Internal audit reports serve as a governance "compass," helping the Board of Directors and Executive Management identify gaps in internal control and risk management systems. According to survey data from large corporations in 2025, over 851 companies with effective internal audit departments reduced at least 201% of financial losses due to operational errors or fraud. This demonstrates that the final product of an audit is not simply a document listing errors, but a tool for improving business value.
In Vietnam, conducting and reporting internal audits is not only a self-driven need of businesses but also a legally mandated responsibility. Decree 05/2019/ND-CPWith the strong digital transformation expected in 2026, standards for transparency and factual data in reporting are becoming increasingly stringent. This article will provide a comprehensive overview, from the legal framework to the technical aspects of professional reporting according to international IIA standards and regulations of the Ministry of Finance.
Understanding Internal Audit Reports Correctly: Their Nature and Indispensable Role
To operate a professional internal control system, managers first need a thorough understanding of the core nature of this activity. Internal audit reports are not simply administrative procedures, but the culmination of an independent review process aimed at protecting the best interests of the business.
What is internal auditing? Why should every business care about it?
Before delving into the technical aspects of reporting, we need to agree on the modern definition of internal auditing. It is an independent, objective assurance and advisory activity designed to add value and improve organizational operations through a systematic approach.
Report internal audit This document officially records these results. Businesses need to pay attention because it is the third line of defense in the Three Lines Model, helping to detect risks that operational departments often overlook. Maintaining the quality of these reports helps strengthen the confidence of investors and government regulatory agencies.
The role of internal audit in modern corporate governance.
In the era of Management 4.0, the role of the auditor has shifted from "policeman" to "strategic consultant." The presence of internal audit reports ensures that potential risks are identified early and addressed promptly before they escalate into actual crises.
In a governance system, internal auditing plays a crucial supervisory role in ensuring compliance. This document provides evidence-based analyses of whether internal policies are being properly implemented. It helps bridge the information gap between direct management and stakeholders, ensuring that all company resources are being used appropriately and efficiently.
The difference between an internal audit report and an independent audit report.
A common mistake many businesses make is equating internal auditing with independent auditing, leading to overlapping functions or overlooking governance gaps. Understanding the differences below will help businesses optimize costs and resources for auditing.
| Criteria | Internal audit report | Independent audit report |
| Purpose | Risk management and improvement of internal operations. | Provide an opinion on the accuracy and integrity of the financial statements. |
| Object | Management Board, Board of Directors, Audit Committee. | Shareholders, Banks, Tax Authorities, Investors. |
| Legal | According to Decree 05/2019/ND-CP and internal regulations. | According to the Vietnamese Auditing Standards (VSA). |
| Frequency | Continuously throughout the year as per the approved plan. | Annually (or semi-annually) review. |
| Scope | All operational, compliance, and financial processes. | The numbers in the financial statements are crucial. |
Legal Framework on Internal Auditing and Reporting in Vietnam (Updated 2026)
Compliance with the law is a prerequisite for all businesses operating in Vietnam. In 2026, regulations on internal audit reporting were tightened to enhance the transparency of the financial market and protect the legitimate rights of stakeholders.
Decree 05/2019/ND-CP: The core legal foundation
Decree 05/2019/ND-CP continues to be the "backbone" legal document governing all internal audit activities. Understanding the provisions of this decree helps businesses avoid administrative penalties and build a control system that meets state standards.
According to Article 16 of the Decree, an internal audit report must be prepared to present the audit results after the completion of each audit. The report must include an assessment of the internal control system, any errors or deficiencies, and recommendations for corrective action. In 2026, authorities intensified inspections of compliance with this Decree, particularly at state-owned enterprises and listed companies.
Entities required to conduct internal audits in 2026
Not all businesses are subject to mandatory legal regulations regarding internal auditing, but for those listed below, preparing internal audit reports is an inseparable task.
Based on Articles 8, 9, and 10 of Decree 05, the list of units required to establish a system and prepare reports includes:
- State-owned enterprises: State-owned corporations, holding companies, and companies operating under a parent-subsidiary model are listed under 50%.
- Listed company: These are companies whose shares are listed on the Stock Exchange (HOSE, HNX).
- Public non-profit organization: These units are self-sufficient in covering both recurrent and investment expenditures on a large scale.
- Government agencies: Ministries, ministerial-level agencies, and People's Committees of provinces and centrally-administered cities.
