The Federal Acquisition Regulation (FAR) Explained: What Every Contractor Must Know

If you are selling to the federal government, you must understand the FAR. Not every word of it (the regulation spans over 2,000 pages) but the parts that directly affect your business.

This guide breaks down the FAR into practical, digestible sections. You will learn what the FAR is, how it is structured, which parts matter most, and how to use it to your advantage.

What Is the Federal Acquisition Regulation?

The Federal Acquisition Regulation (FAR) is the primary set of rules governing how the federal government purchases goods and services. It is codified as Title 48 of the Code of Federal Regulations (CFR), Chapter 1.

The FAR establishes uniform policies and procedures for all federal executive agencies to follow when they acquire supplies and services with appropriated funds. It applies to every federal procurement, from a $500 office supply purchase to a $10 billion weapons system.

The three goals of the FAR, as stated in FAR 1.102, are:

1. Satisfy the customer: Deliver timely, best-value products and services to the government
2. Minimize administrative costs: Reduce the burden on both the government and contractors
3. Conduct business with integrity: Ensure fairness, transparency, and public confidence

The FAR is maintained jointly by:

• Department of Defense (DoD): Through the Defense Acquisition Regulations Council (DARC)
• General Services Administration (GSA): Through the Civilian Agency Acquisition Council (CAAC)
• National Aeronautics and Space Administration (NASA)

These three agencies form the FAR Council, which issues updates and revisions to the regulation. The official source for the current FAR text is acquisition.gov.

A Brief History of the FAR

Before the FAR existed, federal procurement was governed by two separate regulatory systems:

• Federal Procurement Regulations (FPR): For civilian agencies
• Defense Acquisition Regulation (DAR): For the Department of Defense

This dual system created confusion, inconsistency, and administrative burden. In 1984, the government consolidated both systems into a single regulation: the Federal Acquisition Regulation.

Since then, the FAR has been updated hundreds of times through Federal Acquisition Circulars (FACs) and interim rules. Major legislative acts that have shaped the FAR include:

Understanding this history helps you appreciate why certain rules exist and how the regulatory environment continues to evolve.

Structure of the FAR: 53 Parts in 8 Subchapters

The FAR is organized into 53 parts, grouped into 8 subchapters. Each subchapter covers a major area of the acquisition process.

You do not need to know all 53 parts. Most contractors interact regularly with about 10-12 key parts. The rest apply to specialized situations.

The Most Important FAR Parts Every Contractor Should Know

These are the FAR parts you will encounter most often in your government contracting business.

FAR Part 2 - Definitions of Words and Terms

Part 2 defines the key terms used throughout the FAR. Understanding these definitions is critical because they have specific legal meanings that differ from everyday usage.

Essential definitions include:

• Contracting Officer (CO): The only person authorized to enter into, modify, or terminate a contract on behalf of the government
• Commercial Product/Service: A product or service sold to the general public or offered for sale
• Micro-purchase threshold: $10,000 (currently)
• Simplified Acquisition Threshold (SAT): $250,000 (currently)
• Best value: The expected outcome that provides the greatest overall benefit in response to the requirement
• Responsible contractor: A contractor that meets the standards of financial resources, performance record, integrity, and organizational capability

When you encounter an unfamiliar term in a solicitation, check Part 2 first.

FAR Part 6 - Competition Requirements

Part 6 establishes the requirement for full and open competition in federal procurement. This is one of the foundational principles of government contracting.

Key provisions:

• All federal procurements must be competed unless a specific exception applies
• Seven exceptions to full and open competition are defined (FAR 6.302):
  1. Only one responsible source (sole source)
  2. Unusual and compelling urgency
  3. Industrial mobilization
  4. International agreement
  5. Authorized or required by statute
  6. National security
  7. Public interest
• When competition is limited, the contracting officer must prepare a Justification and Approval (J&A) document

Understanding Part 6 helps you recognize when a solicitation is being improperly restricted and gives you grounds to challenge it. For more on sole-source contracting, see our sole source contracts guide.

FAR Part 12 - Acquisition of Commercial Products and Services

Part 12 is one of the most contractor-friendly parts of the FAR. It streamlines the acquisition process for commercial items, reducing paperwork and regulatory burden.

