The United States public debt contracts to…
January 1835 CE
The national debt of the United States is the debt, or unpaid borrowed funds, carried by the federal government of the United States, which is measured as the face value of the currently outstanding Treasury securities that have been issued by the Treasury and other federal government agencies.
The terms national deficit and national surplus usually refer to the federal government budget balance from year to year, not the cumulative amount of debt.
A deficit year increases the debt, while a surplus year decreases the debt as more money is received than spent.