For 2009, the base budget rose to US$515.4 billion, with a total of US$651.2 billion when emergency discretionary spending and supplemental spending are included. This does not include many military-related items that are outside of the Defense Department budget, such as nuclear weapons research, maintenance and production (~$9.3 billion, which is in the Department of Energy budget), Veterans Affairs (~$33.2 billion) or the wars in Iraq and Afghanistan (which are largely funded through extra-budgetary supplements, ~$170 billion in 2007). Conversely, the military budget does allocate money for dual-use items, such as the development of infrastructure surrounding U.S. military bases.
|Components||Funding||Change From FY08|
|Operations and maintenance||$179.8 Bil.||+9.5%|
|Military Personnel||$125.2 Bil.||+7.5%|
|Research, Development, Testing & Evaluation||$79.6 Bil.||+4.1%|
|Military Construction||$21.2 Bil.||+19.1%|
|Family Housing||$3.2 Bil.||+10.3%|
|Resolving and Management Funds||$2.2 Bil.||-18.5%|
|Total Base Spending||$515.4 Bil.||+5.7%|
Not included in the DoD budget is $23.4 billion to be spent by the Department of Energy to develop and maintain nuclear warheads.
|Service||2007 Budget request||Percentage of Total|
|Navy/Marine Corps||$127.1 Bil.||28.8%|
|Air Force||$130.2 Bil.||29.5%|
|Defense Wide||$73.4 Bil.||16.6%|
|Program||2008 Budget request||Change, 2007 to 2008|
|Missile Defense||$8.8 Bil.||-6.2%|
|F-35 Joint Strike Fighter||$6.1 Bil.||+23.0%|
|F-22 Raptor||$4.6 Bil.||+15.0%|
|Future Combat System||$3.7 Bil.||+8.1%|
|DDG 1000 Destroyer||$3.5 Bil.||+2.7%|
|Carrier Replacement Program||$3.1 Bil.||+117.7%|
|F/A-18E/F Hornet||$2.6 Bil.||-13.5%|
|Virginia class submarine||$2.7 Bil.||-1.1%|
|V-22 Osprey||$2.6 Bil.||+23.9%|
|Chemical Demilitarization||$1.5 Bil.||+16.6%|
|San Antonio class amphibious transport dock||$1.4 Bil.||+263.5%|
|Littoral combat ship||$1.2 Bil.||+30.4%|
|Evolved Expendable Launch Vehicle||$1.2 Bil.||+33.8%|
|Space-Based Infrared System||$1.1 Bil.||+59.9%|
|EA-18G Growler||$1.6 Bil.||+56.4%|
The 2005 U.S. military budget is almost as much as the rest of the world's defense spending combined and is over eight times larger than the official military budget of China. (Note that this comparison is done in nominal value US dollars and thus is not adjusted for purchasing power parity.) The United States and its close allies are responsible for about two-thirds of the world's military spending (of which, in turn, the U.S. is responsible for the majority).
Military discretionary spending accounts for more than half of the U.S. federal discretionary spending, which is all of the U.S. federal government budget that is not appropriated for mandatory spending.
In 2003, the United States spent about 47% of the world's total military spending of US$910.6 billion, according to the Stockholm International Peace Research Institute.
The United States spends 3.7% of its GDP on its military, less than China's 11%, more than France's 2.6% and less than Saudi Arabia's 10%. This is historically low for the United States since it peaked in 1944 at 37.8% of GDP (it reached the lowest point of 3.0% in 1999-2001). Even during the peak of the Vietnam War the percentage reached a high of 9.4% in 1968.
Because the U.S. GDP has risen over time, the military budget can rise in absolute terms while shrinking as a percentage of the GDP. For example, according to the Center for Defense Information, the US outlays for defense as a percentage of federal discretionary spending, has from Fiscal Year 2003 consumed more than half (50.5%) of all such funding and has risen steadily. Discretionary spending accounts for approximately 1/3 of all federal outlays. Therefore, comparing nominal dollar values of military spending over the course of decades fails to account for the impact of inflationary forces, for which military spending as a percentage of GDP does account.
The recent invasions of Iraq and Afghanistan are largely funded through supplementary spending bills outside the Federal Budget, so they are not included in the military budget figures listed above. In addition, the United States has black budget military spending which is not listed as Federal spending and is not included in published military spending figures. Other military-related items, like maintenance of the nuclear arsenal and the money spent by the Veterans Affairs Department, are not included in the official budget. Thus, the total amount spent by the United States on military spending is higher.