The US Federal Debt (also referred to as The Public Debt or The Government Debt) is the amount owed by the federal government of the United States at any time in the past and not yet repaid. America has the largest debt burden in the world, which is estimated to be $18,472 billion by the end of 2015.
Generally, there are two components of gross federal debt: debt held by the public and debt held by government accounts. In 2007 the share of US federal debt held by the public was 56% only, whereas in 2014 this component constituted approximately 72% of the total debt burden.
According to the latest forecasts, US Federal Debt is going to reach $27 trillion by 2025, with the proportion of debt held by the public constituting 78,7% of 2025 US GDP!