Free Sixth Edition Internal Auditing Textbook for Educators
The sixth edition of Internal Auditing: Assurance & Advisory Services is updated to align with the new Global Internal Audit Standards, enhanced with AI-powered learning tools, and designed for today’s globally connected classroom.

The Global Standard of Internal Audit Education
New Internal Auditing Textbook has been released as an eBook with the printed version to be released Q4 2025.
Key features of the sixth edition
- Real-world case studies from Protiviti’s Knowledge Leader platform
- Interactive eBook and “Coach Me” AI assistant for immersive, hands-on learning
- Translations and accessibility enhancements for inclusive education
- Content fully aligned with the Global Internal Audit Standards
How to reserve your free eBook copy
Fill out the form to join the educator list and receive your complimentary eCopy.
Whether you're refreshing your course materials or introducing internal audit to new learners, this edition delivers timely, practical content to prepare the next generation of professionals.
The eBook edition is available, the hardcover edition will be released in Q4 2025.
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Title: Internal Auditing: Assurance & Advisory Services, 6th Edition
Publisher: The Institute of Internal Auditors (IIA)
Authors: Michael Head, Paul Sobel, Cris Riddle, Mark Salamasick, Urton Anderson
ISBNs:- eBook: 978-1-63454-198-5
- Hardcover: 978-1-63454-197-8
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Students residing in the United States, Canada, and the Caribbean can apply for a free student membership of up to 6 years.
Individuals must meet the following requirements:
- Undergraduate student enrolled in 6+ credits.
- Graduate student enrolled in 6+ credits.
- Submit an unofficial transcript or class schedule in the application to reflect the credit hour enrollment requirement.
* International students, please contact your local IIA National Institute for more information on student membership.
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The publication includes review questions, discussion questions, multiple choice questions and case studies at the end of each chapter.
Additional supplemental material includes illustrative solutions, exams, and PowerPoint presentations to support instruction.
In addition, educators can register their students for complimentary access to Protiviti’s KnowledgeLeader.
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The anticipated release dates for the 6th Edition are:
- eBook: now available
- Hardcover: Quarter 4, 2025