FAR and DFARS › FAR Part 15: Contracting by Negotiation › Subpart 15.3
FAR 15.304 Evaluation factors and significant subfactors.
The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.
In plain English
This section explains how agencies must choose and use evaluation factors and significant subfactors when awarding contracts. It requires that price or cost be evaluated in every source selection, with a limited exception for certain multiple-award contracts by DoD, NASA, and the Coast Guard, and that quality be addressed through non-cost factors. It also requires past performance evaluation in most negotiated competitive acquisitions above the simplified acquisition threshold, and that solicitations clearly state the factors, their relative importance, and how non-cost factors compare to cost or price.
Applies to: Agencies conducting source selections and contractors submitting proposals
What it requires
- Evaluate price or cost in every source selection, except as allowed for certain DoD, NASA, and Coast Guard multiple-award contracts.
- Address quality through one or more non-cost evaluation factors.
- Evaluate past performance in all source selections for negotiated competitive acquisitions expected to exceed the simplified acquisition threshold, unless documented as not appropriate.
- State clearly in the solicitation all factors and significant subfactors that will affect award and their relative importance.
Key terms: evaluation factors · significant subfactors · source selection · simplified acquisition threshold · past performance
Written by AI from this section's text. A guide, not legal advice: the text below rules.
The text
(a) The award decision is based on evaluation factors and significant subfactors that are tailored to the acquisition.
(b) Evaluation factors and significant subfactors must—
(1) Represent the key areas of importance and emphasis to be considered in the source selection decision; and
(2) Support meaningful comparison and discrimination between and among competing proposals.
(c) The evaluation factors and significant subfactors that apply to an acquisition and their relative importance are within the broad discretion of agency acquisition officials, subject to the following requirements:
(1)(i) Price or cost to the Government shall be evaluated in every source selection (10 U.S.C. 3206(c)(1)(B) and 41 U.S.C. 3306(c)(1)(B)) (also see part 36 for architect-engineer contracts), subject to the exception listed in paragraph (c)(1)(ii)(A) of this section for use by DoD, NASA, and the Coast Guard.
(ii) In accordance with 10 U.S.C. 3206(c), for DoD, NASA, and the Coast Guard—
(A) The contracting officer may choose not to include price or cost as an evaluation factor for award when a solicitation—
(1) Has an estimated value above the simplified acquisition threshold;
(2) Will result in multiple-award contracts (see subpart 16.5) that are for the same or similar services; and
(3) States that the Government intends to make an award to each and all qualifying offerors (see 2.101).
(B) If the contracting officer chooses not to include price or cost as an evaluation factor for the contract award, in accordance with paragraph (c)(1)(ii)(A) of this section, the contracting officer shall consider price or cost as one of the factors in the selection decision for each order placed under the contract.
(C) The exception in paragraph (c)(1)(ii)(A) of this section shall not apply to solicitations for multiple-award contracts that provide for sole source orders pursuant to section 8(a) of the Small Business Act (15 U.S.C. 637(a)).
(2) The quality of the product or service shall be addressed in every source selection through consideration of one or more non-cost evaluation factors such as past performance, compliance with solicitation requirements, technical excellence, management capability, personnel qualifications, and prior experience ((10 U.S.C. 3206(c)(1)(A)and 41 U.S.C. 3306(c)(1)(A)).
(3)(i) Past performance, except as set forth in paragraph (c)(3)(iii) of this section, shall be evaluated in all source selections for negotiated competitive acquisitions expected to exceed the simplified acquisition threshold.
(ii) For solicitations that are not set aside for small business concerns, involving consolidation or bundling, that offer a significant opportunity for subcontracting, the contracting officer shall include a factor to evaluate past performance indicating the extent to which the offeror attained applicable goals for small business participation under contracts that required subcontracting plans (15 U.S.C. 637(d)(4)(G)(ii)).
(iii) Past performance need not be evaluated if the contracting officer documents the reason past performance is not an appropriate evaluation factor for the acquisition.
(4) For solicitations, that are not set aside for small business concerns, involving consolidation or bundling, that offer a significant opportunity for subcontracting, the contracting officer shall include proposed small business subcontracting participation in the subcontracting plan as an evaluation factor (15 U.S.C. 637(d)(4)(G)(i)).
(5) If telecommuting is not prohibited, agencies shall not unfavorably evaluate an offer that includes telecommuting unless the contracting officer executes a written determination in accordance with FAR 7.108(b).
(d) All factors and significant subfactors that will affect contract award and their relative importance shall be stated clearly in the solicitation (10 U.S.C. 3206(b)(1) and 41 U.S.C. 3306(b)(1) (see 15.204-5(c)). The rating method need not be disclosed in the solicitation. The general approach for evaluating past performance information shall be described.
(e) Unless the exception at paragraph (c)(1)(ii)(A) of this section applies, the solicitation shall also state, at a minimum, whether all evaluation factors other than cost or price, when combined, are—
(1) Significantly more important than cost or price;
(2) Approximately equal to cost or price; or
(3) Significantly less important than cost or price (10 U.S.C. 3206(c)(1)(C) and 41 U.S.C. 3306(c)(1)(C)).
Sections it refers to
Sections that refer to it
- 2.101 Definitions.
- 4.1005-2 Exceptions.
- 15.101-2 Lowest price technically acceptable source selection process.
- 15.204-5 Part IV—Representations and Instructions.
- 15.305 Proposal evaluation.
- 35.007 Solicitations.
- 36.303-2 Phase Two.
- 52.212-2 Evaluation—Commercial Products and Commercial Services.
- § 215.305 215.305 Proposal evaluation.
- 235.006-70 Manufacturing Technology Program.
- 247.206 Preparation of solicitations and contracts.
← 15.303 Responsibilities. · 15.305 Proposal evaluation. →
Rule changes for FAR Part 15
- Federal Acquisition Regulation: Revolutionary FAR Overhaul Parts 8, 12, 13, 15, 38, 44, and 51 ↗ · proposed 2026-09-18 · comments due 2026-10-19
- Federal Acquisition Regulation: Inflation Adjustment of Acquisition-Related Thresholds ↗ · final rule 2025-08-27 · effective 2025-10-01
- Federal Acquisition Regulation: Preventing Organizational Conflicts of Interest in Federal Acquisition ↗ · proposed 2025-01-15 · comments due 2025-03-17
- Federal Acquisition Regulation: Controlled Unclassified Information ↗ · proposed 2025-01-15 · comments due 2025-03-17
- Federal Acquisition Regulation: Inflation Adjustment of Acquisition-Related Thresholds ↗ · proposed 2024-11-29 · comments due 2025-01-28
- Federal Acquisition Regulation: Reverse Auction Guidance ↗ · final rule 2024-07-30 · effective 2024-08-29
- Federal Acquisition Regulation: Sustainable Procurement ↗ · final rule 2024-04-22 · effective 2024-05-22
Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.