevated, interest expense will continue consuming an expanding portion of receipts, potentially constraining fiscal flexibility. The sustainability of current debt service levels and their macroeconomic implications remain subjects of ongoing policy debate.