Why Part 12 matters to contractors:

• Simplified solicitation format: Commercial acquisitions use a streamlined solicitation (SF 1449) instead of the full-length RFP
• Fewer clauses: Commercial contracts include a much smaller set of FAR clauses
• Market-based pricing: The government accepts market prices rather than requiring cost breakdowns
• Faster awards: Commercial acquisitions typically move faster than traditional procurements
• Terms familiar to industry: The contract terms are closer to what you would see in a commercial contract

If your products or services qualify as "commercial" under the FAR definition, push for Part 12 treatment. It significantly reduces your compliance burden.

FAR Part 13 - Simplified Acquisition Procedures

Part 13 covers purchases below the Simplified Acquisition Threshold (SAT) of $250,000. These simplified procedures reduce administrative burden for both the government and contractors.

Key features:

• Less formal solicitation: May use a purchase order instead of a formal contract
• Streamlined evaluation: Often based on price and past performance alone
• Faster timeline: Awards can be made in days rather than months
• Small business preference: Purchases between $10,000 and $250,000 are automatically reserved for small businesses (FAR 13.003)
• Micro-purchases: Purchases under $10,000 can be made without competition

Simplified acquisitions represent a significant volume of government buying. For small businesses, these are often the easiest contracts to win. Learn more in our government contracting for beginners guide.

FAR Part 15 - Contracting by Negotiation

Part 15 governs the most common method for awarding large government contracts: competitive negotiation. This is the process used for most RFPs valued above the simplified acquisition threshold.

Key concepts in Part 15:

• Source selection process: How the government evaluates proposals and selects a winner
• Evaluation factors: Must be stated in the solicitation (technical, past performance, price)
• Competitive range: The group of proposals with a reasonable chance of being selected for award
• Discussions: The government may conduct discussions (negotiations) with offerors in the competitive range
• Best value continuum: Ranges from "lowest price technically acceptable" (LPTA) to "tradeoff" where technical quality can outweigh price
• Proposal revisions: Offerors may be asked to submit final proposal revisions (FPRs)
• Debriefings: Unsuccessful offerors are entitled to a debriefing explaining why they were not selected

Part 15 is dense and technical, but understanding it is essential for competing on large contracts. The source selection process described in Part 15 determines whether you win or lose.

FAR Part 19 - Small Business Programs

Part 19 implements the federal small business contracting programs. With the government's goal of awarding at least 23% of prime contract dollars to small businesses, this part directly affects thousands of contractors.

Programs covered in Part 19:

Key Part 19 rules:

• Contracts between $10,000 and $250,000 are automatically reserved for small businesses (the "Rule of Two")
• For contracts over $250,000, the contracting officer must conduct market research to determine if a set-aside is appropriate
• The "Rule of Two" requires that there be a reasonable expectation that at least two small businesses will submit competitive offers
• Size standard protests can be filed with the SBA

For more on small business programs, see our guide to government contracts for small business.

FAR Part 31 - Cost Principles and Procedures

Part 31 defines which costs are allowable, allocable, and reasonable when pricing government contracts. This part is especially important for cost-reimbursement contracts and contracts that require certified cost or pricing data.

Key concepts:

• Allowability: A cost must meet the allowability criteria to be reimbursed by the government
• Allocability: A cost must be allocable to the specific contract it is charged to
• Reasonableness: A cost must not exceed what a prudent person would pay in a competitive environment

Costs that are never allowable under the FAR include:

• Alcoholic beverages (FAR 31.205-51)
• Bad debts (FAR 31.205-3)
• Entertainment costs (FAR 31.205-14)
• Fines and penalties (FAR 31.205-15)
• Lobbying costs (FAR 31.205-22)
• Organizational costs (mergers, acquisitions) unless specifically approved
• First-class airfare (with limited exceptions)

Understanding Part 31 is essential for pricing your contracts correctly and avoiding disallowed costs during government audits.

FAR Part 52 - Solicitation Provisions and Contract Clauses

Part 52 is the most-referenced part of the FAR for working contractors. It contains the actual text of every standard FAR clause and provision that appears in solicitations and contracts.

