GAO Green Book
The federal internal-control standard for designing, implementing, operating, and evaluating controls over operations, reporting, and compliance. It supplies auditable criteria for federal entities; it is not an organizational certification.
2025 Revision · US Government Accountability Office · published 2025-05-15
00Answer
01Standing
Authority and version facts, with a parsed public catalog when available; no tenant blueprint or executable evidence method is activated.
GAO Green Book is tracked in the registry — authority, version ledger, verification — and nothing else is modelled for it yet. Import its catalog to begin.
GAO publishes the complete current standard; pin the 2025 Revision and its fiscal-year-2026 effective guidance before normalization.
02Registry record
- Registry status
- Planned · namedTracked metadata: we name the regime and monitor its issuing authority. No control or requirement model is implemented.
- Control units
- Not on record — no catalog ingested and no authority-published count cited.
- Control families
- Control environment · Risk assessment · Control activities · Information and communication · Monitoring
- Applies to
- federal · government audit · public sector · US
- Verification
- Primary — the issuing body's own page was read and states this version. checked 2026-08-28
03Version ledger
| 2014 Revision | Superseded | 2014-09-10 |
| 2025 Revision | Current edition · supersedes 2014 Revision | 2025-05-15 |
05Change history
06Related frameworks
- GAO FISCAMJune 2026 (GAO-26-108633)
Also applies to federal · The federal audit methodology for assessing the design, implementation, and operating effectiveness of information-system controls under generally accepted government auditing standards. It is audit guidance, not an agency authorization or certification.
Commonly assessed together · The widely used internal-control framework for operations, reporting, and compliance, including internal control over financial reporting. It supplies evaluation criteria; it is not a certification and SOX does not create a fixed IT-control catalog.
- GAO Yellow Book (GAGAS)2024 Revision
Also applies to government audit · Generally accepted government auditing standards for financial audits, attestation engagements, reviews, and performance audits. They govern auditor and audit-organization quality; they do not certify the entity being audited.
- FISMAFederal Information Security Modernization Act of 2014
Also applies to federal · The Federal Information Security Modernization Act of 2014 — the statutory authority a federal RFP names, implemented operationally through NIST SP 800-53 and the NIST Cybersecurity Framework, both already tracked as their own registry entries.