FAR 52.230-6—Administration of Cost Accounting Standards.
Plain-English Summary
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.
Key Rules
CAS Definitions Control
The clause begins by defining the terms that drive CAS administration, such as affected CAS-covered contract, CFAO, desirable change, fixed-price contracts, flexibly-priced contracts, noncompliance, required change, and unilateral change. These definitions determine which contracts are affected, what type of change is being made, and what cost-impact rules apply.
Notice of Practice Changes
Contractors must submit a description of any cost accounting practice change to the CFAO, including Disclosure Statement revisions if applicable, and may also submit a statement that the cost impact is immaterial. If the contractor fails to give the required notice, the CFAO may treat the change as a failure to follow the applicable CAS consistency or disclosure clause.
Award-Triggered Notification
If a change description was submitted for a change that depends on a contract award, the contractor must notify the CFAO within 15 days after the award occurs. This ensures the Government knows when a contingent change becomes active and can evaluate its effect on covered contracts.
Advance Notice Before Implementation
For certain required or proposed changes, the contractor must submit the change description at least 60 days before implementation, unless the CFAO and contractor agree to another date. This advance notice gives the Government time to review the change, assess compliance, and determine cost consequences.
Retroactive Date Support
When a proposed change includes a retroactive date, the contractor must provide supporting rationale. Retroactive application is not automatic; the contractor must justify why the earlier effective date is appropriate and consistent with CAS requirements.
Corrections for Noncompliance
If the change is needed to correct a failure to comply with CAS or to follow a disclosed practice, the contractor must submit the description within the time required by the clause. These corrective changes are treated differently from ordinary voluntary changes because they address an existing compliance problem.
Change Categories Matter
The clause distinguishes between desirable changes, required changes, and unilateral changes. That distinction affects whether the Government may object, whether increased costs are allowed, and how the change is administered across affected CAS-covered contracts and subcontracts.
Responsibilities
Contractor
Identify whether a cost accounting practice change is subject to CAS administration, prepare and submit the required description and any Disclosure Statement revisions, notify the CFAO within the required timeframes, support any retroactive date, and ensure changes are implemented only after required notice is given.
Cognizant Federal Agency Official (CFAO)
Receive and review contractor notices of cost accounting practice changes, determine whether a change is desirable, required, unilateral, or corrective, evaluate whether a stated cost impact is immaterial, and administer CAS compliance and cost impact issues for the contractor.
Government/Agency
Use the clause to monitor CAS-covered contracts and subcontracts, assess whether changes affect Government costs, and enforce consistency and disclosure requirements through the applicable CAS clauses and contract administration process.
Subcontractor
When subject to CAS, follow the same notice and consistency requirements for cost accounting practice changes and provide information needed for administration through the prime or cognizant official as applicable.
Practical Implications
Contractors need a formal internal process for identifying accounting practice changes before they are implemented, because late notice can turn an otherwise permissible change into a compliance issue.
The 60-day and 15-day deadlines are easy to miss, especially when a change is tied to award timing or when implementation is driven by system updates, mergers, or policy revisions.
A change labeled as immaterial still needs careful support; unsupported immateriality claims can create disputes if the Government later finds a measurable cost impact.
The distinction between fixed-price and flexibly-priced contracts matters because CAS cost impacts are often allocated differently depending on contract type and whether final payment is based on actual costs.
Contracting officers and CFAOs should watch for changes that appear voluntary but are actually required to maintain compliance, because the classification affects whether the Government can challenge the change and how increased costs are handled.
