Chronology, not a blame chart
U.S. national debt by president
Confirmed debt at the first Treasury publication on or after inauguration, compared with the last publication before departure. The dates are shown because administrative boundaries and publication days rarely align perfectly.
Source: U.S. Treasury, Debt to the Penny. Nominal dollars, not inflation-adjusted. The current term is incomplete.
Exact boundary records
Download JSON| Administration | Start record | End record | Change |
|---|---|---|---|
| Bill Clinton | 1993-04-01 $4,225,873,987,843 | 2001-01-19 $5,727,776,738,305 | +$1.50 trillion |
| George W. Bush | 2001-01-22 $5,728,195,796,182 | 2009-01-16 $10,628,881,485,510 | +$4.90 trillion |
| Barack Obama | 2009-01-20 $10,626,877,048,913 | 2017-01-19 $19,944,429,217,107 | +$9.32 trillion |
| Donald Trump (first term) | 2017-01-20 $19,947,304,555,212 | 2021-01-19 $27,752,835,868,445 | +$7.81 trillion |
| Joe Biden | 2021-01-20 $27,751,896,236,415 | 2025-01-17 $36,206,593,315,575 | +$8.45 trillion |
| Donald Trump (second term) | 2025-01-21 $36,218,258,403,326 | 2026-09-11 $40,046,178,322,793 | +$3.83 trillion |
What this comparison cannot prove
A term-to-term change describes when debt increased; it does not identify a single cause. Budgets combine laws passed years earlier, new legislation, automatic benefits, interest, wars, recessions, emergencies and changes in tax receipts. Congress and the executive share fiscal authority.
Use this table as chronology. Evaluating fiscal responsibility requires deficits, economic conditions, enacted legislation and debt relative to GDP—not only the nominal change between two dates.
Presidential debt questions
Which president added the most national debt?
In nominal dollars across the Treasury API period, the largest completed-term change shown here occurred during the Barack Obama administration. Term lengths, inflation, emergencies and inherited policy differ, so rankings require context.
Does the president set federal spending alone?
No. Congress passes appropriations and tax legislation, the president signs or vetoes bills, and economic conditions affect both receipts and spending.
Why does the table begin with Clinton?
The daily Debt to the Penny API begins April 1, 1993. We do not manufacture daily precision for earlier administrations from a different series.