Federal Contracting Acronym

CAS

Cost Accounting Standards

Plain-English definition

Cost Accounting Standards (CAS) is a core federal acquisition term used in regulations, solicitations, and contract administration. Pricing and finance terms relate to cost principles, audits, and proposal buildup. Contractors use them when preparing BOEs, supporting incurred-cost submissions, and negotiating rates.

Why it matters

CAS noncompliance affects allowability and can block award on covered contracts.

Where you will see it

DCAA accounting system reviews, disclosure statements, and incurred-cost audits.

Example in context

When reviewing a solicitation, a contractor confirms how CAS is used in the notice, whether related clauses apply, and which internal subject-matter experts should validate the response.

Related acronyms

Source / references

FAR Part 30

Last updated September 19, 2026

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