Foreign Military Sales (FMS) Contracting Guide
Foreign Military Sales is the U.S. government's primary mechanism for selling defense articles, services, and training to allied and partner nations. FMS transactions totaled over $80 billion in FY2024, making it one of the largest channels for defense-related contracting.
Unlike Direct Commercial Sales (DCS) where a contractor sells directly to a foreign government, FMS is a government-to-government transaction where the U.S. government acts as the intermediary. Contractors deliver products and services to the U.S. government, which then transfers them to the foreign customer.
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What Is FMS and How Does It Work?
Foreign Military Sales is authorized under the Arms Export Control Act (AECA) and administered by the Defense Security Cooperation Agency (DSCA). The process begins when a foreign government expresses interest in purchasing U.S. defense articles or services. The request flows through diplomatic and military channels to the appropriate U.S. military department (Army, Navy, or Air Force), which develops a price and availability estimate.
Once the foreign government agrees to proceed, the U.S. issues a Letter of Offer and Acceptance (LOA), which is essentially a government-to-government sales agreement. The foreign government deposits funds into a trust account managed by the Defense Finance and Accounting Service (DFAS). The implementing military department then procures the required items through standard U.S. government contracting procedures.
This means that from a contractor's perspective, FMS contracts look like regular U.S. government contracts. The contractor's customer is the U.S. Department of Defense, not the foreign government. The same FAR/DFARS rules, contract types, and procurement procedures apply. The key difference is the funding source (foreign government funds rather than U.S. appropriations) and the end user (a foreign military).
The Role of DSCA
The Defense Security Cooperation Agency is the DoD agency responsible for administering the FMS program. DSCA sits within the Office of the Under Secretary of Defense for Policy and provides overall program direction, financial management, and policy guidance for all security cooperation activities.
DSCA's responsibilities include reviewing and approving LOAs, managing the FMS trust fund, providing financial reporting to foreign customers, and overseeing the implementing agencies (Army, Navy, Air Force, and other DoD components) that execute FMS cases. DSCA also coordinates with the State Department on export licensing and congressional notification requirements.
For major defense acquisitions (typically over $25 million for equipment or $100 million for services), DSCA must notify Congress before an LOA can be issued. Congressional notification triggers a 15-30 day review period during which members of Congress can raise objections. This adds time to the FMS process for large cases but does not directly involve contractors.
How Contractors Participate in FMS
Existing Production Contracts
The most common path into FMS is through existing contracts for weapons systems, equipment, or services. When a foreign government orders an item that a contractor already produces for the U.S. military, the implementing agency adds quantity to the existing production contract or issues a new delivery order. This is how most major platform sales (aircraft, vehicles, missiles) are executed.
Follow-On Support and Services
Once a foreign government acquires U.S. equipment, it needs training, maintenance, spare parts, technical data, and logistics support. These follow-on contracts can extend for decades and often exceed the original equipment cost. Contractors who supply the original equipment have a significant advantage in competing for support contracts.
Training Programs
FMS includes extensive training for foreign military personnel on the operation and maintenance of U.S. equipment. Contractors provide both in-country training (at the foreign customer location) and institutional training (at U.S. facilities). Training contracts cover curriculum development, instruction, simulation, and training device maintenance.
Systems Integration
Foreign military customers often need to integrate U.S. equipment with their existing systems, communications networks, or command-and-control infrastructure. Systems integration contracts under FMS cover engineering, testing, installation, and validation of interoperability between U.S. and foreign systems.
Competitive Procurement
Not all FMS contracts go to the original equipment manufacturer. When the implementing agency has options, it may conduct a competitive procurement using standard FAR procedures. Small and mid-size contractors can compete for FMS work in areas like support services, training, logistics, IT, and facilities maintenance.
The LOA Process
Letter of Request (LOR)
The foreign government submits a formal Letter of Request to the U.S. Security Cooperation Organization in their country, specifying the defense articles, services, or training desired.
Price and Availability (P&A)
The implementing military department develops a price and availability estimate, which includes the cost of the items, administrative surcharges, transportation, and any required support. The contractor may be asked to provide rough order of magnitude (ROM) pricing.
Congressional Notification
For cases above the notification threshold, DSCA notifies Congress and waits for the review period to expire. Congress can block a sale through a joint resolution of disapproval, though this is extremely rare.
LOA Issuance and Acceptance
DSCA issues the Letter of Offer and Acceptance (LOA) to the foreign government. The LOA specifies the items, quantities, pricing, delivery schedule, and terms. The foreign government signs the LOA and deposits initial funds.
Contract Execution
The implementing agency awards contracts to fulfill the LOA requirements using standard DoD procurement procedures. Contractors deliver articles and services to the U.S. government, which transfers them to the foreign customer.
Top FMS Customer Countries
Saudi Arabia
Largest FMS customer by total value. Major purchases include F-15 aircraft, missile defense systems, naval vessels, and extensive training and support services.
Australia
Close defense partner with major FMS cases including F-35 aircraft, MQ-9 Reaper drones, Mk 48 torpedoes, and integrated air and missile defense systems.
Japan
Key Indo-Pacific ally purchasing F-35 aircraft, Aegis combat systems, SM-3 missiles, V-22 Osprey aircraft, and extensive C4ISR capabilities.
South Korea
Significant FMS customer for F-35 aircraft, Patriot missile upgrades, Apache helicopters, and intelligence and surveillance systems.
United Kingdom
NATO ally with major FMS cases including F-35B aircraft, P-8A Poseidon maritime patrol aircraft, Apache helicopters, and missile systems.
Germany
Growing FMS customer since 2022 with major procurement of CH-47 Chinook helicopters, F-35 aircraft, and Patriot air defense systems.
Track FMS-Related Contract Opportunities
Bureauify aggregates defense contract awards and solicitations from SAM.gov and FPDS, including contracts funded through Foreign Military Sales. Search by weapon system, country, or implementing agency.
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