FAR 15.101-2—Lowest price technically acceptable source selection process.
Plain-English Summary
FAR 15.101-2 explains when and how the lowest price technically acceptable (LPTA) source selection process may be used. It covers the basic definition of LPTA, the required solicitation language and evaluation structure, the treatment of past performance, the prohibition on tradeoffs, the fact that proposals are checked for acceptability rather than ranked on non-price factors, and the possibility of exchanges under FAR 15.306. It also adds important limits on use of LPTA outside the Department of Defense: the contracting officer must be able to clearly define minimum requirements, expect little or no value from proposals above minimums, have little need for subjective technical judgment, believe a deeper technical review will not reveal added value, determine that the lowest price reflects total life-cycle cost, and document the file. Finally, it directs contracting officers to avoid LPTA to the maximum extent practicable for certain acquisitions, including IT services, cybersecurity, systems engineering and technical assistance, advanced electronic testing, audit/audit readiness, health care, records, telecommunications, other knowledge-based professional services, personal protective equipment, and certain knowledge-based training or logistics services in contingency or overseas operations. In practice, this section is meant to reserve LPTA for acquisitions where the government truly only needs a minimum acceptable solution and where paying more for higher quality would not produce meaningful benefit.
Key Rules
Use only for minimum needs
LPTA is appropriate only when the government expects best value from the technically acceptable proposal with the lowest evaluated price. It is not a general-purpose method for all procurements and should fit acquisitions where minimum requirements fully describe what the agency needs.
Solicitation must define acceptability
The solicitation must state the evaluation factors and significant subfactors that establish acceptability standards. It must also say award will go to the lowest evaluated price among proposals that meet or exceed those standards for non-price factors.
Past performance is optional
If the contracting officer documents the file under FAR 15.304(c)(3)(iii), past performance does not have to be an evaluation factor. If it is used, it must be evaluated under FAR 15.305, but the comparative assessment rules in FAR 15.305(a)(2)(i) do not apply.
No tradeoffs allowed
Under LPTA, the government may not trade higher technical quality for a higher price or vice versa. Once proposals are found technically acceptable, award goes to the lowest evaluated price.
Evaluate for acceptability, not ranking
Non-price factors are used only to determine whether a proposal meets the minimum standard. Proposals are not ranked against each other on those factors, so the source selection is not a comparative technical competition.
Exchanges may still occur
The contracting officer may conduct exchanges under FAR 15.306. Even in LPTA, discussions or clarifications may be used if consistent with the acquisition strategy and the rules governing exchanges.
Strict conditions outside DoD
For non-DoD agencies, LPTA may be used only when the agency can clearly define minimum requirements, expects little or no value above minimums, anticipates little subjective judgment, has high confidence that deeper review will not reveal added value, and determines that the lowest price reflects total cost, including operation and support.
File documentation required
Outside DoD, the contracting officer must document the contract file explaining the circumstances that justify use of LPTA. This documentation is a key safeguard and should support the decision to use this method.
Avoid LPTA for sensitive categories
Outside DoD, contracting officers must avoid LPTA to the maximum extent practicable for certain predominantly service or supply acquisitions, including IT, cybersecurity, systems engineering and technical assistance, advanced electronic testing, audit-related services, health care, records, telecommunications, PPE, and certain training or logistics services in contingency or overseas operations.
Small business past performance referral
If a small business offeror’s past performance is found unacceptable, the matter must be referred to SBA for a Certificate of Competency determination under subpart 19.6 and 15 U.S.C. 637(b)(7). This protects small businesses from certain adverse responsibility-type outcomes.
Responsibilities
Contracting Officer
Decide whether LPTA is appropriate, ensure the solicitation clearly states acceptability standards and award basis, document any decision to omit past performance, avoid prohibited tradeoffs, conduct any exchanges consistent with FAR 15.306, justify use of LPTA in the contract file for non-DoD procurements, and avoid LPTA for the listed categories to the maximum extent practicable.
Source Selection Authority
Apply the solicitation’s minimum acceptability standards and select the lowest evaluated price among technically acceptable proposals. The SSA may not make tradeoffs between technical superiority and price under LPTA.
