The Federal Acquisition Regulation is the single set of rules that governs how federal agencies buy goods and services. It spans 53 parts and more than 2,000 pages. Nobody reads all of it. You don't need to.
What you do need is a working map of the parts that touch your contracts directly, the ones that determine whether you get paid, whether you stay compliant, and whether you're disqualified before the evaluation even starts. Year one in federal contracting has a steep learning curve. This guide flattens it.
What the FAR actually is
The FAR is published in Title 48 of the Code of Federal Regulations. It's jointly issued by the Department of Defense, the General Services Administration, and NASA, and it applies to virtually all federal acquisitions above the micro-purchase threshold of $10,000. Individual agencies layer their own supplements on top: the DFARS for Defense, the GSAM for GSA, and so on. When an agency rule conflicts with the FAR, agency rules generally control, but the FAR sets the floor.
You can read the full text at acquisition.gov. The eCFR (ecfr.gov) is searchable and updated more frequently.
Part 1 and Part 2: the foundation
Part 1 covers the FAR system itself — how it's structured, who has authority to deviate from it, and the guiding principle that acquisition should deliver best value to the government. Part 2 is the definitions section. When a contract clause uses a term you don't recognize, Part 2 is the first place to check.
These aren't reading material so much as reference tools. Bookmark them.
Part 9: contractor responsibility
Before an agency can award you a contract, a contracting officer must make an affirmative responsibility determination. That means you must be financially capable, have adequate resources, have a satisfactory performance record, and have a satisfactory record of integrity and business ethics.
Part 9.104 lists the specific standards. The determination is somewhat subjective. A CO can ask for financial statements, bank references, or a list of past contracts. If you've had contract terminations for default, civil fraud judgments, or debarment actions, those will surface here.
Part 9 also covers the System for Award Management (SAM.gov) registration requirement. You cannot receive a contract award without an active SAM registration. Renewals are annual. Missing the renewal date has cost contractors awards. Set a calendar reminder 60 days before your registration expires.
Part 9 Subpart 9.4 covers debarment and suspension. If you or a key executive is debarred, you're ineligible for most federal contracts. The excluded parties list is public at SAM.gov. Check your own record before you pursue any opportunity.
Part 13: simplified acquisition procedures
Purchases between $10,001 and $250,000 generally fall under simplified acquisition procedures. The rules are less formal: agencies can buy from a single source more easily, documentation requirements are lighter, and protests have a narrower scope. The $250,000 threshold is called the simplified acquisition threshold (SAT).
For small businesses, this range is where many first contracts land. GSA schedules, open market purchases, and small business set-asides under the SAT move fast compared to full negotiated acquisitions.
Part 15: negotiated acquisitions (proposals)
Part 15 governs the most common acquisition type you'll encounter for larger contracts: the Request for Proposals (RFP) process. It covers how agencies evaluate proposals, what source selection criteria are permissible, and the rules around discussions and final proposal revisions.
The most practical sections are 15.201 through 15.209, which describe industry days, pre-solicitation notices, and the structure of solicitations. Read 15.305 on proposal evaluation criteria. Agencies are required to state their evaluation factors in the solicitation, and those factors bind the selection decision. If a solicitation says technical approach is more important than price, that's enforceable.
Part 15.306 covers the rules for discussions with offerors. If an agency opens discussions with one offeror, it must open discussions with all offerors in the competitive range. This matters if you're preparing a final proposal revision and suspect you weren't included in discussions.
Part 19: small business programs
This is the part that makes federal contracting viable for small businesses. Part 19 implements the Small Business Act and covers set-asides, 8(a), HUBZone, WOSB, SDVOSB, and small business subcontracting requirements.
The key threshold: if a contract has an estimated value above $10,000 and is suitable for small business performance, the contracting officer must set it aside for small businesses exclusively. The rule kicks in when at least two small businesses are expected to submit offers at a fair market price. In practice this means most contracts under $250,000 are automatically set aside.
