FAR 4.1800—Scope of subpart.
Plain-English Summary
FAR 4.1800 is a scope provision that explains what this subpart is about and how it fits into the broader federal identification framework. It states that the subpart prescribes policies and procedures for identifying commercial and government entities, primarily through the Commercial and Government Entity (CAGE) code system. It also explains the main uses of CAGE codes in federal procurement: exchanging data with other contracting activities, including contract administration and contract payment offices; exchanging data with other systems that need a unique contractor entity identifier; and identifying when offerors are owned or controlled by another entity. Finally, it points readers to the unique entity identifier requirements in FAR 4.605 and the solicitation provisions at 52.204-6 and 52.204-7, making clear that the unique entity identifier is a separate identifier from the CAGE code. In practice, this section matters because it tells contracting personnel and contractors which identifier is being used for which purpose, helps prevent confusion between CAGE codes and the unique entity identifier, and supports accurate data sharing, payment processing, and responsibility determinations across federal systems.
Key Rules
Subpart covers entity identification
This subpart establishes policies and procedures for identifying commercial and government entities. Its focus is on how the government recognizes and tracks entities in procurement and related administrative systems.
CAGE code supports data exchange
The CAGE code system may be used to exchange data with other contracting activities, including contract administration and contract payment activities. This helps agencies connect procurement records across offices and systems.
CAGE code links to other systems
CAGE codes may also be used to exchange data with other systems that require unique identification of a contractor entity. The rule recognizes that multiple government systems may need a common entity reference.
CAGE code helps identify control relationships
The CAGE code system may be used to identify when offerors are owned or controlled by another entity. This can be relevant to responsibility, affiliation, and other procurement analyses.
Unique entity identifier is separate
The section expressly distinguishes the unique entity identifier from the CAGE code. For the unique entity identifier, users must look to FAR 4.605 and the provisions at 52.204-6 and 52.204-7.
Responsibilities
Contracting Officers
Use the entity identification framework correctly when preparing solicitations, evaluating offerors, and coordinating with administration and payment activities. They must distinguish between CAGE code use and the separate unique entity identifier requirements.
Contract Administration Activities
Use CAGE code information as needed to exchange data with procurement and administrative systems and to maintain consistent entity records across contract administration functions.
Contract Payment Activities
Use CAGE code-based data exchanges where needed to support accurate payment processing and linkage of payment records to the correct contractor entity.
Offerors/Contractors
Provide accurate entity identification information and understand that CAGE code and unique entity identifier are different identifiers. They should ensure their registration and proposal information align with the identifiers required by the solicitation and applicable FAR provisions.
Agency Systems and Other Government Systems
Accept and use CAGE code information when a system requires unique identification of a contractor entity, and maintain consistency in how entities are identified across systems.
Practical Implications
This section is mainly a roadmap: it tells users where to look for the actual unique entity identifier rules and reminds them not to treat CAGE codes and UEIs as the same thing.
A common pitfall is using the wrong identifier in solicitations, award documents, or system records, which can create data mismatches or delay award and payment processing.
Contracting personnel should verify which identifier a particular process requires before entering or sharing entity data, especially when coordinating among procurement, administration, and payment systems.
Because CAGE codes may be used to identify ownership or control relationships, users should not assume the code is only an administrative label; it can have substantive procurement implications.
Contractors should keep their registration and entity information current so that government systems can correctly match records across contracting, administration, and payment functions.
Official Regulatory Text
(a) This subpart prescribes policies and procedures for identification of commercial and government entities. The Commercial and Government Entity (CAGE) code system may be used, among other things, to– (1) Exchange data with another contracting activity, including contract administration activities and contract payment activities. (2) Exchange data with another system that requires the unique identification of a contractor entity; or (3) Identify when offerors are owned or controlled by another entity. (b) For information on the unique entity identifier, which is a different identifier, see 4.605 and the provisions at 52.204-6 , Unique Entity Identifier, and 52.204-7 , System for Award Management.