Agency
Use LPTA only when the acquisition strategy fits the rule’s narrow purpose, especially outside DoD. The agency must be able to define minimum requirements clearly and determine that higher-rated technical solutions would not add meaningful value.
Offerors/Contractors
Submit proposals that meet or exceed all stated acceptability standards. Offerors should understand that exceeding minimum requirements will not improve their chance of award under LPTA if their price is higher.
Small Business Administration
Review referred cases involving a small business offeror whose past performance is found unacceptable and make a Certificate of Competency determination under the applicable procedures.
Practical Implications
LPTA is a narrow tool, not a default source selection method. If the requirement is complex, subjective, or likely to benefit from innovation or higher quality, LPTA is usually a poor fit.
The solicitation must be drafted carefully. If acceptability standards are vague or incomplete, the agency risks protests, inconsistent evaluations, or an award that cannot be defended.
Price matters most under LPTA, but only after technical acceptability is established. Contractors should focus on meeting every minimum requirement rather than trying to outshine competitors on features that will not be scored.
Outside DoD, agencies need a strong paper trail. Missing or thin documentation on why LPTA was chosen is a common vulnerability in acquisition reviews and bid protests.
The list of categories to avoid is a major warning sign. For IT, cybersecurity, health care, PPE, and similar buys, contracting officers should carefully consider whether another best-value method is more appropriate and whether LPTA can be justified at all.
Official Regulatory Text
(a) The lowest price technically acceptable source selection process is appropriate when best value is expected to result from selection of the technically acceptable proposal with the lowest evaluated price. (b) When using the lowest price technically acceptable process, the following apply: (1) The evaluation factors and significant subfactors that establish the requirements of acceptability shall be set forth in the solicitation. Solicitations shall specify that award will be made on the basis of the lowest evaluated price of proposals meeting or exceeding the acceptability standards for non-cost factors. If the contracting officer documents the file pursuant to 15.304 (c)(3)(iii), past performance need not be an evaluation factor in lowest price technically acceptable source selections. If the contracting officer elects to consider past performance as an evaluation factor, it shall be evaluated in accordance with 15.305 . However, the comparative assessment in 15.305 (a)(2)(i) does not apply. If the contracting officer determines that a small business’ past performance is not acceptable, the matter shall be referred to the Small Business Administration for a Certificate of Competency determination, in accordance with the procedures contained in subpart 19.6 and 15 U.S.C. 637(b)(7) ). (2) Tradeoffs are not permitted. (3) Proposals are evaluated for acceptability but not ranked using the non-cost/price factors. (4) Exchanges may occur (see 15.306 ). (c) Except for DoD, in accordance with section 880 of the John S. McCain National Defense Authorization Act for Fiscal Year 2019 (Pub. L. 115-232, 41 U.S.C. 3701 Note), the lowest price technically acceptable source selection process shall only be used when— (1) The agency can comprehensively and clearly describe the minimum requirements in terms of performance objectives, measures, and standards that will be used to determine the acceptability of offers; (2) The agency would realize no, or minimal, value from a proposal that exceeds the minimum technical or performance requirements; (3) The agency believes the technical proposals will require no, or minimal, subjective judgment by the source selection authority as to the desirability of one offeror's proposal versus a competing proposal; (4) The agency has a high degree of confidence that reviewing the technical proposals of all offerors would not result in the identification of characteristics that could provide value or benefit to the agency; (5) The agency determined that the lowest price reflects the total cost, including operation and support, of the product(s) or service(s) being acquired; and (6) The contracting officer documents the contract file describing the circumstances that justify the use of the lowest price technically acceptable source selection process. (d) Except for DoD, in accordance with section 880 of the John S. McCain National Defense Authorization Act for Fiscal Year 2019 (Pub. L. 115-232, 41 U.S.C. 3701 Note), contracting officers shall avoid, to the maximum extent practicable, using the lowest price technically acceptable source selection process in the case of a procurement that is predominantly for the acquisition of— (1) Information technology services, cybersecurity services, systems engineering and technical assistance services, advanced electronic testing, audit or audit readiness services, health care services and records, telecommunications devices and services, or other knowledge-based professional services; (2) Personal protective equipment; or (3) Knowledge-based training or logistics services in contingency operations or other operations outside the United States, including in Afghanistan or Iraq.