FAR 52.230—[Reserved]

Cost Accounting Standards Notices and Certification.

FAR 52.230-1, Cost Accounting Standards Notices and Certification, is the solicitation provision that tells offerors when Cost Accounting Standards (CAS) may apply to a resulting contract and what the offeror must certify before award. It covers the CAS applicability notice, the requirement to submit a Disclosure Statement when CAS-covered work is expected, the warning that disclosure does not itself approve a practice, and the certification options for concurrent submission, prior submission, monetary exemption, and interim exemption. It also addresses special treatment for small businesses, foreign governments, and educational institutions, and it explains when the provision is used to determine whether the contract will be subject to full CAS coverage or modified coverage under the Disclosure and Consistency of Cost Accounting Practices clause. In practice, this provision is a gatekeeper: it helps the contracting officer determine whether the offeror is CAS-covered, exempt, or eligible for modified coverage, and it forces the offeror to make a formal, supportable representation about its status. Because the certifications can affect pricing, compliance obligations, and post-award administration, contractors must review their corporate structure, prior awards, and cost accounting period carefully before signing.

Cost Accounting Standards.

FAR 52.230-2, Cost Accounting Standards, is the core contract clause that implements CAS coverage for negotiated federal contracts that are not exempt. It tells the contractor when the CAS rules in 48 CFR Parts 9903 and 9904 apply, when a Disclosure Statement is required, how cost accounting practices must be consistently followed, when changes to those practices must be applied prospectively and disclosed, and when equitable adjustments or price/cost allowance adjustments are required. The clause also addresses interest on Government recoveries, dispute resolution under the Contract Disputes Act, Government access to records for compliance review, and mandatory flowdown to covered negotiated subcontracts. In practice, this clause is about preventing cost shifting and ensuring the Government pays only for costs measured under consistent, disclosed, and compliant accounting practices. It is especially important for contractors with multiple CAS-covered contracts, because a change in one practice can affect pricing, billing, and final settlement across several contracts and subcontracts.

Disclosure and Consistency of Cost Accounting Practices.

FAR 52.230-3, Disclosure and Consistency of Cost Accounting Practices, is the core CAS clause for certain negotiated contracts that are subject to Cost Accounting Standards. It addresses four major subjects: compliance with specific CAS standards on estimating, accumulating, and reporting costs; consistency in allocating costs incurred for the same purpose; accounting for unallowable costs; and the cost accounting period standard. It also requires disclosure of cost accounting practices for covered business units, protection of confidential disclosure statements when properly identified, and ongoing consistency in the contractor’s practices. The clause explains how changes to cost accounting practices may be proposed by either party, how those changes are negotiated and applied prospectively, and when an equitable adjustment is required if the Government finds the change desirable and not detrimental. It further provides for price or cost allowance adjustments, including interest, if noncompliance or inconsistent practices increase costs paid by the United States. Finally, it establishes dispute procedures under the Contract Disputes statute, audit/access rights for Government representatives, and mandatory flowdown of the clause to negotiated subcontracts with specified exceptions. In practice, this clause is both a compliance and pricing-risk provision: contractors must maintain disciplined CAS compliance and documentation, while contracting officers must monitor disclosures, changes, and potential cost impacts.

Disclosure and Consistency of Cost Accounting Practices-Foreign Concerns.

FAR 52.230-4 is the CAS clause used for foreign concerns and sets out the contractor’s obligations for cost accounting standards compliance, disclosure of cost accounting practices, consistency in applying those practices, equitable adjustments when practices change, remedies for noncompliance, dispute handling, audit/access rights, and flowdown to subcontracts. It ties the contract to CAS 401 and 402, and for CAS-covered contracts it also requires disclosure of cost accounting practices through the Disclosure Statement process. The clause explains how changes to cost accounting practices must be negotiated and applied prospectively, when the Government may recover increased costs plus interest, and how disagreements over compliance or adjustments are treated as contract disputes. It also gives the Government access to records needed to verify compliance and requires the contractor to flow the substance of the clause to applicable negotiated subcontracts, with important exceptions for other CAS coverage, the lower CAS threshold, and exempt subcontracts. In practice, this clause is about keeping cost accounting methods consistent, transparent, and fair so the Government pays only its proper share of costs and can recover overcharges if the contractor or a subcontractor departs from required CAS or established practices.

