Register your interest to be the first to hear announcements about William Buck Adelaide’s 2026 CFO Summit.
“What I love most about my job is the variety, solving a diverse range of problems for a diverse range of clients.”
Zac Irvin
Principal, Audit & Assurance
With almost one decade of professional experience, Zac Irvin is a trusted member of the Audit and Assurance division, where he leads high performing teams and delivers tailored assurance solutions to a diverse client base. Zac’s career spans engagements with both privately held businesses and ASX-listed entities across sectors such as biotechnology and health sciences, retail, manufacturing and distribution and private equity.
Known for his technical precision and strong interpersonal approach, Zac partners closely with clients to help them navigate an evolving landscape of financial reporting, corporate governance and regulatory compliance. His leadership style is grounded in trust, collaboration and a deep understanding of each client’s strategic objectives—believing that effective auditing is not just about meeting statutory obligations but about driving meaningful value for businesses at every stage of their journey.
Zac’s high performance is matched by his passion for demystifying
complexity. He brings clarity to challenging regulatory environments and supports clients through periods of growth. Ultimately, providing insights that go beyond the numbers. Whether working with emerging innovators or established market leaders, Zac approaches each engagement with integrity, clear communication and a proactive mindset.
Above all, Zac is focused on building lasting relationships that go beyond the audit file. He is a trusted advisor who champions transparency and positive business outcomes—an audit professional who sees compliance as a foundation, not a ceiling.
The Facts:
Core Expertise
- Audit and assurance services
- Financial reporting
- Risk mitigation strategies
Qualifications & Associations
- Bachelor of Business (Accountancy)
- Member of the Chartered Accountants Australia and New Zealand
Industries & Specialisations
- ASX listed companies
- Private equity
- Biotechnology and health science
- Manufacturing and distribution