The United States operates one of the world's largest public procurement markets, spending over $700 billion at the federal level alone and more than $2 trillion when state and local governments are included. This guide covers SAM.gov, FAR compliance, SBA set-aside programs, and sector-specific strategies for winning US government contracts.
By TenderRadar Team
The United States has the world's largest public procurement market. The federal government alone spends over $700 billion annually on contracts, while state, county, and municipal governments collectively push total public spending beyond $2 trillion. Procurement is decentralised: each federal agency, state, and locality has its own contracting offices, though federal procurement follows a unified regulatory framework. The system is designed to promote competition, transparency, and value for money, with significant carve-outs for small businesses. Foreign suppliers can participate in federal procurement under WTO GPA and various free-trade agreements, although domestic preference rules such as the Buy American Act apply to many categories.
$700B+ federal, ~$2T total including state and local
Annual procurement value
Approximately 8-10% of GDP
Share of GDP
The primary portal for federal procurement. SAM.gov combines the former Federal Business Opportunities (FBO), System for Award Management (SAM registration), Federal Procurement Data System (FPDS), and several other systems into a single platform. All federal contract opportunities above $25,000 must be posted here. Suppliers must register in SAM.gov to receive federal contract awards.
Visit portalPortal for requesting quotes and proposals from GSA Schedule (MAS) contract holders. Agencies use eBuy to source commercial products and services through pre-negotiated GSA contracts.
Visit portalComprehensive database of all federal spending including contracts, grants, and loans. Useful for market research, identifying buying patterns, and understanding agency spending priorities.
Visit portalEach US state operates its own procurement portal. Examples include BidNet, California eProcure, New York State Contract Reporter, and Texas SmartBuy. Many cities and counties also maintain independent portals. Aggregators like BidNet Direct and GovWin compile opportunities across jurisdictions.
Visit portalThe Department of Defense is the single largest buyer in the US government, spending over $400 billion annually on contracts. Opportunities span weapons systems, IT, logistics, facilities maintenance, and professional services. DFARS and ITAR regulations add complexity.
Federal IT spending exceeds $100 billion per year across civilian and defence agencies. FedRAMP authorisation is essential for cloud services. Key vehicles include CIO-SP3, SEWP, and Alliant 2. Modernisation of legacy systems drives ongoing demand.
The VA, HHS, NIH, and DoD medical commands procure pharmaceuticals, medical devices, IT systems, and clinical services. The VA alone spends $30B+ on contracts. The Federal Supply Schedules for medical equipment are heavily used.
The Army Corps of Engineers, GSA, DOT, and state/local agencies invest heavily in roads, bridges, federal buildings, and water infrastructure. The Infrastructure Investment and Jobs Act has injected hundreds of billions in new funding.
The DOE, EPA, and defence agencies procure renewable energy installations, environmental remediation, and energy-efficient technologies. Federal sustainability mandates are driving demand for green products and services.
Consulting, programme management, staffing, training, and advisory services represent a significant share of federal spending. Agencies frequently use IDIQ and BPA vehicles for these services.
Not necessarily. Foreign suppliers from WTO GPA signatory countries and FTA partners can bid on covered procurements above GPA thresholds. However, the Buy American Act restricts many supply contracts to domestic end products, and certain defence and security contracts are limited to US firms. Foreign companies often establish US subsidiaries to participate more broadly.
The timeline varies significantly. Simple commercial purchases under Simplified Acquisition Procedures can be awarded in weeks. Large, complex solicitations under FAR Part 15 typically take 6-18 months from solicitation to award. Building the relationships and past performance needed to be competitive can take 1-3 years for newcomers.
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The North American Industry Classification System (NAICS) code categorises your business by industry. Federal solicitations are assigned NAICS codes that determine small business size standards and which set-aside programmes apply. Choosing the right NAICS codes in your SAM.gov registration is critical for being found by contracting officers.
Indefinite Delivery / Indefinite Quantity (IDIQ) contracts are framework agreements that establish ceiling prices and terms for future task or delivery orders. They are the most common contract vehicle for large federal IT and services procurements. Winning an IDIQ position is step one; you then compete for individual task orders issued under the contract.
If you believe a contract was awarded improperly, you can file a bid protest with the Government Accountability Office (GAO), the Court of Federal Claims, or the contracting agency itself. GAO protests must be filed within 10 days of learning the basis for protest. The process can result in corrective action or re-evaluation of proposals.