U.S. DoD Defense Spending

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Welcome to the DoD Defense Spending page on AeroWeb. We cover defense spending both by spending type (procurement, RDT&E, O&M, MILPERS and MILCON), military service, and defense program. All defense budget figures presented on this page are by Budget Authority (discretionary + mandatory). All figures are current dollars (no inflation adjustment).



FY 2018


In FY 2018 (October 1, 2017 - September 30, 2018), total DoD spending by Budget Authority (discretionary + mandatory) was $694.5 billion dollars (up $68.2B / +10.9% from the previous FY). Of this amount, $623.4 billion was Base funding + $65.2 billion for OCO + $5.8 billion in Emergency funding (Missile Defeat and Defense Enhancements). In FY 2018, $147.5 billion were provided for Procurement and $92.0 billion for RDT&E. DoD Outlays were $600.6 billion.



FY 2019


In FY 2019 (October 1, 2018 - September 30, 2019), total DoD spending by Budget Authority (discretionary + mandatory) was $712.6 billion dollars (up $18.1B / +2.6%). Of this amount, $641.1 billion was Base funding + $68.6 billion for OCO + $2.8 billion in funds for Disaster Relief/Border Security. In FY 2019, $146.8 billion were provided for Procurement and $95.5 billion for RDT&E. DoD Outlays were $654.0 billion.



FY 2020


In FY 2020 (October 1, 2019 - September 30, 2020), total DoD spending by Budget Authority (discretionary + mandatory) was $738.8 billion dollars (up $26.2B / +3.7%). Of this amount, $648.9 billion was Base funding + $71.3 billion for OCO + $18.6 billion in funds for Hurricanes Michael/Florence relief and Coronavirus relief. In FY 2020, $141.0 billion were provided for Procurement and $105.2 billion for RDT&E. DoD Outlays were $690.4 billion.



FY 2021


In FY 2021 (October 1, 2020 - September 30, 2021), by Budget Authority (discretionary + mandatory), the DoD budget is $713.9 billion dollars (down $24.9B / -3.4%). Of this amount, $645.3 billion is Base funding + $68.5 billion for OCO. In FY 2021, the DoD budget provides $141.9 billion for Procurement and $106.6 billion for RDT&E. DoD Outlays of $712.5 billion are expected.



FY 2022


In FY 2022 (October 1, 2021 - September 30, 2022), by Budget Authority (discretionary + mandatory), the DoD budget is $727.9 billion dollars (up $14.0B / +2.0%). Of this amount, $685.8 billion is Base funding + $42.1 billion for OCO (Direct War and Enduring Operations). In FY 2022, the DoD budget provides $133.9 billion for Procurement and $113.3 billion for RDT&E. DoD Outlays of $729.4 billion are expected.

DoD Spending FY2021-FY2022: Total DoD OCO O&M Procurement RDT&E MILPERS MILCON
+1.9% -38.6% -2.5% -5.6% +6.3% +3.8% +19.9%
DoD Spending FY2020-FY2021: Total DoD OCO O&M Procurement RDT&E MILPERS MILCON
-3.4% -23.8% -5.7% +0.6% +1.3% +5.4% -57.3%
DoD Budget (total) Budget Funds for OCO (war / disaster) DoD Outlays (money spent) DoD Procurement
5-Year DoD Defense Spending Overview

Total DoD Defense Spending, Base, OCO and Procurement | FY 2012 - FY 2022

DoD Defense Spending from FY 2012 to FY 2020, FY 2021 and FY 2022 - Base, OCO, Procurement and Total

Total DoD defense spending (Base + OCO) reached a then all-time high of $695.7 billion in FY 2010. From FY 2010-15, defense spending was on a declining trajectory reaching a low of $570.8 billion in FY 2015.

From FY 2016-20, defense spending increased every year reaching a non-inflation adjusted all-time high of $738.8 billion in FY 20. In FY 2021 (fiscal year that began October 1, 2020 and ended September 30, 2021), a 3.4% decrease in defense spending is expected (final figures not out yet). The budget called for total spending (discretionary + mandatory) of $713.9 billion. In FY 2022 (fiscal year started October 1, 2021), DoD spending is expected to increase to $727.9 billion (+1.9%).

