FAR Part 2.101: Definitions (The FAR Dictionary Every Bid Team Uses) Verified 2026

FAR 2.101 is the official Definitions section of the Federal Acquisition Regulation. It is the FAR’s dictionary: when a solicitation, clause, or policy uses a key term, FAR 2.101 is often where the Government’s meaning is locked in. For contractors, this section is not “background reading.” It is a practical tool that prevents misinterpretation, protects pricing assumptions, and reduces proposal compliance mistakes caused by using everyday commercial meanings for federally defined terms.

Why FAR 2.101 matters in real federal procurement

Federal solicitations are dense and clause-heavy. Many requirements are triggered by defined terms and thresholds rather than long explanations. FAR 2.101 helps you answer questions that decide your entire pursuit strategy, such as:

• Is this buy likely to run as a quick RFQ under simplified acquisition procedures, or a full negotiated RFP?
• Which thresholds change competition rules, clause applicability, and documentation load?
• What does the Government mean by “micro-purchase,” “offer,” “option,” or “commercial product” in this specific context?

When teams skip definitions, they often miss hidden triggers that affect labor compliance, subcontract flowdowns, cybersecurity handling, reporting, and post-award rights.

2026 threshold definitions that show up everywhere

Two definitions in FAR 2.101 are routinely used by contracting officers and show up across FAR parts and clauses.

Micro-purchase threshold (MPT)

FAR 2.101 defines the micro-purchase threshold as $15,000, with critical exceptions for wage rate construction and certain labor-covered services, and higher limits for contingency, disaster, emergency response, and certain defense support situations. In practice, MPT influences how fast a buyer can purchase and how lightweight the procurement process can be.

Simplified acquisition threshold (SAT)

FAR 2.101 defines the simplified acquisition threshold as $350,000, with higher thresholds for contingency and emergency response scenarios and a specific threshold for humanitarian or peacekeeping operations outside the United States. SAT is a major signal for sellers because it often determines whether the buying office can use faster simplified procedures rather than a long negotiated RFP cycle.

Other definition families contractors rely on

FAR 2.101 includes many more definitions that can change what you must submit, how you structure pricing, and what clauses apply. High-impact categories include:

• Procurement type definitions (especially commercial concepts) that influence clause selection, negotiation posture, and documentation requirements
• Contract formation terms that clarify whether your submission is treated as an offer or a quotation and how binding your commitments are
• Administration terms used repeatedly in contract clauses, affecting how options, ordering, and performance mechanics are interpreted

How to use FAR 2.101 during an RFP review

Use FAR 2.101 as a fast, repeatable control step before you write narrative or lock pricing:

1. Extract terms that affect thresholds, eligibility, scope, contract type, reporting, or compliance.
2. Align one shared definition set across proposal, contracts, finance, and delivery so assumptions are consistent.
3. Tie the definition to the clause matrix so you can trace why an obligation is triggered.
4. If an agency supplement is in play, confirm whether it refines a definition for that environment and record the hierarchy your team will follow.

Quick FAQ for SEO and internal enablement

Is FAR 2.101 the same as FAR Part 2? FAR Part 2 is the broader section for definitions and words and terms. FAR 2.101 is the primary definitions list used across the FAR.

Why do thresholds in FAR 2.101 matter to contractors? Because thresholds drive buying method, competition expectations, clause burden, and how quickly an agency can issue an order.

Do thresholds change over time? Yes. Thresholds are periodically adjusted, so it is best practice to mark your internal references as verified against the official sources in the current year.

Sources

• FAR 2.101 Definitions (Acquisition.gov)
• Threshold Changes Effective October 1, 2025 (Acquisition.gov)
• Publication of FAC 2025-06 (Acquisition.gov)
• Federal Register on GovInfo: FAR Case 2024-001, Inflation Adjustment of Acquisition-Related Thresholds (Effective Oct 1, 2025)
• 48 CFR 2.101 Definitions (Cornell Law School)