US public debt interest hits record $1.3T, may surpass Social Security

The interest expense on the United States’ public debt has reached $1.37 trillion over the past year, setting another record high. This development comes amid rising costs associated with servicing the nation’s outstanding Treasury securities. If the current pace continues, interest payments could soon surpass Social Security as the largest item in the federal budget. The rising interest costs are occurring in a context where recent fiscal data show a 10.5% year-over-year increase in interest payments, accompanied by an average marketable-debt interest rate of 3.411% as of June 2026. The market’s response suggests potential pressure on the Federal Reserve to adjust its rate policy in upcoming meetings. Key Takeaways Market pricing suggests rising interest expense may indicate pressure on the Federal Reserve to maintain or increase rates. Pricing appears consistent with scenarios where interest costs could surpass Social Security in the federal budget if current trends continue. The development may influence market expectations regarding the Federal Reserve’s future policy decisions. What to Watch Observers will closely monitor the Federal Reserve’s upcoming meetings in June, July, ...