On Jan. 20, 2009, when Obama was inaugurated, the total debt of the federal government was $10,626,877,048,913.08, according to data published by the U.S. Treasury.
As of the close of business on Friday, Sept, 30, the last day of fiscal 2016, the total federal debt was $19,573,444,713,936.79. At that point, the total federal debt had increased under Obama by $8,946,567,665,023.71.
On Monday, Oct. 3, the first business day of fiscal 2017, the total federal debt closed at $19,642,949,742,561.51. At that point, the debt had increased under Obama by $9,016,072,693,648.43 from the $10,626,877,048,913.08 it stood at on the day of Obama’s inauguration.
As of the close of business, on Wednesday, Oct. 5—the latest day for which the Treasury has reported—the total federal debt was $19,663,411,497,797.40. That means that so far in Obama’s presidency, the federal debt has increased $9,036,534,448,884.32.