The Digester

US borrows $1 trillion in five months as national debt nears $39 trillion

Mar 19th 2026

A CBO monthly review shows the US borrowed about $1 trillion since October and paid $433 billion to service debt in five months as total federal debt approaches $39 trillion, while media reports highlight costly military operations and potential supplemental defense spending.

  • The Congressional Budget Office says federal borrowing since October totals about $1 trillion and debt rose by $308 billion in February.
  • The Treasury paid roughly $433 billion to service public debt in the five-month period, leaving total debt near $38.9 trillion.
  • The CBO cites higher interest payments and increased government spending, including on defense, as major drivers of the trend.
  • Maya MacGuineas of the Committee for a Responsible Federal Budget warned the path is unsustainable and urged a 3% deficit-to-GDP target.
  • The Washington Post reported the US fired about $5.6 billion of munitions in the first two days of strikes on Iran and said a supplemental defense request of up to $50 billion may be sent to Congress.
  • Politico reported the Pentagon expects the conflict to last at least 100 days, while some lawmakers question the campaign goal and clarity.