FAR Compliance for Small Business Contractors: What You Need to Know

Every dollar the federal government spends on contracts follows a single set of rules. Those rules live in the Federal Acquisition Regulation (FAR), codified in Title 48, Chapter 1 of the Code of Federal Regulations. The FAR governs how agencies plan purchases, solicit bids, evaluate proposals, award contracts, and manage performance.

If you plan to sell to the federal government, FAR compliance is not optional. It is the price of entry. The good news: you do not need to memorize all 53 parts. Most small businesses interact with the same handful of parts, clauses, and thresholds over and over.

This guide breaks down the FAR into the pieces that matter most for small business contractors. By the end, you will know the four parts to study first, the dollar thresholds that affect your contracts, and the 10 compliance mistakes that trip up new contractors.

Before reading this article, make sure you understand the basics of how to bid on government contracts. Bidding is where FAR compliance starts showing up in your daily work.

What Is the FAR and Why Does It Matter?

The Federal Acquisition Regulation is the primary rulebook for all federal agency purchases. It tells contracting officers what they can buy, how they can buy it, and what terms to include in every contract. It also tells contractors what the government expects from them before, during, and after contract performance.

The FAR exists for three reasons. First, it protects taxpayer money by requiring competition and fair pricing. Second, it creates a level playing field so small businesses can compete against larger firms. Third, it standardizes the buying process across all federal agencies, so the rules at the Department of Defense (DoD) follow the same framework as the rules at the Department of Education.

Ignoring the FAR does not just risk losing a contract. Serious violations can trigger penalties under the False Claims Act (treble damages plus $14,308 to $28,619 per violation as of 2025), debarment from all future government work, or criminal prosecution.

How the FAR Is Organized

The FAR contains 53 parts, organized into eight subchapters. Each part covers a different aspect of the acquisition process. Here is the structure:

Source: FAR 1.105-2 Arrangement of Regulations

Reading the Numbering System

FAR references follow a consistent pattern. Take FAR 19.502-2 as an example:

• 19 = Part (Small Business)
• .5 = Subpart (Set-Asides for Small Business)
• 02 = Section (Total Small Business Set-Asides)
• -2 = Subsection (specific provision within that section)

Once you understand this pattern, you can look up any FAR citation in seconds at acquisition.gov.

The 4 FAR Parts Every Small Business Must Know

You do not need to read all 53 parts. Start with these four. They cover the vast majority of situations a small business contractor will encounter.

Part 12: Commercial Products and Commercial Services

If you sell something that is already available in the commercial market, Part 12 is your best friend. It establishes simplified policies for buying commercial items. The government assumes that market competition has already driven prices to fair levels, so it reduces documentation requirements compared to traditional acquisitions.

For small businesses, Part 12 means less paperwork, faster awards, and fewer compliance hoops. If your product or service has a commercial equivalent, you want the contracting officer to use Part 12 procedures.

Source: FAR Part 12

Part 13: Simplified Acquisition Procedures

Part 13 covers purchases below the Simplified Acquisition Threshold (SAT), which is $350,000 as of October 1, 2025. These procedures cut red tape for both the government and contractors. Solicitations are shorter. Evaluation criteria are simpler. Timelines are faster.

This is the most common entry point for small businesses. Contracts under $350,000 use shorter, simpler processes that do not require the full formal proposal structure of larger acquisitions. For commercial items, simplified procedures can apply to even higher dollar amounts under FAR 13.500.

Source: FAR Part 13

Part 15: Contracting by Negotiation

When contracts are too large or complex for simplified procedures, Part 15 takes over. This part governs formal competitive proposals, price negotiations, and best-value tradeoff evaluations. It requires more detailed proposals and, for larger contracts, may require certified cost or pricing data.

Small businesses encounter Part 15 when bidding on larger contracts. The evaluation process is more rigorous, but it also gives you more room to compete on quality and technical approach rather than price alone.

Source: FAR Part 15

Part 19: Small Business Programs

Part 19 is the most important part for small business contractors. It establishes set-aside programs, size standards, and rules that ensure small businesses get a fair share of federal contracts.

On September 26, 2025, the FAR Council issued a major rewrite of Part 19. The new structure organizes requirements around the acquisition life cycle: presolicitation (19.1), evaluation and award (19.2), and postaward (19.3). The “rule of two” remains in effect: if a contracting officer expects at least two responsible small businesses to submit competitive offers, the contract must be set aside for small businesses.

Part 19 also covers the SBA certification programs that give qualified businesses access to set-aside and sole-source contracts, including 8(a), HUBZone, Women-Owned Small Business (WOSB), and Service-Disabled Veteran-Owned Small Business (SDVOSB).

Sources: FAR Part 19, Holland & Knight: FAR Part 19 Overhaul

Key Clause Families You Will See in Every Contract

FAR Part 52 contains every standard clause and provision used in government contracts. Clauses are organized by number, and each number maps back to the FAR part it came from. Three clause families show up in nearly every small business contract.

