How Government Contracts Work: Procurement, Bidding, and Public Accountability
Every time a public agency hires a contractor to build a road, develop software, or supply medical equipment, it follows a procurement process designed to ensure fair competition and protect taxpayer money. That process — governed by detailed rules at every level of government — is more structured than most private-sector purchasing, and for good reason: the money belongs to the public.
Published June 30, 2026What exactly is government procurement?
Government procurement is the formal process by which public agencies acquire goods, services, and construction from private vendors. At the federal level, the process is governed primarily by the Federal Acquisition Regulation (FAR), a detailed rulebook that applies to most executive branch agencies and runs to thousands of pages. State and local governments operate under their own procurement codes, which vary considerably but are built around the same core principles: open competition, transparency, and accountability for how public funds are spent.
The scale of government contracting is substantial. The U.S. federal government alone spends roughly $700 billion per year on contracts, making it the single largest buyer of goods and services in the world. Purchases range from paper clips and janitorial services to aircraft carriers and next-generation satellite systems. Even at the city or county level, contracting can represent a major share of the annual operating budget, covering everything from trash collection to public defender services.
How does the government signal that it wants to buy something?
Agencies use formal solicitation documents to notify the marketplace that they intend to make a purchase and to invite vendors to compete. Two solicitation types dominate federal contracting.
A Request for Proposals (RFP) is used when the government has a defined need but is open to different approaches for meeting it. Vendors submit detailed proposals describing their technical approach, management plan, past performance, and pricing. The agency evaluates proposals against multiple weighted factors and awards the contract to the offer representing the best overall value — not necessarily the lowest price.
An Invitation for Bids (IFB), also called sealed bidding, is used when requirements are precisely defined and price is the only meaningful differentiator. Bids are submitted sealed by a published deadline, opened publicly, and evaluated solely on price. The contract goes to the lowest “responsive and responsible” bidder — one whose bid meets the stated requirements and who has the demonstrated capacity to perform. There is no negotiation after bids open.
Federal solicitations above the simplified acquisition threshold (currently $250,000) must be posted on SAM.gov, the government’s central contracting website, ensuring that all eligible businesses have equal notice and access to competing.
Who is allowed to bid on government contracts?
Any business that is “responsible” in the regulatory sense — meaning it has the financial capacity, technical capability, and integrity to perform the work — may submit a bid or proposal. To contract with the federal government, a vendor must first register in SAM.gov and obtain a Unique Entity Identifier (UEI).
Some contracts are set aside exclusively for specific categories of vendors. The Small Business Administration (SBA) administers programs that reserve a portion of federal contracting dollars for small businesses, women-owned small businesses, veteran-owned businesses, service-disabled veteran-owned businesses, and firms located in Historically Underutilized Business Zones (HUBZones). These set-asides are intended to ensure that businesses without the scale to compete against large defense or IT contractors can access government work.
For routine commodity purchases, agencies may use GSA Schedules — pre-negotiated contracts administered by the General Services Administration that list thousands of approved vendors and established pricing. An agency buying laptops or office furniture can order directly from a GSA Schedule vendor without launching a new competition, as the competitive process already occurred when the vendor was placed on the schedule.
How is a contract actually awarded?
The contracting officer (CO) — a federal employee with a specific warrant granting legal authority to bind the government — makes the award decision. For competitive negotiations under an RFP, the CO documents a source selection decision explaining in detail why the chosen offer represents the best value when evaluated against the published criteria. This document becomes part of the contract file and is subject to review if a losing bidder challenges the award.
Contract awards above certain dollar thresholds are reported to the Federal Procurement Data System (FPDS), a publicly searchable database that tracks spending by agency, contractor, contract type, place of performance, and product or service category. USASpending.gov presents this data in a format accessible to non-specialists, allowing journalists, researchers, and members of the public to examine how procurement dollars flow.
What oversight exists to prevent waste or corruption?
Contract oversight operates at several levels simultaneously. The contracting officer’s representative (COR) monitors day-to-day contractor performance and certifies that invoiced work has been completed before payment is authorized. Each major federal agency has an Inspector General (IG) whose office independently audits contracts, investigates fraud allegations, and issues public reports on findings. The Government Accountability Office (GAO) conducts broad programmatic reviews of procurement practices across agencies and reports its findings to Congress.
The False Claims Act provides a powerful enforcement mechanism at the civil level: private citizens with inside knowledge of contractor fraud can file suit on the government’s behalf and receive a portion of any recovery. This “qui tam” provision has generated billions of dollars in settlements and judgments against contractors who overbilled, delivered substandard goods, or falsified test results.
What can a losing bidder do if it believes the award was improper?
Vendors who believe a procurement was conducted improperly — that the solicitation was ambiguous, that proposals were evaluated inconsistently, or that the award criteria were misapplied — can file a bid protest. Protests may be filed with the contracting agency itself, with the GAO, or with the U.S. Court of Federal Claims, depending on the nature of the dispute and the remedy sought.
The GAO resolves most protests within 100 calendar days and has the authority to recommend corrective action when it finds a legal error: reissuing the solicitation, re-evaluating proposals, or terminating an improper award. While GAO recommendations are not legally binding, agencies comply with them at a high rate — failure to comply would require the agency to notify Congress. The protest system functions as a structural check on contracting officer discretion and a mechanism for enforcing procurement rules, even when the government would prefer to move forward with an award it has already made.