Official Regulatory Text
As prescribed in 30.201-4 (d)(1) , insert the following clause: Administration of Cost Accounting Standards (June 2010) For the purpose of administering the Cost Accounting Standards (CAS) requirements under this contract, the Contractor shall take the steps outlined in paragraphs (b) through (i) and (k) through (n) of this clause: (a) Definitions. As used in this clause- Affected CAS-covered contract or subcontract means a contract or subcontract subject to CAS rules and regulations for which a Contractor or subcontractor- (1) Used one cost accounting practice to estimate costs and a changed cost accounting practice to accumulate and report costs under the contract or subcontract; or (2) Used a noncompliant practice for purposes of estimating or accumulating and reporting costs under the contract or subcontract. Cognizant Federal agency official (CFAO) means the Contracting Officer assigned by the cognizant Federal agency to administer the CAS. Desirable change means a compliant change to a Contractor’s established or disclosed cost accounting practices that the CFAO finds is desirable and not detrimental to the Government and is, therefore, not subject to the no increased cost prohibition provisions of CAS-covered contracts and subcontracts affected by the change. Fixed-price contracts and subcontracts means- (1) Fixed-price contracts and subcontracts described at FAR 16.202 , 16.203 , (except when price adjustments are based on actual costs of labor or material, described at 16.203-1 (a)(2)), and 16.207 ; (2) Fixed-price incentive contracts and subcontracts where the price is not adjusted based on actual costs incurred (FAR subpart 16.4 ); (3) Orders issued under indefinite-delivery contracts and subcontracts where final payment is not based on actual costs incurred (FAR subpart 16.5 ); and (4) The fixed-hourly rate portion of time-and-materials and labor-hours contracts and subcontracts (FAR subpart 16.6 ). Flexibly-priced contracts and subcontracts means- (1) Fixed-price contracts and subcontracts described at FAR 16.203-1 (a)(2), 16.204 , 16.205 , and 16.206 ; (2) Cost-reimbursement contracts and subcontracts (FAR subpart 16.3 ); (3) Incentive contracts and subcontracts where the price may be adjusted based on actual costs incurred (FAR subpart 16.4 ); (4) Orders issued under indefinite-delivery contracts and subcontracts where final payment is based on actual costs incurred (FAR subpart 16.5 ); and (5) The materials portion of time-and-materials contracts and subcontracts (FAR subpart 16.6 ). Noncompliance means a failure in estimating, accumulating, or reporting costs to- (1) Comply with applicable CAS; or (2) Consistently follow disclosed or established cost accounting practices. Required change means- (1) A change in cost accounting practice that a Contractor is required to make in order to comply with applicable Standards, modifications or interpretations thereto, that subsequently become applicable to existing CAS-covered contracts or subcontracts due to the receipt of another CAS-covered contract or subcontract; or (2) A prospective change to a disclosed or established cost accounting practice when the CFAO determines that the former practice was in compliance with applicable CAS and the change is necessary for the Contractor to remain in compliance. Unilateral change means a change in cost accounting practice from one compliant practice to another compliant practice that a Contractor with a CAS-covered contract(s) or subcontract(s) elects to make that has not been deemed a desirable change by the CFAO and for which the Government will pay no aggregate increased costs. (b) Submit to the CFAO a description of any cost accounting practice change as outlined in paragraphs (b)(1) through (3) of this clause (including revisions to the Disclosure Statement, if applicable), and any written statement that the cost impact of the change is immaterial. If a change in cost accounting practice is implemented without submitting the notice required by this paragraph, the CFAO may determine the change to be a failure to follow paragraph (a)(2) of the clause at FAR 52.230-2 , Cost Accounting Standards; paragraph (a)(4) of the clause at FAR 52.230-3 , Disclosure and Consistency of Cost Accounting Practices; paragraph (a)(4) of the clause at FAR 52.230-4 , Disclosure and Consistency of Cost Accounting Practices–Foreign Concerns; or paragraph (a)(2) of the clause at FAR 52.230-5 , Cost Accounting Standards–Educational Institution. (1) When a description has been submitted for a change in cost accounting practice that is dependent on a contact award and that contract is subsequently awarded, notify the CFAO within 15 days after such award. (2) For any change in cost accounting