Cas covered contracts Archives

Defining CAS Coverage and What is a CAS Covered Contract

In its simplest sense, a CAS covered contract is any U.S. Government contract that does not meet an exemption from the Cost Accounting Standards (CAS) and includes the CAS clause (FAR 52-230-2 Cost Accounting Standards). While that sounds simple, what is not is navigating whether a contract meets CAS exemptions, and if it does not, knowing which CAS coverage is applicable to the contract; modified CAS or full CAS.

CAS applicability is one of the most common challenges faced by a growing U.S. Government contractor. Once a contractor begins performing CAS-covered contracts, its compliance profile changes significantly, bringing increased cost accounting requirements, disclosure obligations, and audit interest from the Defense Contract Audit Agency (DCAA).

Compliance with CAS can be complex and confusing to many Contractors, so it is crucial for Contractors to understand CAS applicability and determine whether they have any CAS Covered Contracts. It is also crucial, based on the type of CAS Coverage, to understand CAS implications in their organization. Many contractors lack the formal procedures and internal controls to effectively track their US Government Contract awards against CAS Coverage. This can result in major compliance challenges downstream that are expensive to untangle.

CAS Exemptions & Applicability

Cost Accounting Standards (CAS) apply to certain negotiated government contracts unless a specific exemption applies. Recent legislative changes have increased CAS applicability thresholds, making it more important than ever for contractors to evaluate each award individually.

A contract may be exempt from CAS if:

The contract is awarded to a small business.
The contract is awarded under sealed-bid procedures.
The award is for a commercial product or commercial service.
The price is set by law or regulation.
The award is a firm-fixed-price (FFP) contract awarded on the basis of adequate price competition without the submission of certified cost or pricing data.
The awardee is a foreign concern (subject only to CAS 401 and CAS 402 requirements).

If none of these exemptions apply, the contract may be subject to CAS coverage. Contractors should carefully evaluate each award against the applicable CAS thresholds and regulations in effect on the contract award date.

As contractors grow and pursue larger federal opportunities, they often accumulate multiple CAS-covered contracts. Losing track of which contracts are subject to CAS and the level of coverage applicable to each contract, can create significant compliance challenges.

The U.S. Government has rights under CAS-covered contracts that do not exist under exempt contracts, including the ability to seek contract price adjustments when a contractor fails to comply with applicable Cost Accounting Standards.

Because CAS applies at the contract level, every award should be evaluated independently. Maintaining a CAS tracking process is critical to ensuring compliance, understanding disclosure requirements, and avoiding costly downstream issues.

Important: Recent legislative and regulatory changes are increasing CAS applicability thresholds from $7.5M to $35M for modified CAS and from $50M to $100M for full CAS coverage, effective 6/30/26. Because these requirements continue to evolve, contractors should evaluate each award based on the regulations and thresholds in effect on the contract award date.

CAS Covered Contracts – Modified vs. Full CAS Coverage

When a contract is determined to be CAS-covered, the next step is determining whether it is subject to Modified CAS Coverage or Full CAS Coverage.

Modified CAS Coverage requires compliance with four Cost Accounting Standards:

CAS 401 – Consistency in Estimating, Accumulating, and Reporting Costs
CAS 402 – Consistency in Allocating Costs Incurred for the Same Purpose
CAS 405 – Accounting for Unallowable Costs
CAS 406 – Cost Accounting Period

Modified CAS Coverage generally applies to contractors that do not meet the thresholds for Full CAS Coverage.

Full CAS Coverage requires compliance with all 19 Cost Accounting Standards and carries additional disclosure and compliance requirements. Full CAS Coverage is generally triggered when a contractor exceeds the applicable CAS thresholds established by statute and regulation. Because these thresholds may change over time, contractors should evaluate coverage requirements based on the regulations and thresholds in effect on the contract award date.

A key requirement under Full CAS Coverage is the submission of a CASB Disclosure Statement (Form CASB DS-1). This document details a contractor's cost accounting practices and serves as the basis for demonstrating ongoing compliance with Cost Accounting Standards. In certain circumstances, contractors subject to Modified CAS Coverage may also be required to submit a Disclosure Statement.