In FY 2022, the Overseas Contingency Operations (OCO) - Direct War and Enduring Operations request is $42.1 billion, which is the lowest in many years. OCO is expected to fall by as much as $26.4 billion or 38.6% from $68.5 billion in FY 21. Funds for OCO have decreased considerably over the past decade mainly due to a decline in military operations overseas.

DoD spending on Procurement (Base + OCO) declined from $165.0 billion in FY 2008 to $97.8 billion in FY 2013. From FY 2014-18 procurement had a strong run and increased by more than 50% to $147.5 billion - before stabilizing in the $141-147 billion range out to FY 21. In FY 2022, we can expect procurement to decline by 5.6% to $133.9 billion.

All figures are Budget Authority (discretionary + mandatory). Source is the official FY 2022 Budget Request from the U.S. Department of Defense.

DoD Spending | Military Personnel, O&M, Procurement, RDT&E, and Military Construction (MILCON)

As illustrated, the by far largest line item in the DoD budget is Operations & Maintenance (O&M). In FY 2022, $291.4 billion are provided for O&M expenditures, up $7.0 billion (+2.5%) from FY 2021.

In FY 2022, $178.7 billion in funding for Military Personnel (MILPERS) is expected, up $6.5 billion (+3.8%) from FY 2021. In FY 2022, procurement funds amount to $133.9 billion, down $8.0 billion (-5.6%) from FY 2021.

Another significant DoD budget item is RDT&E (Research Development Test & Evaluation). In FY 2022, expected funding for RDT&E amounts to $113.3 billion, up $6.7 billion (+6.3%) from FY 2021. RDT&E expenditures have surged over the past decade and are up by more than 79% since FY 2013.

A relatively small budget item is Military Construction (MILCON). In FY 2022, expected DoD MILCON is $8.4 billion, up $1.3 billion (+17.9%) from FY 2021. In FY 2009, spending on MILCON was as high as $26.8 billion but has since declined to much lower levels.


All defense spending figures are Budget Authority (discretionary + mandatory) and include Overseas Contingency Operations (OCO) funding. Source is the official FY 2022 Budget Request from the U.S. Department of Defense.

DoD Defense Spending by Cost Type FY 2012 to FY 2022 - O&M, MILPERS, Procurement, RDT&E, MILCON

DoD Defense Spending in Detail by Military Service | FY2000 - FY2022

In the following, we focus on DoD defense spending by service and cost/expense categories. There are major differences in the way the military services spend their funds. For example, the Army is relatively "low-tech" compared to the Navy and the Air Force, due to the fact that the Army spends a higher proportion of funds on Military Personnel and O&M while spending less on Procurement and RDT&E.

The Navy and Air Force spend more money on Procurement and RDT&E than the Army, even though the latter has received more funding in total in recent years. This is explained by the Navy's and Air Force's greater demand for high technology systems (aircraft, missiles, ships etc.). At the same time, the Army relies heavily on manpower to operate. In the following, the differences in spending are highlighted and discussed.

Total DoD Spending by Service | FY2000-FY2022

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DoD Total Budget by Military Service FY 2000 to FY 2020, FY2021 and FY 2022

From FY 2003 to FY 2014, the Army received the most DoD funding followed by the Navy and the Air Force. However, in FY 15 both the Navy and Air Force surpassed the Army. In FY 2022, $212.5 billion in total funding is provided for the Air Force, up from $203.7 billion or +4.3% from FY 2021.

In FY 2022, the Navy is expected to receive $211.9 billion, up from $207.1 billion or +2.3% from FY 2021.

In FY 2022, the Army will receive $172.6 billion, down from $174.2 billion or -0.9% from FY 2021.

Clearly, while the Army experienced major budget cuts from FY 2011-15, the Navy, USAF and Defense-Wide agencies (such as MDA, DARPA, SOCOM and DISA) were much less impacted.

Figures are Budget Authority (discretionary + mandatory) and include Overseas Contingency Operations (OCO). Source: FY 2022 DoD Budget Request.

Procurement Spending by Service | FY2000-FY2022

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DoD Procurement FY 2000 to FY 2020, FY2021 and FY 2022

As shown, the Navy is expected to receive the most DoD procurement funds in FY 2022 followed by the Air Force. In FY 2022, $58.4 billion is provided for Navy procurement, down from $61.0 billion or -4.3% from FY 2021.