practice not covered by (b)(1) of this clause that is required in accordance with paragraphs (a)(3) and (a)(4)(i) of the clause at FAR 52.230-2 ; or paragraphs (a)(3), (a)(4)(i), or (a)(4)(iv) of the clause at FAR 52.230-5 ; submit a description of the change to the CFAO not less than 60 days (or such other date as may be mutually agreed to by the CFAO and the Contractor) before implementation of the change. (3) For any change in cost accounting practices proposed in accordance with paragraph (a)(4)(ii) or (iii) of the clauses at FAR 52.230-2 and FAR 52.230-5 ; or with paragraph (a)(3) of the clauses at FAR 52.230-3 and FAR 52.230-4 , submit a description of the change not less than 60 days (or such other date as may be mutually agreed to by the CFAO and the Contractor) before implementation of the change. If the change includes a proposed retroactive date submit supporting rationale. (4) Submit a description of the change necessary to correct a failure to comply with an applicable CAS or to follow a disclosed practice (as contemplated by paragraph (a)(5) of the clause at FAR 52.230-2 and FAR 52.230-5 ; or by paragraph (a)(4) of the clauses at FAR 52.230-3 and FAR 52.230-4 )- (i) Within 60 days (or such other date as may be mutually agreed to by the CFAO and the Contractor) after the date of agreement with the CFAO that there is a noncompliance; or (ii) In the event of Contractor disagreement, within 60 days after the CFAO notifies the Contractor of the determination of noncompliance. (c) When requested by the CFAO, submit on or before a date specified by the CFAO- (1) A general dollar magnitude (GDM) proposal in accordance with paragraph (d) or (g) of this clause. The Contractor may submit a detailed cost-impact (DCI) proposal in lieu of the requested GDM proposal provided the DCI proposal is in accordance with paragraph (e) or (h) of this clause; (2) A detailed cost-impact (DCI) proposal in accordance with paragraph (e) or (h) of this clause; (3) For any request for a desirable change that is based on the criteria in FAR 30.603-2 (b)(3)(ii), the data necessary to demonstrate the required cost savings; and (4) For any request for a desirable change that is based on criteria other than that in FAR 30.603-2 (b)(3)(ii), a GDM proposal and any other data necessary for the CFAO to determine if the change is a desirable change. (d) For any change in cost accounting practice subject to paragraph (b)(1), (b)(2), or (b)(3) of this clause, the GDM proposal shall- (1) ) Calculate the cost impact in accordance with paragraph (f) of this clause; (2) Use one or more of the following methods to determine the increase or decrease in cost accumulations: (i) A representative sample of affected CAS-covered contracts and subcontracts. (ii) The change in indirect rates multiplied by the total estimated base computed for each of the following groups: (A) Fixed-price contracts and subcontracts. (B) Flexibly-priced contracts and subcontracts. (iii) Any other method that provides a reasonable approximation of the total increase or decrease in cost accumulations for all affected fixed-price and flexibly-priced contracts and subcontracts; (3) Use a format acceptable to the CFAO but, as a minimum, include the following data: (i) The estimated increase or decrease in cost accumulations by Executive agency, including any impact the change may have on contract and subcontract incentives, fees, and profits, for each of the following groups: (A) Fixed-price contracts and subcontracts. (B) Flexibly-priced contracts and subcontracts. (ii) For unilateral changes, the increased or decreased costs to the Government for each of the following groups: (A) Fixed-price contracts and subcontracts. (B) Flexibly-priced contracts and subcontracts; and (4) When requested by the CFAO, identify all affected CAS-covered contracts and subcontracts. (e) For any change in cost accounting practice subject to paragraph (b)(1), (b)(2), or (b)(3) of this clause, the DCI proposal shall- (1) Show the calculation of the cost impact in accordance with paragraph (f) of this clause; (2) Show the estimated increase or decrease in cost accumulations for each affected CAS-covered contract and subcontract unless the CFAO and Contractor agree to include- (i) Only those affected CAS-covered contracts and subcontracts having an estimate to complete exceeding a specified amount; and (ii) An estimate of the total increase or decrease in cost accumulations for all affected CAS-covered contracts and subcontracts, using the results in paragraph (e)(2)(i) of this clause; (3) Use a format acceptable to the CFAO but, as a minimum, include the information in paragraph (d)(3) of this clause; and (4) When requested by the CFAO, identify all affected CAS-covered contracts