View the ratio of federal debt to the economic output of the U.S., which can indicate economic health and the sustainability of government borrowing.

Federal Debt Held by the Public as Percent of Gross Domestic Product (FYGFGDQ188S) (https://fred.stlouisfed.org/series/FYGFGDQ188S) was first constructed by the Federal Reserve Bank of St. Louis in October 2012. It is calculated using Federal Debt Held by the Public (FYGFDPUN) (https://fred.stlouisfed.org/series/FYGFDPUN) and Gross Domestic Product, 1 Decimal (GDP) (https://fred.stlouisfed.org/series/GDP): FYGFGDQ188S = ((FYGFDPUN/1000)/GDP)*100 FYGFDPUN/1000 transforms FYGFDPUN from millions of dollars to billions of dollars.

Federal Debt Held by Foreign & International Investors as Percent of Gross Domestic Product (HBFIGDQ188S) (https://fred.stlouisfed.org/series/HBFIGDQ188S) was first constructed by the Federal Reserve Bank of St. Louis in October 2012. It is calculated using Federal Debt Held by Foreign & International Investors (FDHBFIN) (https://fred.stlouisfed.org/series/FDHBFIN) and Gross Domestic Product, 1 Decimal (GDP) (https://fred.stlouisfed.org/series/GDP): (FDHBFIN/GDP)*100

Federal Debt Held by Federal Reserve Banks as Percent of Gross Domestic Product (HBFRGDQ188S) (https://fred.stlouisfed.org/series/HBFRGDQ188S) was first constructed by the Federal Reserve Bank of St. Louis in October 2012. It is calculated using Federal Debt Held by Federal Reserve Banks (FDHBFRBN) (https://fred.stlouisfed.org/series/FDHBFRBN) and Gross Domestic Product, 1 Decimal (GDP) (https://fred.stlouisfed.org/series/GDP): HBFRGDQ188S = (FDHBFRBN/GDP)*100

Federal Debt Held by Private Investors as Percent of Gross Domestic Product (HBPIGDQ188S) (https://fred.stlouisfed.org/series/HBPIGDQ188S) was first constructed by the Federal Reserve Bank of St. Louis in October 2012. It is calculated using Federal Debt Held by Private Investors (FDHBPIN) (https://fred.stlouisfed.org/series/FDHBPIN) and Gross Domestic Product, 1 Decimal (GDP) (https://fred.stlouisfed.org/series/GDP): HBPIGDQ188S = (FDHBPIN/GDP)*100

Federal Debt Held by Agencies & Trusts as Percent of Gross Domestic Product (HBATGDQ188S) (https://fred.stlouisfed.org/series/HBATGDQ188S) was first constructed by the Federal Reserve Bank of St. Louis in October 2012. It is calculated using Federal Debt Held by Agencies & Trusts (FDHBATN) (https://fred.stlouisfed.org/series/FDHBATN) and Gross Domestic Product, 1 Decimal (GDP) (https://fred.stlouisfed.org/series/GDP): HBATGDQ188S = ((FDHBATN/1000)/GDP)*100 FDHBATN/1000 transforms FDHBATN from millions of dollars to billions of dollars.

Source ID: FA316402101.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FA316402101&t=) provided by the source.

Source: Federal Reserve Bank Of St. Louis, Review Of June 1967, And Federal Budget Trends, August 14, 1968 And Subsequent Quarterly Issues. This NBER data series q15018 appears on the NBER website in Chapter 15 at http://www.nber.org/databases/macrohistory/contents/chapter15.html. NBER Indicator: q15018

Source: U.S. Bureau Of The Census, Business Cycle Developments, October 1967 And March 1968 This NBER data series q15034 appears on the NBER website in Chapter 15 at http://www.nber.org/databases/macrohistory/contents/chapter15.html. NBER Indicator: q15034

Source: U.S. Department Of Commerce, Survey Of Current Business, August 1965 And Following Monthly Issues This NBER data series q15035 appears on the NBER website in Chapter 15 at http://www.nber.org/databases/macrohistory/contents/chapter15.html. NBER Indicator: q15035

BEA Account Code: B097RC For more information about this series, please see http://www.bea.gov/national/.

Source ID: FA313161705.Q For more information about the Flow of Funds tables, see the Financial Accounts Guide (https://www.federalreserve.gov/apps/fof/Default.aspx). With each quarterly release, the source may make major data and structural revisions to the series and tables. These changes are available in the Release Highlights (https://www.federalreserve.gov/apps/fof/FOFHighlight.aspx). In the Financial Accounts, the source identifies each series by a string of patterned letters and numbers. For a detailed description, including how this series is constructed, see the series analyzer (https://www.federalreserve.gov/apps/fof/SeriesAnalyzer.aspx?s=FA313161705&t=) provided by the source.