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FAR and DFARS › FAR Part 1: Federal Acquisition Regulations System › Subpart 1.5

FAR 1.501-1 Definition.

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 defines what counts as a 'significant revision' to the FAR System. A revision is significant if it changes the substantive meaning of FAR coverage and has a significant cost or administrative impact on contractors or offerors, or a significant effect beyond the issuing agency's internal procedures. Editorial or stylistic changes with no impact on basic meaning are not significant.

Applies to: Revisions to the FAR System

Key terms: Significant revisions · FAR System · substantive meaning · significant cost or administrative impact · offerors

Written by AI from this section's text. A guide, not legal advice: the text below rules.

The text

Significant revisions, as used in this subpart, means revisions that alter the substantive meaning of any coverage in the FAR System and which have a significant cost or administrative impact on contractors or offerors, or a significant effect beyond the internal operating procedures of the issuing agency. This expression, for example, does not include editorial, stylistic, or other revisions that have no impact on the basic meaning of the coverage being revised.

← 1.501 Solicitation of agency and public views. · 1.501-2 Opportunity for public comments. →

Rule changes for FAR Part 1

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.

FAR 1.501-1 Definition · SpendQuery