Cost Accounting Standards-Educational Institution.

FAR 52.230-5, Cost Accounting Standards—Educational Institution, is the CAS clause used when an educational institution’s business unit is subject to Cost Accounting Standards and the contract is not exempt. It tells the contractor when and how to disclose its cost accounting practices, including how it distinguishes direct from indirect costs and how it accumulates and allocates indirect costs, and it requires those practices to be applied consistently across covered contracts and subcontracts. The clause also addresses when changes in cost accounting practices must be made prospectively, including changes required by CAS itself and changes required by OMB Uniform Guidance accounting principles for educational institutions. It explains how contract price or cost allowance adjustments are handled when a change affects the contract, when a contractor fails to comply with CAS or consistent practice requirements, and how interest is calculated on increased costs paid by the Government. The clause further provides that disputes over CAS compliance and related cost adjustments are resolved under the Contract Disputes statute, authorizes Government examination of records related to compliance, and requires flowdown of the clause into negotiated subcontracts. In practice, this clause is important because it protects the Government from paying costs that are improperly measured, allocated, or shifted, while giving educational institutions a framework for maintaining compliant accounting systems and seeking equitable adjustments when required changes affect contract pricing.

Administration of Cost Accounting Standards.

FAR 52.230-6, Administration of Cost Accounting Standards, is the operational clause that tells contractors and the Government how to manage Cost Accounting Standards (CAS) issues after award. It covers key definitions used in CAS administration, including affected CAS-covered contracts or subcontracts, the cognizant Federal agency official (CFAO), desirable changes, fixed-price and flexibly-priced contracts, noncompliance, required changes, and unilateral changes. It then sets out the contractor’s notice obligations for cost accounting practice changes, including when to submit descriptions of changes, when to notify the CFAO after award, when advance notice is required before implementation, and when retroactive dates must be supported. The clause also addresses changes needed to correct noncompliance or to conform to disclosed practices, and it ties failure to provide notice to potential findings of noncompliance under the CAS clauses at FAR 52.230-2 through 52.230-5. In practice, this clause is the administrative roadmap for keeping CAS-covered contracts consistent, ensuring the Government can evaluate cost impacts, and preventing contractors from making accounting changes that shift costs unfairly or create disputes over increased costs. It matters both to contractors, who must manage accounting system changes carefully, and to contracting officials, who must track, review, and respond to those changes in a timely way.

Proposal Disclosure-Cost Accounting Practice Changes.

FAR 52.230-7 is a solicitation provision used to identify whether award of the contract will require a change in the offeror’s cost accounting practice and, if so, to make sure the proposal is priced on the correct basis. It addresses three main topics: the offeror’s duty to disclose whether the award will result in a required or unilateral cost accounting practice change, including unilateral changes requested to be treated as desirable changes; the requirement to prepare the price proposal using the changed practice for the portion of performance when that practice will apply; and the requirement to submit a description of the changed practice to both the Contracting Officer and the Cognizant Federal Agency Official as pricing support. The provision exists to prevent proposals from being built on an accounting method that will not actually govern performance, which could distort pricing, evaluation, and later cost accounting compliance. In practice, it helps the Government understand whether the offeror’s proposed price reflects an impending accounting change and gives the Government the information needed to evaluate the proposal consistently and document the basis for the price. It is especially important in cost-reimbursement, flexibly priced, or other contracts where cost accounting practices materially affect how costs are accumulated, allocated, and billed.