The Congressional Budget Office (CBO) released its yearly Budget and Economic Outlook report on "'baseline' budget projections spanning the next 10 years. Those projections are not a forecast of future events; rather, they are intended to provide a benchmark against which potential policy changes can be measured." The report covers 2013-2023.
From the summary on their website:
"Economic growth will remain slow this year, CBO anticipates, as gradual improvement in many of the forces that drive the economy is offset by the effects of budgetary changes that are scheduled to occur under current law. After this year, economic growth will speed up, CBO projects, causing the unemployment rate to decline and inflation and interest rates to eventually rise from their current low levels. Nevertheless, the unemployment rate is expected to remain above 7½ percent through next year; if that happens, 2014 will be the sixth consecutive year with unemployment exceeding 7½ percent of the labor force—the longest such period in the past 70 years.
If the current laws that govern federal taxes and spending do not change, the budget deficit will shrink this year to $845 billion, or 5.3 percent of gross domestic product (GDP), its smallest size since 2008. In CBO's baseline projections, deficits continue to shrink over the next few years, falling to 2.4 percent of GDP by 2015. Deficits are projected to increase later in the coming decade, however, because of the pressures of an aging population, rising health care costs, an expansion of federal subsidies for health insurance, and growing interest payments on federal debt. As a result, federal debt held by the public is projected to remain historically high relative to the size of the economy for the next decade. By 2023, if current laws remain in place, debt will equal 77 percent of GDP and be on an upward path, CBO projects (see figure below).
Such high and rising debt would have serious negative consequences: When interest rates rose to more normal levels, federal spending on interest payments would increase substantially. Moreover, because federal borrowing reduces national saving, the capital stock would be smaller and total wages would be lower than they would be if the debt was reduced. In addition, lawmakers would have less flexibility than they might ordinarily to use tax and spending policies to respond to unexpected challenges. Finally, such a large debt would increase the risk of a fiscal crisis, during which investors would lose so much confidence in the government's ability to manage its budget that the government would be unable to borrow at affordable rates."