Background bands mark who was president. They are not an attribution of cause. Presidents do not solely control these metrics. Monthly points use the president in office on the first day of the month. Calendar year points use the president in office on July 1. Fiscal year points use the president in office on October 1, the first day of that fiscal year. A fiscal year runs through the following September 30 and can include two presidents.

Interest Expense on the Debt Outstanding

Units: Dollars, nominal. Nominal. not applicable.

Sum of month_expense_amt across every line on that record date. Lines are the published components. No total line is published in the file.

Source: U.S. Department of the Treasury, Bureau of the Fiscal Service, Interest Expense on the Debt Outstanding. Retrieved 2026-10-19. Series: fiscaldata.treasury.gov/datasets/interest-expense-debt-outstanding/interest-expense-on-the-debt-outstanding