The United States crossed a threshold in August 2026 that would have seemed almost science fiction a generation ago: total public debt surpassed $40 trillion. The number landed at roughly $40.047 trillion on August 18, and it now exceeds the size of the entire national economy, which stood at approximately $31.9 trillion in June 2026.
To put the pace of accumulation in context, that debt load has more than doubled in just a decade.
When interest beats defense
For the first time in American history, annual interest payments on the national debt have cleared $1 trillion. That figure now outpaces what the federal government spends on national defense, making debt service the second-largest item in the federal budget, trailing only Social Security.
Through July of fiscal year 2026, net interest costs reached $963 billion, up 14% from the same period the prior year. The 30-year Treasury yield was sitting around 5.34%, meaning new borrowing comes at a steep price and existing variable-cost obligations reprice higher alongside it.