Non-compliance with internal audit regulations may result in administrative penalties as stipulated in Decree 41/2018/ND-CP on penalties in the field of accounting and independent auditing.
Applying International Standard IIA in Internal Audit Reports
To expand internationally and attract foreign investment, Vietnamese businesses are increasingly focusing on integrating IIA standards into their reporting processes. The intersection of domestic law and international practices creates a robust governance system.
Although Vietnamese law has its own framework, to enhance professionalism, auditors often apply the International Professional Practice Framework (IPPF) of the IIA. Internal audit reports based on IIA standards require high confidentiality, absolute objectivity, and a focus on significant risk issues. The combination of Decree 05 and IIA standards creates a high-value report recognized by international organizations.
Breaking down the content of a standard internal audit report.
A quality report must be built on a solid foundation of content. Breaking down each component of an internal audit report helps us understand how information is organized so that readers can easily grasp the most significant risks.
Standard structure of a professional internal audit report
The structure is the framework that defines the logic of the entire report. A standard structure helps auditors present complex issues coherently, from the general to the specific, ensuring that no important aspects of the audit are overlooked.
A comprehensive internal audit report typically includes three main sections with logical subsections:
- Part 1: General Information: Objectives, scope, timeframe, and approach.
- Part 2: Executive Summary: This is the most important section for busy managers, outlining an overall assessment of the unit's risk level.
- Part 3: Detailed audit results: Analyze the findings by business area.
Detailed analysis of core content
The "body" of the report is where auditors demonstrate their professional competence through insightful analysis. Here, all raw data is transformed into useful information that helps management understand the operational status of the organization.
In detail, an internal audit report needs to answer three big questions: “What happened?”, “Why does it matter?”, and “What needs to be done next?”. Audit findings should be categorized by priority level: High, Medium, Low, so that management can plan the allocation of resources for remediation appropriately.
The “5C” requirements for audit results and recommendations.
The 5Cs principle serves as a guiding principle for modern audit report writing. Applying these five criteria precisely will ensure that each finding in an internal audit report is irrefutable and creates positive pressure for the entity to improve.
For a finding to be convincing, auditors need to follow the 5C writing technique:
- Condition: What problems exist?
- Criteria: Which regulation requires that?
- Cause: Why did the mistake happen?
- Consequence (Result/Risk): What if we don't fix it?
- Corrective Action (Recommendation): What is the specific solution?
A detailed guide on how to prepare an Internal Audit Report from A to Z.
The reporting process is a meticulous journey requiring strict adherence to technical steps. From the preparation phase to the official release, each step directly impacts the reliability of the internal audit report.
Preparation phase: Information gathering and planning
The success of an audit report lies in the preparation of evidence. Without sufficiently strong evidence, any conclusions in an internal audit report will become subjective and easily rejected by the audited entity.
Before beginning to write the report, the auditor must complete the evidence gathering process. Audit evidence must meet three criteria: Sufficient, Reliable, and Relevant. The auditor should create an Issue Track Log to standardize the figures before including them in the final report.
Implementation phase: Writing findings, conclusions, and recommendations.
This is the "conception" stage for developing the main content of the report. The auditor's language skills and analytical abilities will determine whether the internal audit report truly becomes a tool for improvement or simply a document to be kept in a drawer.
When writing reports, neutral and objective language should be used. Instead of writing "The accounting department made a mistake," write "The current accounts receivable reconciliation process is not timely." Recommendations must be feasible in terms of cost and resources, avoiding unrealistic solutions that waste the company's resources.
Final stage: Review and feedback
The final quality of the report is determined by cross-review and consensus-building discussions. An internal audit report that is agreed upon by all parties has a much higher probability of implementing its recommendations than a one-sided, imposed report.
This is a crucial step to ensure objectivity. Auditors need to send the draft to the audited entity for their feedback. Agreement on facts between the auditor and the audited entity is a prerequisite before the final release. If there are differences of opinion, dissenting opinions must still be clearly documented in the report.