52.212-x: Commercial Item Clauses

These clauses apply to commercial product and service acquisitions under Part 12. The most important is FAR 52.212-4, which sets the standard terms and conditions for commercial contracts. It covers inspection, acceptance, payment, disputes, and termination. If you sell commercial items, this clause family defines your contractual obligations.

52.219-x: Small Business Clauses

These clauses enforce the small business requirements from Part 19. Key clauses include:

• 52.219-1: Small Business Program Representations (your self-certification of size and status)
• 52.219-8: Utilization of Small Business Concerns (requires primes to use small business subcontractors)
• 52.219-9: Small Business Subcontracting Plan (for contracts over $900,000, or $2 million for construction)
• 52.219-14: Limitations on Subcontracting (small business primes must perform minimum work percentages)

52.222-x: Labor Clauses

These clauses enforce employment and labor laws on government contracts. You will encounter them on nearly every service contract. Key clauses include:

• 52.222-26: Equal Opportunity
• 52.222-35: Equal Opportunity for Veterans
• 52.222-36: Equal Opportunity for Workers with Disabilities
• 52.222-41: Service Contract Labor Standards (service contracts exceeding $2,500)
• 52.222-50: Combating Trafficking in Persons

Source: FAR 52.212-5

Current Dollar Thresholds (Effective October 1, 2025)

The FAR uses dollar thresholds to determine which rules apply to a given contract. Congress adjusts these thresholds periodically for inflation. The most recent adjustment took effect on October 1, 2025, under FAC 2025-05.

Sources: Acquisition.gov Threshold Changes, Federal Register: Inflation Adjustment Rule (Aug 27, 2025)

These thresholds matter because they determine which set of rules applies to your contract. A $14,000 purchase follows micro-purchase rules. A $200,000 contract follows simplified acquisition procedures. A $5 million contract follows full Part 15 negotiation rules. Knowing where your contract falls tells you exactly how much compliance work to expect.

DFARS: The Defense Supplement

If you work on Department of Defense contracts, the FAR is only the starting point. The Defense Federal Acquisition Regulation Supplement (DFARS), codified in Title 48 CFR Chapter 2, adds requirements specific to defense procurement.

Sources: DFARS, Deltek: FAR vs DFARS

The biggest DFARS requirement for small businesses is cybersecurity. DFARS 252.204-7012 requires contractors handling Controlled Unclassified Information (CUI) to meet 110 security controls from NIST Special Publication 800-171. The Cybersecurity Maturity Model Certification (CMMC) program enforces these requirements through third-party assessments. Even subcontractors must comply if CUI flows down to them.

Wide Area Workflow (WAWF) for Invoicing

DoD contractors submit invoices through the Wide Area Workflow (WAWF) system, a secure web-based platform for electronic invoicing, receipt, and acceptance. To use WAWF, you need a designated electronic business point of contact in SAM.gov and a registration at wawf.eb.mil.

WAWF is mandatory for DoD contracts under DFARS 252.232-7006. The system handles different document types depending on your contract structure: standard invoices for fixed-price contracts, cost vouchers for cost-type line items, and progress payment requests for customary progress payments.

10 Common FAR Compliance Mistakes (and How to Avoid Them)

These are the errors that trip up small business contractors most often. Each one is avoidable with basic preparation.

1. Misclassifying Direct vs. Indirect Costs

Direct costs (labor and materials on a specific contract) must be separated from indirect costs (overhead, general and administrative expenses). Mixing them creates red flags during audits. Set up your accounting system to track costs by contract from day one.

2. Inadequate Timekeeping

The Defense Contract Audit Agency (DCAA) requires daily time recording against correct charge codes. Every change needs an audit trail with employee-entered reasons. Paper-based systems are acceptable, but they must be consistent and verifiable.

3. Failing to Flow Down FAR Clauses to Subcontractors

When you are the prime contractor, certain FAR clauses must be included in your subcontracts. Missing flow-down clauses can result in termination for default. Review every subcontract against the prime contract’s clause list before signing.

4. Stale SAM.gov Registration

Your SAM.gov registration must stay current and accurate. Outdated information can delay contract awards and payments. Set a calendar reminder to review your registration quarterly, and renew it annually before it expires.

5. Misclassifying Workers as Independent Contractors

The government looks closely at worker classification on service contracts. Incorrectly classifying employees as independent contractors triggers back taxes, penalties, and potential contract violations. When in doubt, consult an employment attorney.

6. Billing Unallowable Costs

FAR Part 31 defines which costs are allowable on government contracts. Entertainment, lobbying, alcohol, and certain legal costs are unallowable. Billing them can trigger False Claims Act penalties: treble damages plus $14,308 to $28,619 per violation. Know the unallowable cost categories before you submit your first invoice.