Maintaining consistency between disclosed accounting practices and actual business operations is critical. Failure to comply with applicable CAS requirements can result in audit findings, cost impacts, and contract price adjustments by the U.S. Government.

CAS Exemptions Flowchart

A CAS coverage flowchart that illustrates applicability, coverage, exemptions, and CAS disclosure statement requirements can be found here.

A common misconception held by many contractors is that a contractor is either CAS-covered or not CAS-covered. While a simple way to think of it, it is important to recognize that CAS applies at a contract level, not at a contractor level. Every U.S. Government contract should be evaluated on its date of award to determine if and how CAS applies.

How Long Does CAS Coverage Last?

The CAS applicability on the date of the contract award is the applicability for the life of the contract. Hence, some contractors can have a combination of exempt, modified CAS, and full CAS covered contracts.

The CAS status of a contract or subcontract remains the same throughout its life. For example, if a contractor holds a contract subject to Modified CAS Coverage, and then receives a contract subject to Full CAS Coverage, the initial contract does not become subject to Full CAS, and remains subject to Modified CAS.

CAS Compliance Requirements

Cost Accounting Standards (CAS) compliance is essential for government contractors performing CAS-covered contracts. CAS was established to promote consistency, uniformity, and transparency in how contractors estimate, accumulate, allocate, and report costs to the U.S. Government. Below are several key CAS compliance requirements contractors should understand:

CAS Coverage Determination

Contractors should evaluate each contract individually to determine whether it is exempt from CAS or subject to Modified or Full CAS Coverage. CAS applicability is determined at the contract level and is based on the regulations and thresholds in effect on the contract award date.

Cost Accounting Practices

Contractors must establish and consistently follow documented cost accounting practices for estimating, accumulating, allocating, and reporting costs. Changes to these practices may require disclosure to the U.S. Government and could result in contract price adjustments.

Disclosure Statement Requirements

Contractors subject to Full CAS Coverage are generally required to submit a CASB Disclosure Statement (Form CASB DS-1), which documents their cost accounting practices. In certain circumstances, contractors under Modified CAS Coverage may also be required to submit a Disclosure Statement. Contractors must ensure their actual practices remain consistent with their disclosed practices.

Consistent Cost Allocation

CAS requires contractors to consistently allocate costs between direct and indirect cost pools. Costs incurred for the same purpose under similar circumstances must be treated consistently throughout the organization to prevent inequitable cost charging.

Recordkeeping and Audit Readiness

Contractors must maintain sufficient documentation to support their accounting practices, indirect rate structures, cost allocations, and contract billings. These records should be readily available to support government audits and compliance reviews.

Understanding CAS Exemptions

Not all government contracts are subject to CAS. Certain contracts may qualify for exemptions based on factors such as contractor size, contract type, competition, or the nature of the goods or services being provided. Properly identifying exemptions is an important part of maintaining compliance.

Failure to comply with CAS requirements can result in audit findings, contract price adjustments, increased government scrutiny, and other compliance challenges. Maintaining strong accounting systems, documented procedures, and consistent cost accounting practices is essential to successfully managing CAS-covered contracts.

Making Cost Accounting Practice Changes Under CAS

Once a contractor begins performing CAS-covered contracts, it must monitor its cost accounting practices for changes that require disclosure to the U.S. Government pursuant to FAR 52.230-3 Disclosure and Consistency of Cost Accounting Practices. Contractors that fail to realize this significant requirement, applicable under both modified and full CAS covered contracts, may make a change that results in increased cost to the U.S. Government for which it will not pay.

Generally, the U.S. Government will not pay increased costs due to changes in a contractor’s cost accounting practices. One of the easiest, and expensive, ways to get in trouble with CAS covered contracts is to make changes to cost accounting practices that seem benign but change the way the U.S. Government participates in cost. Examples of common changes in cost accounting practice that are natural for a contractor but impact cost allocation include:

Changing the treatment of a cost from indirect to direct (e.g., program management historically treated as overhead, but growth has resulted in a need to have dedicated program managers who now charge direct)
Changing the treatment of a cost from direct to indirect
Facilities allocation changing from headcount to square footage
Home office allocations change from revenue to 3 factor formula

NOTE: Recent changes in legislation now exempt firm fixed price contracts from cost impacts resulting from changes in cost accounting practice.