Each clause has a unique number (e.g., FAR 52.212-4) and a title. Clauses are incorporated into contracts either:

• By full text: The entire clause text appears in the contract
• By reference: Only the clause number and title appear, but the full text applies

Understanding the key clauses in Part 52 is essential for knowing your rights and obligations under any government contract.

Key FAR Clauses Every Contractor Must Know

While Part 52 contains hundreds of clauses, certain ones appear in almost every solicitation and contract. These are the ones you need to understand.

The Commercial Item Clauses (52.212 Series)

For commercial acquisitions under FAR Part 12, the 52.212 series replaces most other FAR clauses:

When you see a solicitation using the 52.212 series, you know it is a commercial acquisition with a streamlined set of terms.

The Small Business Clauses (52.219 Series)

The 52.219 series implements the small business programs from FAR Part 19:

Pay close attention to 52.219-14 (Limitations on Subcontracting). This clause requires small business prime contractors to perform at least 50% of the work on service contracts (or specific other percentages for supply and construction contracts). Violating this clause can result in contract termination and fraud penalties.

Other Critical Clauses

The Termination for Convenience clause (52.249-2) is one of the most important, and most surprising, clauses for new contractors. It gives the government the unilateral right to end your contract at any time, for any reason, without default. You are entitled to payment for work performed and reasonable termination costs, but the government is not obligated to let you finish the contract.

FAR Thresholds: The Numbers That Matter

The FAR establishes several dollar thresholds that determine which rules apply to a given procurement. Knowing these thresholds helps you understand the regulatory environment for contracts of different sizes.

How Thresholds Affect You

Below $10,000 (Micro-Purchase):
The government can buy from anyone without competition using a government purchase card (credit card). These are the easiest sales to make but also the smallest.

$10,000 to $250,000 (Simplified Acquisition):
Purchases in this range are automatically reserved for small businesses and use streamlined procedures. This is the sweet spot for small businesses entering government contracting.

$250,000 to $2,000,000:
Full and open competition (or set-aside) applies. Standard solicitation and evaluation procedures are used. No certified cost or pricing data required.

Above $2,000,000:
The contracting officer may require certified cost or pricing data unless the acquisition is for commercial items or a price is based on adequate price competition. This means you may need to open your books.

Above $7,500,000:
Cost Accounting Standards (CAS) kick in. You must disclose your cost accounting practices and apply them consistently across all government contracts.

Agency Supplements: DFARS, GSAM, and Others

The FAR establishes baseline rules for all agencies, but individual agencies can add supplemental regulations that impose additional requirements. These supplements cannot contradict the FAR, but they can add to it.

The most important agency supplements:

DFARS: The Supplement That Matters Most

Because the Department of Defense accounts for 59.87% of all federal procurement spending ($755 billion total federal procurement market), the DFARS is the most important supplement for most contractors.

Key DFARS areas:

• DFARS 252.204-7012: Safeguarding Covered Defense Information and Cyber Incident Reporting (the basis for CMMC requirements)
• DFARS 252.225: Buy American and trade agreements specific to defense articles
• DFARS 252.227: Rights in technical data and computer software
• DFARS 252.247: Transportation of supplies by sea (preference for U.S.-flag vessels)

If you are pursuing DoD contracts, you need to know the DFARS almost as well as you know the FAR itself.

How FAR Affects Pricing: Part 31 Cost Principles

Your pricing strategy for government contracts must comply with FAR Part 31. This is especially true for cost-reimbursement contracts, time-and-materials contracts, and any contract where the government has audit rights.

Direct vs. Indirect Costs

The FAR distinguishes between:

• Direct costs: Costs that can be identified specifically with a particular contract (labor, materials, travel)
• Indirect costs: Costs incurred for common objectives that benefit multiple contracts (overhead, G&A, fringe benefits)

Your indirect cost rates (overhead rate, G&A rate, fringe benefit rate) must be computed in accordance with FAR Part 31 and applied consistently across all government contracts.

The Adequacy of Your Accounting System

For contracts above the simplified acquisition threshold, the government may evaluate the adequacy of your accounting system. An adequate system must:

• Segregate direct costs from indirect costs
• Accumulate costs under general ledger control
• Provide for consistent treatment of costs
• Distinguish between allowable and unallowable costs
• Identify costs by contract
• Provide timely and accurate financial reporting

If your accounting system is not adequate, you may be unable to win cost-reimbursement contracts or other contract types that require cost visibility.

