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How the US government actually buys: FAR, agencies, and a $750B market

WinAContract Team · Jun 05, 2026 · 9 min read

Federal procurement looks chaotic from the outside — thousands of notices, dozens of agencies, impenetrable acronyms. Underneath, it is one of the most rule-bound markets on earth. Understand the structure once and every solicitation you read afterwards makes more sense.

$755B

FY2024 federal contract obligations

~60%

Of contract dollars flow through the Department of Defense

28.8%

Went to small business in FY2024 (goal: 23%)

The rulebook: FAR and its supplements

Nearly every executive-branch purchase runs on the Federal Acquisition Regulation (FAR) — a single, public rulebook covering how requirements are defined, competed, evaluated, and awarded. Agencies bolt on supplements (DoD’s DFARS is the big one) that add rules but cannot contradict the FAR. When a contracting officer cites “FAR Part 15”, that is negotiated procurement; “Part 12” is commercial buying; “Part 19” is small business programs. A government-wide effort to rewrite and simplify the FAR has been underway since 2025 — expect language to keep shifting, but the architecture to remain.

Who actually holds the pen

Contracting officers (COs/KOs) are the only people who can legally obligate the government. Everything routes through them.
Program offices own the requirement and the budget — they are the “customer” your solution must convince.
CORs (contracting officer’s representatives) manage performance after award.
Small business specialists and agency OSDBUs advocate for set-asides and can point you at the right buyers.

Where the money is

DoD components (Army, Navy, Air Force, and the Defense Logistics Agency) dominate by volume, followed by civilian heavyweights: Veterans Affairs, Health and Human Services, Energy, Homeland Security, NASA, and GSA. Each buys differently — DLA posts thousands of small, fast-turn part buys; VA leans heavily on veteran-owned set-asides; GSA increasingly buys common goods and services for the whole government.

Where federal contract dollars go (FY2024)

Department of Defense~60%

Civilian agencies (VA, HHS, DOE, DHS, NASA, GSA…)~40%

DoD accounts for roughly 60% of contract obligations; the rest spreads across civilian agencies. Figures approximate. Source: GAO / USAspending, FY2024.

💡 Use the structure

Pick two or three target agencies and learn their patterns — their fiscal calendar, their favorite vehicles, their small business office. Depth beats spraying bids across the whole market.

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