ISACA ITAF – IT Audit Framework: A Professional Practices Framework for IT Audit

Why it Matters

IT audit findings are only as credible as the standards behind them, and regulators, audit committees, and external auditors expect IT assurance work to follow a recognized professional framework. ITAF is that framework for the IT audit profession: it is the basis of ISACA's certifications, it is free, and its structure of standards, guidelines, and tools maps directly onto how an engagement is planned, performed, and reported.

Key benefits include:

• Mandatory professional standards

ITAF standards are binding on ISACA-certified practitioners, giving IT audit work a defined professional baseline that stakeholders can rely on.

• Coverage of the whole engagement

General, performance, and reporting standards address independence and competence, planning and evidence, and reporting and follow-up in one framework.

• Guidelines that show how

Each series of standards is mirrored by guidelines that explain how to meet them, with tools and techniques such as audit programs and white papers.

• Current with technology

The 5th edition addresses cloud architectures, AI and automation, data-driven testing, continuous assurance, and governance accountability.

• Free and widely translated

ISACA publishes ITAF and its translations at no cost, so functions of any size can adopt it.

How it Works

ITAF is built in three layers. The standards are organized as general standards (1000 series), which set the guiding principles under which the IS assurance profession operates, including the audit charter, organizational and professional independence, reasonable expectation, due professional care, proficiency, assertions, and criteria; performance standards (1200 series), which address the conduct of the engagement, including engagement planning, risk assessment in planning, performance and supervision, materiality, evidence, using the work of other experts, and irregularities and illegal acts; and reporting standards (1400 series), which address reporting and follow-up activities. The guidelines mirror the standards in the 2000, 2200, and 2400 series and are designed to directly support them, and the tools and techniques include white papers, audit and assurance programs, and reference material such as the COBIT family.

An IT audit function applies ITAF by establishing its charter and independence under the general standards, planning each engagement with a risk assessment and defined scope, materiality, and resources under the performance standards, gathering and evaluating evidence with appropriate supervision, and reporting findings with clear conclusions and follow-up under the reporting standards. Guideline 2208 governs audit sampling; other guidelines cover topics such as using the work of other experts and reporting. The 5th edition's shifts, from isolated controls to digital ecosystems, from periodic reviews to continuous insight, from sampling to data-driven testing, and from operational focus to governance and accountability, change how those steps are carried out rather than the standards' structure.

Within SmartSuite, IT audit teams run ITAF engagements as connected records: the audit universe and risk assessment drive the plan, each engagement carries its scope, materiality, program, and staffing, workpapers and evidence attach to the procedures they support with reviewer sign-off, and findings flow into reports and follow-up tracking, so conformance with the general, performance, and reporting standards is documented as the engagement proceeds.

Key Elements

• General standards (1000 series)

Guiding principles for the profession: audit charter, organizational independence, professional independence, reasonable expectation, due professional care, proficiency, assertions, and criteria.

• Performance standards (1200 series)

Conduct of the engagement: engagement planning, risk assessment in planning, performance and supervision, materiality, evidence, using the work of other experts, and irregularity and illegal acts.

• Reporting standards (1400 series)

Reporting and follow-up activities, covering the types of reports, the means of communication, and the information communicated.

• Guidelines (2000, 2200, and 2400 series)

Recommended guidance that mirrors each standard and explains how to achieve alignment with it, including guideline 2208 on IT audit sampling.

• Tools and techniques

White papers, IS audit and assurance programs, reference books, and related ISACA frameworks that support engagements.

• Terms and concepts

Definitions specific to IT audit and assurance that give engagements a common vocabulary.

• Digital trust and emerging technology coverage

The 5th edition integrates digital trust concepts and guidance on cloud, AI, automation, analytics, agile auditing, and continuous assurance.

Framework Scope

ITAF applies to IT audit and assurance engagements performed by practitioners in organizations of all sizes and sectors, whether in internal audit, external assurance, or specialist IT audit functions. Its standards are mandatory for holders of ISACA certifications such as CISA, and its guidelines are recommended practice. The framework covers the conduct of engagements and the professional obligations of practitioners; it does not itself define control objectives, which come from frameworks such as COBIT, ISO/IEC 27001, and NIST SP 800-53 that ITAF engagements assess against.

Framework Objectives

ITAF exists so that IT audit and assurance work is performed to consistent, recognized professional standards.

Define the roles, responsibilities, ethics, and competencies expected of IT audit and assurance practitioners.

Set mandatory standards for the planning, performance, supervision, and reporting of engagements.

Provide guidelines and tools that show practitioners how to meet the standards.

Establish a common vocabulary for IT audit and assurance.

Keep IT audit practice current with cloud, AI, automation, and continuous assurance.

Support the credibility of IT assurance for boards, regulators, and external auditors.

Framework in Context

ITAF is the IT audit companion to ISACA's COBIT 2019 governance framework, which supplies the objectives and practices that ITAF engagements commonly assess, and it operates alongside the IIA's Global Internal Audit Standards where IT audit is part of internal audit. IT audit engagements under ITAF regularly test controls drawn from ISO/IEC 27001, NIST SP 800-53, the NIST Cybersecurity Framework, and ITIL 4 service management practices, and IT general controls work supports the integrated ICFR audit under PCAOB AS 2201 and SOX. Assurance reports under ISAE 3000 and SOC 2 draw on comparable performance and reporting expectations.

Common Framework Mappings

ITAF is commonly mapped to the governance and control frameworks its engagements assess against and to the audit and assurance standards it operates alongside.

Mapped frameworks include:

COBIT 2019

IIA Global Internal Audit Standards

ISO 27001:2022

NIST 800-53 Rev.5

NIST CSF 2.0

ITIL 4

ISAE 3000

SOC 2

SOX

PCAOB AS 2201