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 · series starts 1 April 1993 | 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 | 2026-11-09 $40,559,796,589,243 | +$4.34 trillion |
Earlier presidents: fiscal-year view
Before 1993 the Treasury series is annual, so these rows use the last fiscal-year total on or before each inauguration and departure. Boundaries can be off by up to a year, so read them as broad orders of magnitude, not exact term totals.
| President | Start (record) | End (record) | Change |
|---|---|---|---|
| Harry S. Truman | $201 billion 30 June 1944 | $259 billion 30 June 1952 | +$58.1 billion +28.9% |
| Dwight D. Eisenhower | $259 billion 30 June 1952 | $286 billion 30 June 1960 | +$27.2 billion +10.5% |
| John F. Kennedy | $286 billion 30 June 1960 | $306 billion 30 June 1963 | +$19.5 billion +6.8% |
| Lyndon B. Johnson | $306 billion 30 June 1963 | $348 billion 30 June 1968 | +$41.7 billion +13.6% |
| Richard Nixon | $348 billion 30 June 1968 | $475 billion 30 June 1974 | +$127 billion +36.7% |
| Gerald Ford | $475 billion 30 June 1974 | $620 billion 30 June 1976 | +$145 billion +30.6% |
| Jimmy Carter | $620 billion 30 June 1976 | $908 billion 30 September 1980 | +$287 billion +46.3% |
| Ronald Reagan | $908 billion 30 September 1980 | $2.60 trillion 30 September 1988 | +$1.69 trillion +186.7% |
| George H. W. Bush | $2.60 trillion 30 September 1988 | $4.06 trillion 30 September 1992 | +$1.46 trillion +56.2% |
Source: U.S. Treasury, Historical Debt Outstanding. Nominal dollars. Fiscal years ended 30 June until 1976 and 30 September from 1977.
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 daily comparison begin with Clinton?
The daily Debt to the Penny series begins April 1, 1993, so the Clinton row starts there rather than on his January 1993 inauguration. Earlier administrations appear in a separate table built from fiscal-year totals, which is coarser and labelled as such.
Which president added the most debt per year?
Measured as nominal dollars added per year in office, the highest completed-term figure shown here is Joe Biden, at about $2.12 trillion per year. Inflation, economic growth and emergencies make nominal comparisons across decades misleading on their own.