Latest Internal Audit Report Template 2026
To save time and ensure professionalism, using standardized forms is essential. Below is a modern reporting template that fully integrates risk and compliance elements for businesses in 2026.
| Index | Main content to be presented | Technical notes |
| 1. Audit opinion | Overall rating: Pass/Fail/Partially Pass. | Based on importance. |
| 2. Summary of errors | List of errors, risk levels, and deadlines for correction. | Use colors (Red/Yellow/Blue). |
| 3. Financial analysis | Compare actual figures with accounting records and tax regulations. | Provide evidence from the tax circular. |
| 4. IT Assessment | Data security and access control in ERP systems. | Digital auditing trends. |
| 5. Appendix | List of checked documents, detailed forms. | Prepare proof of storage. |
The 2026 internal audit report template should also incorporate ESG (Environmental, Social, and Governance) indicators to meet the sustainability reporting trends of public companies and large investment funds.
The art of presenting an internal audit report to management.
Writing a good report is only half the battle; the ultimate goal is to present it in a way that the management team understands and can decide on action. An auditor's presentation skills are the key to unlocking change within the company.
Persuasive presentation skills
When standing before the Board of Directors, auditors should not simply read from a script but must convey the "essence" of the internal audit report. Focusing on compelling numbers and tangible risks will capture the attention of executives.
Even the best report will struggle to drive change if it's not presented convincingly. Auditors should focus on direct financial risks and reputational risks. Use the "Sandwich" method: Start with positive points, present areas for improvement, and conclude with a positive outlook if the recommendations are implemented.
Workflow with stakeholders
The report doesn't end after the presentation. A professional workflow requires close follow-up after the audit to ensure that all values stated in the internal audit report are translated into concrete corrective actions.
After official release, the report needs to be followed up. Auditors cannot simply make recommendations and then ignore them. According to Circular 8/2021/TT-BTC, the entity must report on the implementation of audit recommendations. An audit is only truly complete when the risk gaps have been addressed through concrete actions from the relevant departments.
Common mistakes when preparing internal audit reports and how to fix them.
Learning from the mistakes of others is the fastest way to improve yourself. In auditing, small errors in presentation or logic can completely undermine the credibility of a meticulously prepared internal audit report.
| Common errors | Error description | Solutions according to MAN |
| Lack of evidence | Drawing conclusions without providing specific data, documents, or evidence to support them. | Please attach complete data extraction files, screenshots, and on-site confirmation records to ensure the legal validity and persuasiveness of the audit findings. |
| Negative language | Using personally critical language can easily provoke a negative reaction from the audited entity. | Focus on analyzing processes and control points, avoiding assigning individual responsibility; aim for system improvement and risk prevention. |
| Delayed reporting | Releasing audit reports too late means that findings are no longer timely and are difficult to address. | Establish a Flash Report process to immediately report serious issues upon detection, helping businesses make timely adjustments and mitigate risks. |
Conclude
Internal audit reports are not only a legal obligation under Decree 05/2019/ND-CP, but also a strategic asset that helps businesses achieve sustainable development in the volatile business environment of 2026. Building a professional, objective, and constructive report will help management make accurate decisions, protect shareholder interests, and enhance reputation in the financial market.
If your business is struggling to set up a system or needs an independent third party to provide professional internal audit reporting services, MAN – Master Accountant Network is ready to assist you. We offer comprehensive solutions in auditing, tax accounting, and risk management consulting, helping you optimize your internal control system most effectively. Contact MAN today to receive advice from leading experts in accounting, auditing, and tax in Vietnam.
Service contact information at MAN – Master Accountant Network
- Address: No. 19A, Street 43, Tan Thuan Ward, Ho Chi Minh City
- Mobile/Zalo: 0903 963 163 – 0903 428 622
- Email: man@man.net.vn
Content production by: Mr. Le Hoang Tuyen – Founder & CEO MAN – Master Accountant Network, Vietnamese CPA Auditor with over 30 years of experience in Accounting, Auditing and Financial Consulting.
FAQ: Frequently Asked Questions about Internal Audit Reports
Do internal audit reports need to be submitted to the Tax authorities?
No. This is an internal administrative document. However, if the business is under tax audit or involved in a legal dispute, the authorities have the right to request this document for verification purposes.
Who is responsible for signing the report as the final signatory?
Typically, this involves the Audit Team Leader and the Chief Internal Auditor (CAE). In some large companies, the report requires the approval of the Chairman of the Audit Committee, who reports to the Board of Directors.
If a business is small, is it necessary to prepare reports?
Although not mandated by Decree 05, small businesses should still prepare periodic internal audit reports to monitor cash flow, protect assets, and build a solid governance foundation for future expansion.