Common Pricing Mistakes

1. Including unallowable costs: Charging entertainment, alcohol, or lobbying costs to a government contract
2. Inconsistent cost treatment: Treating the same cost as direct on one contract and indirect on another
3. Failure to disclose: Not disclosing your accounting practices when required by CAS
4. Understating indirect rates: Setting artificially low indirect rates to win, then being unable to sustain them
5. Ignoring the Service Contract Act: Not including required prevailing wages in service contract pricing

How to Read and Research FAR Clauses

When you receive a solicitation, it will include a list of applicable FAR clauses. Here is how to research them efficiently.

Step 1: Identify the Clauses

Look in Section I (Contract Clauses) of the solicitation. Clauses are listed by number and title. Some are incorporated by full text; others are incorporated by reference.

Step 2: Read the Full Text

Go to acquisition.gov/far and look up each clause by number. Read the full text, especially for clauses incorporated by reference, because the clause requirements apply even if the text is not printed in the solicitation.

Step 3: Check the Fill-in Blanks

Many FAR clauses have fill-in blanks that the contracting officer completes with contract-specific information. For example, FAR 52.216-18 (Ordering) includes blanks for the minimum and maximum order quantities. Make sure you understand the values inserted in these blanks.

Step 4: Note Any Deviations

Contracting officers can sometimes deviate from standard FAR clauses. Look for any clauses marked as "modified" or any agency-specific clauses (e.g., DFARS clauses in addition to FAR clauses).

Step 5: Assess Your Compliance

For each clause, determine whether your company can comply. If a clause requires something you cannot do (e.g., specific cybersecurity certifications, domestic manufacturing, facility clearances), you need to address that gap before submitting your proposal.

Bidovate's solicitation intelligence tools automatically parse solicitations and highlight key FAR clauses, compliance requirements, and evaluation criteria, helping you analyze RFPs faster and more accurately. The Mevin AI assistant can explain individual clauses and flag potential compliance issues in your specific situation.

Common FAR Compliance Mistakes

New and experienced contractors alike make these FAR compliance mistakes. Avoid them to protect your business.

1. Failing to Read the Clauses

Many contractors treat FAR clauses as boilerplate and skip reading them. This is dangerous. Clauses contain binding legal obligations. Missing a requirement can result in contract termination, cost disallowance, or even suspension and debarment.

2. Not Tracking Regulatory Changes

The FAR is updated regularly through Federal Acquisition Circulars (FACs). If you are not tracking changes, you may be operating under outdated rules. Subscribe to the Federal Register or monitor acquisition.gov for updates.

3. Ignoring Representations and Certifications

FAR 52.204-8 requires contractors to complete annual representations and certifications in SAM.gov. These include statements about your small business status, tax compliance, and organizational conflicts of interest. False certifications can result in criminal penalties under the False Claims Act.

4. Misunderstanding Termination Clauses

The government has two types of termination authority:

• Termination for Convenience (T4C): The government can end the contract at any time without cause. You receive payment for work performed.
• Termination for Default (T4D): The government terminates because you failed to perform. You may be liable for excess reprocurement costs.

Failing to understand the difference can cost you money and damage your past performance record.

5. Not Maintaining Required Records

Multiple FAR clauses require contractors to maintain specific records (timekeeping, cost accounting, equal employment opportunity records, etc.). Government auditors can request these records at any time during and after the contract. If you cannot produce them, you are in violation.

6. Organizational Conflicts of Interest (OCI)

FAR Subpart 9.5 addresses organizational conflicts of interest. If your company has access to non-public information or is in a position to bias a competition, you may have an OCI that disqualifies you from competing. Failing to identify and mitigate OCIs can result in contract termination and debarment.

7. Subcontracting Plan Non-Compliance

If you are a large business prime contractor, FAR 52.219-9 requires a small business subcontracting plan. Failing to make good-faith efforts to meet your subcontracting goals can result in liquidated damages equal to the amount you fell short.