For 8(a), HUBZone, WOSB, and SDVOSB set-asides, the rules in Part 19 specify when sole-source awards are permissible. The sole-source threshold for 8(a) was $4.5 million for manufacturing and $4.5 million for services as of 2024 — check the current regulation for any adjustments.
Part 19.702 covers subcontracting plans. Any contract above $750,000 with a large business prime (above $1.5 million for construction) must include a small business subcontracting plan. If you're pursuing subcontracting opportunities with large primes, this is the section that creates the obligation they're responding to.
Part 22: labor standards
Part 22 incorporates the major federal labor laws into contract performance requirements. The three you'll encounter most often:
Service Contract Labor Standards (formerly the Service Contract Act): Applies to most service contracts above $2,500. Requires paying wage rates and fringe benefits at least equal to those prevailing in the locality, as determined by Department of Labor wage determinations. Wage determinations are published on sam.gov and get incorporated into your contract. Underpaying workers is a compliance violation with serious consequences.
Davis-Bacon Act (Part 22.4): Applies to construction contracts above $2,000. Requires paying prevailing wages to laborers and mechanics. If your work touches a federal building or federally assisted construction, check whether Davis-Bacon applies.
Equal Employment Opportunity (Part 22.8): Contracts above $10,000 must comply with EO 11246, which prohibits discrimination in employment. Contracts above $50,000 with 50 or more employees trigger an affirmative action plan requirement.
Part 31: cost principles (cost-type contracts only)
If you're pursuing cost-plus contracts with DoD, civilian agencies, or research organizations, Part 31 defines allowable and unallowable costs. Entertainment, lobbying, and certain legal costs are explicitly unallowable. Interest on borrowed capital is unallowable except in narrow circumstances.
Many small contractors skip Part 31 because they're doing fixed-price work. That's fine until they win their first cost-type contract and discover the audit implications. Know Part 31 exists before you need it.
Part 52: contract clauses
Part 52 is the clause library. Every numbered provision in your contract traces back to Part 52. The clause numbering system is logical: FAR 52.219-8 is the clause about utilization of small business concerns, which maps to Part 19.
When you receive a contract, you'll see a list of incorporated clauses. Some are full text, some are incorporated by reference. Either way they apply. The two clauses every small contractor should understand by heart:
52.219-8 (Utilization of Small Business Concerns): If you're a prime on a contract above the SAT, you must give maximum practical opportunity to small business subcontractors. This isn't vague: it's an enforceable obligation.
52.232-25 (Prompt Payment): The government must pay you within 30 days of a proper invoice, or it owes you interest. Understand what makes an invoice "proper" — the clause defines it. Improper invoices reset the clock.
Where to look things up
- acquisition.gov: The authoritative source. FAR text, with links to agency supplements.
- eCFR.gov: Searchable, with effective-date history. Better for finding specific clauses fast.
- SAM.gov: Registration, wage determinations, excluded parties, contract award data.
- acquisition.gov/far: Direct link to the FAR table of contents.
- DCAA audit guidelines (dcaa.mil): Relevant if you're pursuing cost-type contracts with DoD.
Three things to do now
- Confirm your SAM.gov registration is active and note the expiration date. Set a 60-day advance reminder. An expired registration can prevent award of a contract you've already won.
- Pull the solicitation for any active pursuit and locate the Part 52 clause list. Find 52.219-8 if it's a small business set-aside. Find the wage determination if it's a service contract. Read what you're agreeing to before you sign.
- Bookmark Part 19.502-2 (the mandatory set-aside rule) and Part 9.104 (responsibility standards). These two sections explain more about how you get — and keep — federal business than anything else in the regulation.
The FAR is not designed to be read cover to cover. It's a reference system. The contractors who succeed in year one aren't the ones who memorized it. They're the ones who know which parts to consult before signing.
