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FAR and DFARS › FAR Part 43: Contract Modifications › Subpart 43.1

FAR 43.104 Notification of contract changes.

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 says that if a contractor believes the Government has changed or may change the contract without a written, signed change order from the contracting officer, the contractor must notify the Government in writing as soon as possible. This matters because it lets the Government evaluate the alleged change, either confirm it, cancel it, or state that no change occurred, and it ties to the Notification of Changes clause at 52.243-7.

Applies to: Contractors who believe the Government has changed or may change their contract without a written, signed contracting officer change

What it requires

  • Notify the Government in writing as soon as possible when the contractor considers that the Government has effected or may effect a contract change not identified in writing and signed by the contracting officer
  • Notify the Government promptly of any Government conduct the contractor considers a change to the contract, as required by the clause at 52.243-7

Key terms: change · contracting officer · Notification of Changes · 52.243-7 · countermand

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

The text

(a) When a contractor considers that the Government has effected or may effect a change in the contract that has not been identified as such in writing and signed by the contracting officer, it is necessary that the contractor notify the Government in writing as soon as possible. This will permit the Government to evaluate the alleged change and (1) confirm that it is a change, direct the mode of further performance, and plan for its funding; (2) countermand the alleged change; or (3) notify the contractor that no change is considered to have occurred.

(b) The clause at 52.243-7, Notification of Changes, which is prescribed in 43.107, (1) incorporates the policy expressed in paragraph (a) above; (2) requires the contractor to notify the Government promptly of any Government conduct that the contractor considers a change to the contract, and (3) specifies the responsibilities of the contractor and the Government with respect to such notifications.

Sections it refers to

← 43.103 Types of contract modifications. · 43.105 Availability of funds. →

Rule changes for FAR Part 43

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

FAR 43.104 Notification of contract changes · SpendQuery