Markets & Economy U.S. Federal Interest Costs Reach $1.25 Trillion as Debt Burden Rises September 6, 2026 · 7:20 pm 1 sources Image: Yahoo Finance ad slot · in-content video 16:9 Coverage More coverageThe U.S. National Debt Just Surpassed $40 Trillion. Here's What This Means for Your Portfolio in 2026 and Beyond.Yahoo Finance · September 6, 2026 19:20