US Agency Debt Since 1945

Agency debt (primarily debt from agencies and government-sponsored enterprises like the Federal National Mortgage Association that securitize home mortgage debt) started the immediate post World War II era at with a level of debt less than 0.5 percent of GDP and didn’t hit 1 percent of GDP till 1957.

But then agency debt began an exponential rise, with debt hitting 2 percent of GDP in 1965, blowing past 5 percent of GDP in 1973, reaching 10 percent of GDP in 1981.

Agency debt blew past 20 percent of GDP in 1988, exceeded 30 percent of GDP in 1995, and hit 40 percent of GDP in 1999, and agency debt peaked at 52 percent of GDP in 2003 at the end of the 2000-02 recession.

In the 2000s expansion agency debt declined to 46.7 percent of GDP by 2006, but then blew off in the Crash of 2008, peaking at 56.1 percent of GDP in the Great Recession year of 2009.

After the Crash of 2008 agency debt decreased rapidly to 46.6 percent of GDP by 2012 and then began a more gradual decline to 45.5 percent of GDP by 2014.

In response to the COVID crisis of 2020 agency debt increased to 48 percent of GDP in 2020.

On March 27, 2025 the Congressional Budget Office released its annual Long Term Budget Outlook for 2025, which projects federal spending and revenue out to 2055.  As before, the data for the CBO study shows that federal health-care programs and interest costs will eat the budget, with federal spending exceeding 25 percent GDP by the 2040s while federal revenue stays a little over 19 percent GDP.

UsGovernmentspending.com has updated its chart of the CBO Long Term Budget Outlook here.  You can download the data and also view CBO Long Term Budget Outlooks going back to 1999.