Impact on CAS Covered Contracts

All changes to cost accounting practice are likely to result in some cost impact to CAS covered contracts. Changes to cost accounting practice require disclosure prior to adopting them. In most instances the U.S. Government will require a contractor to submit a cost impact proposal, either through a Detailed Cost Impact (DCI) or General Dollar Magnitude (GDM).

Not realizing this requirement can result in significant cost impacts to the U.S. Government whereby a contractor may have to pay large sums of money back to the U.S. Government for years of undisclosed changes in cost accounting practice. This is a massive difference from commercial and non-CAS covered contracts. In its simplest sense, once a contractor is CAS covered, it must carefully evaluate, disclose, and coordinate changes to its cost accounting practices before implementation.

Monitor Your Contracts and Protect Your Organization!

If you are a contractor, it is important to evaluate every award for CAS applicability and maintain a CAS tracker so that you know the CAS applicability at the contract level. And it is something every executive team, not just accounting and contracts, needs to be familiar with. Changes in organizations bring changes to cost accounting; and those changes need to be considered prior to making the change. If the entire organization is not aware of these risks, it can easily result in changes that cost the contractor money.

Need Help Navigating CAS Compliance? We're Here to Support You.

Winning and managing CAS-covered contracts can bring major opportunities—but also complex requirements. Whether you're preparing for a new award, updating your cost accounting practices, or responding to an audit, our team understands what it takes to stay on track with CAS compliance.

At RKI, we work with government contractors of all sizes to evaluate readiness, strengthen internal systems, and support disclosure requirements. If you're unsure where to start or need a second set of eyes, we’re here to help you move forward with clarity and confidence.

Don’t let CAS compliance slow you down. Let’s make compliance a strength, not a stressor. Contact us today to get started and ensure your compliance needs are met with precision and expertise.

Frequently Asked Questions

What is a CAS covered contract?

A CAS covered contract is a U.S. Government contract that is subject to the Cost Accounting Standards (CAS) and does not qualify for a CAS exemption. CAS-covered contracts require contractors to follow specific cost accounting rules and maintain consistency in how costs are estimated, accumulated, allocated, and reported.

What is Modified CAS Coverage?

Modified CAS Coverage requires compliance with four Cost Accounting Standards: CAS 401, CAS 402, CAS 405, and CAS 406. It is generally applicable to contractors that do not meet the requirements for Full CAS Coverage but are performing CAS-covered contracts.

What is Full CAS Coverage?

Full CAS Coverage requires compliance with all 19 Cost Accounting Standards and carries additional disclosure and compliance obligations. Contractors subject to Full CAS Coverage are typically required to submit a CASB Disclosure Statement outlining their cost accounting practices.

Does CAS apply to small businesses?

No. Contracts awarded to qualifying small businesses are generally exempt from Cost Accounting Standards. However, contractors should evaluate each award individually to determine whether an exemption applies.

How long does CAS Coverage last?

CAS applicability is determined on the date of contract award and remains in effect for the life of the contract. A contract that is exempt, modified CAS-covered, or full CAS-covered at award generally retains that status throughout its performance period.

What is a CASB Disclosure Statement?

A CASB Disclosure Statement (Form CASB DS-1) is a document that outlines a contractor's cost accounting practices. It provides transparency to the U.S. Government and serves as the basis for evaluating compliance with Cost Accounting Standards. Contractors subject to Full CAS Coverage are generally required to submit and maintain a Disclosure Statement.

What happens if a contractor violates CAS?

Failure to comply with Cost Accounting Standards can result in audit findings, contract price adjustments, increased government scrutiny, and potential repayment of costs to the U.S. Government. Maintaining documented accounting practices and monitoring cost accounting changes are essential to reducing compliance risk.

Can a contractor have both CAS-covered and CAS-exempt contracts?

Yes. CAS applies at the contract level, not the contractor level. A contractor may simultaneously hold CAS-exempt contracts, contracts subject to Modified CAS Coverage, and contracts subject to Full CAS Coverage. Each contract should be evaluated independently based on the rules applicable at the time of award.