7. Missing Subcontracting Plan Requirements

If your company is a large business (other-than-small) and you win a contract over $900,000 ($2 million for construction), you must submit a small business subcontracting plan. Failure to negotiate an acceptable plan makes you ineligible for award. Even small businesses should understand this requirement because it creates subcontracting opportunities for them.

8. Cybersecurity Non-Compliance on DoD Contracts

If you handle CUI on a DoD contract, you must meet NIST 800-171 controls and eventually achieve CMMC certification. Non-compliance disqualifies you from bidding. Start your cybersecurity assessment early because meeting all 110 controls takes time.

9. Exceeding Limitations on Subcontracting

Small business primes receiving set-aside contracts must perform a minimum percentage of the work themselves. Subcontracting too much of the work to other firms, especially large businesses, violates FAR 52.219-14 and can result in contract termination and debarment.

10. Ignoring Reporting Deadlines

Government contracts come with reporting requirements: subcontracting reports in the Electronic Subcontracting Reporting System (eSRS), performance evaluations in the Contractor Performance Assessment Reporting System (CPARS), and deliverables specified in the Statement of Work. Late or missing reports damage your performance record and affect future contract awards.

Sources: GovPointe: Common Compliance Pitfalls, USFCR: Federal Contracting Compliance Guide

The 2026 FAR Overhaul: What Is Changing

In April 2025, Executive Order 14275 directed agencies to overhaul the FAR. This is the most significant rewrite of federal buying rules in decades. The first wave of changes took effect on February 1, 2026, with additional changes rolling out through June 30, 2026.

Here is what small businesses need to know:

• Defense contracts under $10 million: Small businesses will no longer need to submit certified cost or pricing data (effective after June 30, 2026, per the FY2026 National Defense Authorization Act).
• Accelerated payments: FAR 52.232-40 now mandates that prime contractors make accelerated payments to small business subcontractors within 15 days of receiving accelerated payments from the government.
• Clause renumbering: FAR clause numbers are being updated. Contractors must verify that compliance matrices and proposal boilerplate reference current clause versions.
• Set-aside decisions on task orders: Set-aside decisions for orders under multiple-award contracts are now discretionary and non-protestable.
• FAR Part 19 rewrite: The September 2025 restructuring reorganized small business requirements around the acquisition life cycle.

The overhaul is rolling out in two phases. Phase 1 uses interim class deviations that take effect immediately. Phase 2 involves formal rulemaking for permanent changes. Both phases are tracked at acquisition.gov/far-overhaul.

The bottom line: stay current. Bookmark acquisition.gov and check it monthly. Subscribe to the Federal Register notices for FAR updates. If you work with a contracts attorney or consultant, make sure they are tracking these changes for you.

Sources: USFCR: FAR Being Rewritten, Withum: Revolutionary FAR Overhaul

Frequently Asked Questions

What is the FAR in government contracting?

The Federal Acquisition Regulation (FAR) is the primary set of rules governing how all federal agencies buy products and services. It is codified in Title 48 of the Code of Federal Regulations. Every federal contract incorporates FAR clauses, and every contractor must comply with the parts and clauses that apply to their contracts.

Do small businesses need a DCAA-compliant accounting system?

It depends on the contract type. Cost-reimbursement contracts and time-and-materials contracts require an accounting system that can pass a DCAA pre-award survey (SF 1408). Firm-fixed-price contracts generally do not. If you plan to pursue cost-type contracts, set up a compliant accounting system before you bid.

What is the difference between FAR and DFARS?

The FAR applies to all federal agencies. The Defense Federal Acquisition Regulation Supplement (DFARS) adds requirements specific to Department of Defense contracts. The DFARS does not replace the FAR. It supplements and, in some cases, modifies FAR requirements for DoD work. The biggest addition is cybersecurity requirements under DFARS 252.204-7012.

What happens if you violate FAR regulations?

Penalties range from contract termination to criminal prosecution, depending on the severity. False Claims Act violations carry treble damages plus per-claim penalties. Debarment bars your company from all government contracting. Even minor violations, like late reports, can damage your CPARS ratings and reduce your competitiveness on future bids.

How often is the FAR updated?

The FAR is updated through Federal Acquisition Circulars (FACs) published in the Federal Register. Updates happen multiple times per year. The 2026 FAR Overhaul under Executive Order 14275 is producing the most significant round of changes in decades, with new rules rolling out from February through June 2026. Contractors should check acquisition.gov regularly for updates.

Your Next Step

You now understand the FAR’s structure, the parts that matter most, and the compliance mistakes to avoid. The next step is learning about the SBA small business programs that give you access to set-aside and sole-source contracts. These programs, governed by FAR Part 19, are one of the most powerful tools available to small business contractors.

If you have not already, review what government contracting is and how to bid on government contracts to make sure your foundation is solid before tackling compliance in depth.

Continue to Small Business Programs →

This article is for informational purposes only. It is not legal, financial, or regulatory advice. Consult with qualified professionals for guidance specific to your business.