U.S. federal government spending by category - 2010

According to the budget for fiscal year 2010 (which runs from October 1, 2009 to September 30, 2010), U.S. federal government expenditures will be $3.55 trillion and can be divided into the following categories:Click on the image to enlarge it.

U.S. federal government spending: 2000

Click one of the sources below for a larger version of this chart.
Source:
http://www.nigelholmes.com/work/flash/chart2.htm
http://www.nigelholmes.com/work/flash/tedx.swf

2009 U.S. Federal Budget - by category of spending

Click on the image above to enlarge it.

The Budget of the United States Government provides a breakdown of federal government spending by category.

The President's budget for 2009 totals $3.1 trillion. Percentages in parentheses indicate percentage change compared to 2008. This budget request is broken down by the following expenditures:

Mandatory spending: $1.89 trillion (+6.2%)
$644 billion - Social Security
$408 billion - Medicare
$224 billion - Medicaid and the State Children's Health Insurance Program (SCHIP)
$360 billion - Unemployment/Welfare/Other mandatory spending
$260 billion - Interest on National Debt

Discretionary spending: $1.21 trillion (+4.9%)
$515.4 billion - United States Department of Defense
$145.2 billion(2008*) - Global War on Terror
$70.4 billion - United States Department of Health and Human Services
$45.4 billion - United States Department of Education
$44.8 billion - United States Department of Veterans Affairs
$38.5 billion - United States Department of Housing and Urban Development
$38.3 billion - State and Other International Programs
$37.6 billion - United States Department of Homeland Security
$25.0 billion - United States Department of Energy
$20.8 billion - United States Department of Agriculture
$20.3 billion - United States Department of Justice
$17.6 billion - National Aeronautics and Space Administration
$12.5 billion - United States Department of the Treasury
$11.5 billion - United States Department of Transportation
$10.6 billion - United States Department of the Interior
$10.5 billion - United States Department of Labor
$8.4 billion - Social Security Administration
$7.1 billion - United States Environmental Protection Agency
$6.9 billion - National Science Foundation
$6.3 billion - Judicial branch (United States federal courts)
$4.7 billion - Legislative branch (United States Congress)
$4.7 billion - United States Army Corps of Engineers
$0.4 billion - Executive Office of the President
$0.7 billion - Small Business Administration
$7.2 billion - Other agencies
$39.0 billion(2008*) - Other Off-budget Discretionary Spending

The financial cost of the Iraq War and the War in Afghanistan are not part of the defense budget; they are appropriations.

SIX CATEGORIES OF SPENDING COMPRISE MORE THAN 75% OF THE U.S. FEDERAL BUDGET:

$644 billion - Social Security
$408 billion - Medicare
$224 billion - Medicaid and the State Children's Health Insurance Program (SCHIP)
$360 billion - Unemployment/Welfare/Other mandatory spending
$260 billion - Interest on National Debt
$515.4 billion - United States Department of Defense

SERIOUS DISCUSSIONS ABOUT REDUCING THE SIZE AND SCOPE OF FEDERAL GOVERNMENT SPENDING MUST ADDRESS THESE CATEGORIES.