FAR Resources for Contractors

Keep these resources bookmarked for FAR research:

• acquisition.gov/far: The official, authoritative source for the FAR text
• acquisition.gov/dfars: The Defense FAR Supplement
• sam.gov: Contract opportunities and entity registration
• govinfo.gov: Federal Register notices for FAR changes
• gao.gov: GAO bid protest decisions interpreting FAR provisions
• cbca.gov: Civilian Board of Contract Appeals decisions
• asbca.mil: Armed Services Board of Contract Appeals decisions

How Bidovate Helps You Navigate the FAR

The FAR is complex, but you do not have to navigate it alone.

Bidovate's solicitation intelligence automatically identifies the FAR clauses in every solicitation and translates them into plain-language compliance checklists. Instead of manually reading through dozens of clauses, you can instantly see what is required and where your gaps are.

The platform's Mevin AI assistant can answer your FAR questions in context, explaining what a specific clause means for your company, comparing clause requirements across multiple solicitations, and flagging unusual or non-standard provisions that require extra attention.

Bidovate's Vault knowledge base stores your compliance documents, past performance narratives, and boilerplate responses organized by FAR clause, so you can quickly find and reuse proven content across proposals.

With Bidovate monitoring SAM.gov, FPDS, USAspending, and over 1,000 additional portals across the $2.2 trillion U.S. procurement market, you can focus on understanding requirements rather than finding them.

Book a demo to see how Bidovate makes FAR compliance faster and easier.

Frequently Asked Questions

Where can I read the full text of the FAR?

The official, up-to-date text of the Federal Acquisition Regulation is available at acquisition.gov/far. This site is maintained by the General Services Administration and is the authoritative source. You can browse by part, search by keyword, or download the entire FAR. Agency supplements (DFARS, GSAM, etc.) are available at the same site under their respective sections. The FAR is also available through the Government Publishing Office at govinfo.gov as part of Title 48 of the Code of Federal Regulations.

How often is the FAR updated?

The FAR is updated frequently through Federal Acquisition Circulars (FACs), which are published in the Federal Register. Major updates happen several times per year, while minor corrections and clarifications can occur at any time. Each FAC includes one or more final rules that amend specific FAR sections. Interim rules can also be issued when urgent changes are needed. You should monitor acquisition.gov and the Federal Register for updates that affect your NAICS codes and contract types.

Does the FAR apply to state and local government contracts?

No. The FAR only applies to federal executive agency procurements. State and local governments have their own procurement regulations, which vary by jurisdiction. However, many state and local procurement codes were modeled after the FAR and share similar principles (competitive bidding, small business preferences, cost principles). Some state contracts that use federal pass-through funding may require compliance with certain federal regulations, including portions of the FAR. The state and local market represents approximately $1.5 trillion in annual spending and has its own set of rules and requirements.

What is the difference between a FAR clause and a FAR provision?

A FAR provision applies only during the solicitation phase. It governs how you prepare and submit your proposal. Provisions are found in Section L (Instructions to Offerors) and Section K (Representations and Certifications) of the solicitation. A FAR clause, by contrast, becomes part of the contract after award and governs your obligations during performance. Clauses appear in Section I of the solicitation. Both provisions and clauses are numbered under Part 52, but provisions have different numbering patterns. For example, 52.215-1 is a provision (Instructions to Offerors) while 52.215-2 is a clause (Audit and Records).

Can contractors challenge or appeal FAR requirements in a solicitation?

Yes, in several ways. If you believe a solicitation contains terms that improperly restrict competition or misapply FAR requirements, you can ask the contracting officer for clarification or amendment through the questions and answers process. If the contracting officer does not address your concern, you can file a pre-award bid protest with the Government Accountability Office (GAO) or the U.S. Court of Federal Claims. GAO protest decisions often turn on interpretations of FAR provisions. You can also appeal the assignment of a NAICS code to the SBA's Office of Hearings and Appeals. However, you cannot challenge the FAR itself, only how it is applied in a specific solicitation.

Understanding the FAR is fundamental to success in government contracting. For related guides, read about the different types of government contracts defined by the FAR, learn about sole source contracting under FAR Part 6, or start with our government contracting for beginners guide.