Requirements & evidence
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.
- Edition on record
- 2025 Revision
- Issuing authority
- US Government Accountability Office (opens in a new tab)
- Edition published
- Source last checked
Understand the scope
What the framework covers.
The library records this framework for federal, government audit, public sector, across US. The issuing authority determines applicability; your assessment scope should identify the organization, systems, services, and edition being assessed.
Areas of requirement
- Control environment
- Risk assessment
- Control activities
- Information and communication
- Monitoring
The library tracks the authority and edition. A normalized requirement catalog is not available for this framework, so a requirement count is not stated here.
Source access and licensing
GAO publishes the complete current standard; pin the 2025 Revision and its fiscal-year-2026 effective guidance before normalization.
Prepare with context
The evidence behind
the requirements.
Evidence needs to demonstrate how a requirement is met within the assessment scope. Keep the source requirement, collection context, responsible owner, review decision, and period of applicability together.
A framework-specific collection workflow has not been activated. The reference material on this page can inform scoping and preparation; it does not establish evidence collection or assessment readiness.
ControlFrame availability
Framework reference available
Authority and version facts, with a parsed public catalog when available; no tenant blueprint or executable evidence method is activated.
How availability is determined
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.
Catalog status: Planned. Tracked metadata: we record the regime and its issuing authority for review. Registry presence does not mean automated monitoring is active. No control or requirement model is implemented.
Metadata only; Green Book principles, attributes, and documentation requirements are not ingested, normalized, or released as a product module.
Follow the source
Editions and transitions.
These are the editions recorded in the library, checked August 28, 2026. Confirm the applicable edition with the authority before beginning an assessment.
- 2025 RevisionCurrent edition on record · Replaces 2014 Revision
- 2014 RevisionSuperseded edition
Recorded change history
· GAO Green Book 2025 Revision supersedes 2014 Revision and is the current edition.
Check the basis
Sources you can follow.
Verified against the issuing authority’s own publication. Source verification was recorded on August 28, 2026.
- US Government Accountability Office (opens in a new tab)
Issuing authority and framework publication.
Catalog provenance and record details
Framework record: gao-green-book-2025.
Source artifact: acquisition required.
Parsed catalog: Not ingested.
Control families as published: Control environment · Risk assessment · Control activities · Information and communication · Monitoring.
Record last updated: August 28, 2026.
Common questions
A closer look.
What is 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.
Who does GAO Green Book apply to?
GAO Green Book applies to federal, government audit, public sector, US, per US Government Accountability Office.
What is the current version of GAO Green Book?
The current edition is 2025 Revision, issued by US Government Accountability Office and published 2025-05-15. Source: https://www.gao.gov/greenbook.
What does an assessment under GAO Green Book require?
No control catalog has been ingested for GAO Green Book yet — the registry tracks it as planned (Tracked metadata: we record the regime and its issuing authority for review. Registry presence does not mean automated monitoring is active. No control or requirement model is implemented), so an assessment under this framework currently requires the authority's own catalog rather than a ControlFrame-parsed one.
At a glance
GAO Green Book
2025 Revision
- Framework reference
- Authority and edition tracked
- Evidence preparation
- Framework reference available
- Source confidence
- Primary authority
A framework reference describes requirements. Evidence decisions belong to a scoped assessment and a named reviewer.
Make the requirements
part of the work.
Explore how ControlFrame can organize GAO Green Book requirements, evidence preparation, and review for your assessment scope.