and subcontracts. (f) For GDM and DCI proposals that are subject to the requirements of paragraph (d) or (e) of this clause, calculate the cost impact as follows: (1) The cost impact calculation shall include all affected CAS-covered contracts and subcontracts regardless of their status (i.e., open or closed) or the fiscal year in which the costs were incurred (i.e., whether or not the final indirect rates have been established). (2) For unilateral changes- (i) Determine the increased or decreased cost to the Government for flexibly-priced contracts and subcontracts as follows: (A) When the estimated cost to complete using the changed practice exceeds the estimated cost to complete using the current practice, the difference is increased cost to the Government. (B) When the estimated cost to complete using the changed practice is less than the estimated cost to complete using the current practice, the difference is decreased cost to the Government; (ii) Determine the increased or decreased cost to the Government for fixed-priced contracts and subcontracts as follows: (A) When the estimated cost to complete using the changed practice is less than the estimated cost to complete using the current practice, the difference is increased cost to the Government. (B) When the estimated cost to complete using the changed practice exceeds the estimated cost to complete using the current practice, the difference is decreased cost to the Government; (iii) Calculate the total increase or decrease in contract and subcontract incentives, fees, and profits associated with the increased or decreased costs to the Government in accordance with 48 CFR 9903.306(c) . The associated increase or decrease is based on the difference between the negotiated incentives, fees, and profits and the amounts that would have been negotiated had the cost impact been known at the time the contracts and subcontracts were negotiated; and (iv) Calculate the increased cost to the Government in the aggregate. (3) For equitable adjustments for required or desirable changes- (i) Estimated increased cost accumulations are the basis for increasing contract prices, target prices and cost ceilings; and (ii) Estimated decreased cost accumulations are the basis for decreasing contract prices, target prices and cost ceilings. (g) For any noncompliant cost accounting practice subject to paragraph (b)(4) of this clause, prepare the GDM proposal as follows: (1) Calculate the cost impact in accordance with paragraph (i) of this clause. (2) Use one or more of the following methods to determine the increase or decrease in contract and subcontract prices or cost accumulations, as applicable: (i) A representative sample of affected CAS-covered contracts and subcontracts. (ii) When the noncompliance involves cost accumulation the change in indirect rates multiplied by the applicable base for only flexibly-priced contracts and subcontracts. (iii) Any other method that provides a reasonable approximation of the total increase or decrease. (3) Use a format acceptable to the CFAO but, as a minimum, include the following data: (i) The total increase or decrease in contract and subcontract price and cost accumulations, as applicable, by Executive agency, including any impact the noncompliance may have on contract and subcontract incentives, fees, and profits, for each of the following groups: (A) Fixed-price contracts and subcontracts. (B) Flexibly-priced contracts and subcontracts. (ii) The increased or decreased cost to the Government for each of the following groups: (A) Fixed-price contracts and subcontracts. (B) Flexibly-priced contracts and subcontracts. (iii) The total overpayments and underpayments made by the Government during the period of noncompliance. (4) When requested by the CFAO, identify all CAS-covered contracts and subcontracts. (h) For any noncompliant practice subject to paragraph (b)(4) of this clause, prepare the DCI proposal as follows: (1) Calculate the cost impact in accordance with paragraph (i) of this clause. (2) Show the increase or decrease in price and cost accumulations for each affected CAS-covered contract and subcontract unless the CFAO and Contractor agree to- (i) Include only those affected CAS-covered contracts and subcontracts having- (A) Contract and subcontract values exceeding a specified amount when the noncompliance involves estimating costs; and (B) Incurred costs exceeding a specified amount when the noncompliance involves accumulating costs; and (ii) Estimate the total increase or decrease in price and cost accumulations for all affected CAS-covered contracts and subcontracts using the results in paragraph (h)(2)(i) of this clause. (3) Use a format acceptable to the CFAO that, as a minimum, include the information