The U.S. national debt is the total amount of money that the federal government owes to its creditors. As of June 2025, it amounted to over 36 trillion dollars. This debt increases when the government spends more than it collects in taxes and other revenues, and it is managed by the U.S. Treasury through the issuance of securities. The national debt has significant implications for the U.S. economy, potentially affecting interest rates, economic growth, and future generations.