In FY 2022, the Air Force is expected to receive $47.2 billion, down from $48.6 billion or -2.0% from FY 2021.

In FY 2022, the Army is expected to receive $22.4 billion, down from $24.8 billion or -9.9% from FY 2021.

Clearly, the Army is procuring much fewer vehicles, helicopters, weapons, missiles and other products and parts compared to the peak in FY 2008 (FY08-FY22: -66.7%).

Figures are Budget Authority (discretionary + mandatory) and include Overseas Contingency Operations (OCO). Source: FY 2022 DoD Budget Request.

RDT&E Spending by Service | FY2000-FY2022

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DoD RDT&E FY 2000 to FY 2020, FY2021 and FY 2022

The Air Force is expected to receive by far the most RDT&E (Research Development Test & Evaluation) funds in FY 2022 followed by Defense-Wide activities (mainly MDA Ballistic Missile Defense (BMD) programs), the Navy and Army. In FY 2022, $50.5 billion has been provided for Air Force RDT&E, up from $46.7 billion in FY 2021 or +8.1%. Since FY13, Air Force RDT&E is up by a whopping 122%.

In FY 2022, the Navy is projected to receive $22.7 billion, up from $20.1 billion or +12.7% from FY 2021.

In FY 2022, the Army is projected to receive $12.8 billion, down from $13.9 billion or -7.6% from FY 2021.

Clearly, the Air Force is the most "high-tech" branch in the U.S. military.

Figures are Budget Authority (discretionary + mandatory) and include Overseas Contingency Operations (OCO). Source: FY 2022 DoD Budget Request.

O&M, Operations & Maintenance | FY2000-FY2022

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DoD O&M FY 2000 to FY 2020, FY2021 and FY 2022

As illustrated, Defense-Wide agencies are projected to receive the most O&M (Operations & Maintenance) funding in FY 2022 followed by the Navy, Army, and Air Force.

In FY 2022, the Navy is expected to receive $71.3 billion, up from $68.9 billion or +3.5% from FY 2021.

In FY 2022, $69.3 billion in O&M funds are provided for the Army, up from $68.5 billion or +1.3% from FY 2021.

In FY 2022, the Air Force is expected to receive $67.6 billion, up from $64.4 billion or +4.9% from FY 2021.

Figures are Budget Authority (discretionary + mandatory) and include Overseas Contingency Operations (OCO). Source: FY 2022 DoD Budget Request.

Military Personnel Expenses | FY2000-FY2022

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DoD MILPERS FY 2000 to FY 2020, FY2021 and FY 2022

As illustrated, the Army is expected to receive the most Military Personnel (MILPERS) funds in FY 2022 followed by the Navy, the Air Force, and Defense-Wide agencies.

In FY 2022, $66.2 billion in MILPERS funds are provided for the Army, up from $65.0 billion or +1.8% from FY 2021.

In FY 2022, the Navy is expected to receive $56.6 billion, up from $54.7 billion or +3.5% from FY 2021.

In FY 2022, the Air Force is expected to receive $44.6 billion, up from $42.6 billion or +4.6% from FY 2021.

Clearly, the Army relies heavily on manpower.

Figures are Budget Authority (discretionary + mandatory) and include Overseas Contingency Operations (OCO). Source: FY 2022 DoD Budget Request.

MILCON, Military Construction Costs | FY2000-FY2022

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DoD MILCON FY 2000 to FY 2020, FY2021 and FY 2022

As illustrated, the Navy is expected to receive the most DoD funds for MILCON (Military Construction) in FY 2022 followed by the Air Force, Defense-Wide agencies, and the Army.

In FY 2022, the Navy is projected to receive $2.6 billion, up from $2.2 billion or +17.9% from FY 2021.

In FY 2022, $2.5 billion in MILCON funds are provided for the Air Force, up from $1.3 billion or +88.8% from FY 2021.

In FY 2022, the Army is projected to receive $1.2 billion, down from $1.5 billion or -17.4% from FY 2021.

Army MILCON has been hit hard in recent years and was down a whopping 91.8% from the peak in FY 2009 until bottoming out in FY 2017.

Figures are Budget Authority (discretionary + mandatory) and include Overseas Contingency Operations (OCO). Source: FY 2022 DoD Budget Request.

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