Internal Audit in 2025: Essential Insights for Australian Businesses

Internal audit has always played a critical role in corporate Australia, but in 2025, its importance has surged. As regulations tighten and economic conditions shift, the value of a proactive, forward-looking internal audit function is undeniable. Whether you’re running a small business or a large corporation, understanding the evolving landscape of internal audit could be the difference between thriving and surviving.

What’s Changed for Internal Audit in 2025?

Australia’s financial and regulatory landscape has seen significant transformation in the past year. The introduction of updated ASIC guidelines, the implementation of the 2024 Corporate Governance Amendments, and a renewed focus on cyber and ESG (Environmental, Social, Governance) risks have expanded the remit of internal audit teams.

• Cybersecurity: With ransomware and data breaches on the rise, audits now routinely assess cyber resilience, third-party risk, and data governance.

• ESG Compliance: New climate-related disclosure requirements mean internal audit must ensure sustainability data is reliable and reporting processes are robust.

• Remote Operations: Hybrid work has changed how controls operate, forcing auditors to rethink traditional testing and assurance methods.

For example, in early 2025, a mid-sized Sydney tech firm faced regulatory scrutiny after a minor data breach. Thanks to a recent internal audit that flagged outdated security protocols, the company quickly closed the loophole and demonstrated due diligence—resulting in a minor penalty instead of a major fine.

Internal Audit: More Than a Compliance Exercise

The days of box-ticking audits are over. Today’s internal auditors are strategic partners, helping businesses anticipate risks, optimise processes, and drive value. A well-resourced audit function can:

• Identify emerging risks before they escalate—whether it’s a supply chain disruption or a new regulatory threat.

• Improve operational efficiency by spotlighting inefficiencies and recommending process improvements.

• Enhance trust with investors, regulators, and customers by demonstrating strong governance and transparency.

For instance, several ASX-listed companies have credited robust internal audit reviews with helping them avoid costly project overruns and reputational damage during recent public scrutiny of ESG reporting.

Best Practices: Building a Future-Ready Internal Audit Function

If your business wants to stay ahead, consider these best practices for internal audit in 2025:

• Leverage Technology: Use data analytics, automation, and AI-driven audit tools to scan for anomalies and trends across vast data sets.

• Broaden the Audit Mandate: Go beyond financial controls—review cyber, ESG, and culture risks.

• Continuous Training: Upskill audit staff to keep pace with new risks and regulatory changes.

• Stakeholder Engagement: Collaborate with IT, HR, and compliance to ensure audits reflect the full risk landscape.

In 2025, forward-thinking businesses are moving away from annual, retrospective audits. Instead, they’re embracing continuous assurance—using real-time data and regular check-ins to maintain oversight year-round.

Conclusion: Internal Audit as a Strategic Asset

In the fast-evolving regulatory and risk environment of 2025, internal audit is an essential pillar of resilience and growth for Australian businesses. By investing in a proactive, tech-enabled audit function, companies can safeguard their reputation, ensure compliance, and unlock new value. Don’t let internal audit be an afterthought—make it your competitive advantage.