in paragraph (g)(3) of this clause. (4) When requested by the CFAO, identify all CAS-covered contracts and subcontracts. (i) For GDM and DCI proposals that are subject to the requirements of paragraph (g) or (h) of this clause, calculate the cost impact as follows: (1) The cost impact calculation shall include all affected CAS-covered contracts and subcontracts regardless of their status ( i.e., open or closed) or the fiscal year in which the costs are incurred (i.e., whether or not the final indirect rates have been established). (2) For noncompliances that involve estimating costs, determine the increased or decreased cost to the Government for fixed-price contracts and subcontracts as follows: (i) When the negotiated contract or subcontract price exceeds what the negotiated price would have been had the Contractor used a compliant practice, the difference is increased cost to the Government. (ii) When the negotiated contract or subcontract price is less than what the negotiated price would have been had the Contractor used a compliant practice, the difference is decreased cost to the Government. (3) For noncompliances that involve accumulating costs, determine the increased or decreased cost to the Government for flexibly-priced contracts and subcontracts as follows: (i) When the costs that were accumulated under the noncompliant practice exceed the costs that would have been accumulated using a compliant practice (from the time the noncompliant practice was first implemented until the date the noncompliant practice was replaced with a compliant practice), the difference is increased cost to the Government. (ii) When the costs that were accumulated under the noncompliant practice are less than the costs that would have been accumulated using a compliant practice (from the time the noncompliant practice was first implemented until the date the noncompliant practice was replaced with a compliant practice), the difference is decreased cost to the Government. (4) Calculate the total increase or decrease in contract and subcontracts incentives, fees, and profits associated with the increased or decreased cost to the Government in accordance with 48 CFR 9903.306(c) . The associated increase or decrease is based on the difference between the negotiated incentives, fees, and profits and the amounts that would have been negotiated had the Contractor used a compliant practice. (5) Calculate the increased cost to the Government in the aggregate. (j) If the Contractor does not submit the information required by paragraph (b) or (c) of this clause within the specified time, or any extension granted by the CFAO, the CFAO may take one or both of the following actions: (1) Withhold an amount not to exceed 10 percent of each subsequent amount payment to the Contractor’s affected CAS-covered contracts, (up to the estimated general dollar magnitude of the cost impact), until such time as the Contractor provides the required information to the CFAO. (2) Issue a final decision in accordance with FAR 33.211 and unilaterally adjust the contract(s) by the estimated amount of the cost impact. (k) Agree to- (1) Contract modifications to reflect adjustments required in accordance with paragraph (a)(4)(ii) or (a)(5) of the clauses at FAR 52.230-2 and 52.230-5 ; or with paragraph (a)(3)(i) or (a)(4) of the clauses at FAR 52.230-3 and FAR 52.230-4 ; and (2) Repay the Government for any aggregate increased cost paid to the Contractor. (l) For all subcontracts subject to the clauses at FAR 52.230-2 , 52.230-3 , 52.230-4 , or 52.230-5 - (1) So state in the body of the subcontract, in the letter of award, or in both (do not use self-deleting clauses); (2) Include the substance of this clause in all negotiated subcontracts; and (3) Within 30 days after award of the subcontract, submit the following information to the Contractor’s CFAO: (i) Subcontractor’s name and subcontract number. (ii) Dollar amount and date of award. (iii) Name of Contractor making the award. (m) Notify the CFAO in writing of any adjustments required to subcontracts under this contract and agree to an adjustment to this contract price or estimated cost and fee. The Contractor shall- (1) Provide this notice within 30 days after the Contractor receives the proposed subcontract adjustments; and (2) Include a proposal for adjusting the higher-tier subcontract or the contract appropriately. (n) For subcontracts containing the clause or substance of the clause at FAR 52.230-2 , FAR 52.230-3 , FAR 52.230-4 , or FAR 52.230-5 , require the subcontractor to comply with all Standards in effect on the date of award or of final agreement on price, as shown on the subcontractor’s signed Certificate of Current Cost or Pricing Data, whichever is earlier. (End of clause)