Federal Contracting Acronym
DFARS
Defense Federal Acquisition Regulation Supplement
Plain-English definition
The Defense Federal Acquisition Regulation Supplement (DFARS) adds clauses and procedures on top of the FAR for Department of Defense acquisitions. It is where many defense contractors first encounter cybersecurity (including 252.204-7012), cost accounting, specialty contracting, and export-controlled technical data rules. DFARS clauses are binding when incorporated into a solicitation or contract; teams must distinguish DFARS requirements from civilian FAR-only work. Updates are published through the Defense Federal Acquisition Regulation Supplement process on Acquisition.gov.
Why it matters
Defense work often fails compliance reviews when teams apply civilian FAR habits to DFARS-driven solicitations—especially around cyber, safeguarding, and cost submissions.
Where you will see it
DoD RFPs, DD forms, contract clause lists, SPRS/NIST assessments, and DCAA audit requests on defense contracts.
Example in context
A contractor verifies whether 252.204-7012 applies, documents SPRS score evidence, and aligns the SSP with NIST SP 800-171 before award.