This visualization was created using the Monthly Statement of the Public Debt (MSPD) as the data source for federal debt of the United States. Gross domestic product (GDP) figures come from the Bureau of Economic Analysis (BEA). GDP data is current as of October 2020, and is an average of all the fiscal year to date GDP estimates calculated by the Bureau of Economic Analysis. For more information about how GDP is calculated, visit the Bureau of Economic Analysis' National Income and Product Account Handbook. Throughout this page, we use the gross domestic product for the Fiscal Year, not the Calendar Year, in order to facilitate an appropriate comparison.