FAR Part 15 — Contracting by Negotiation — governs competitive proposals and the negotiated procurement process. Covers source selection (best value, LPTA), proposal evaluation, discussions, competitive range determination, and final proposal revisions (BAFOs). Most complex acquisitions use Part 15 procedures.
is a regulation concept federal contractors and grant writers run into across solicitations, regulations, and award filings
FAR Part 15 is part of the federal regulatory framework that governs procurement, performance, or compliance. For contractors, FAR Part 15 is not just background — it shapes solicitation language, evaluation criteria, source-selection authority, and what counts as compliant performance. Understanding when FAR Part 15 applies and (more importantly) when it doesn't apply is the difference between a proposal that's competitive within its actual constraint set and one that over-engineers compliance. Contracting officers use FAR Part 15 as common vocabulary, so reading their decisions, modifications, and source-selection memoranda gets easier when the regulation is in your working memory. Pair FAR Part 15 with the related terms above to see how it interacts with adjacent regulatory mechanisms.
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