What is the Difference Between External and Internal Auditing?

External Auditing

What is External Auditing?

External auditing is an independent process conducted by a certified external auditor (not an employee of the company) to review financial statements and ensure they reflect the true financial position according to international accounting standards (such as IFRS) or local standards. The auditor issues a neutral opinion (unqualified, qualified, or adverse) used by investors, regulatory bodies, and banks.

Objectives of External Auditing

• Ensure the accuracy of financial statements and their freedom from material errors
• Compliance with accounting standards, laws, and regulations
• Provide assurance to external stakeholders (investors, regulatory bodies, banks)
• Enhance trust in the company's financial reports
• Detect any fraud or manipulation in financial statements

Scope of External Auditing

The scope of external auditing is limited and primarily focused on:

• Balance Sheet: Review of assets, liabilities, and equity
• Income Statement: Verification of revenues, expenses, and profits
• Cash Flow Statement: Tracking operational, investment, and financing cash movements
• Statement of Changes in Equity: Review of changes in capital
• Supplementary Notes: Examination of accompanying notes and disclosures

Party Responsible for External Auditing

Conducted by an external auditor certified by the Saudi Organization for Certified Public Accountants (SOCPA), from major accounting firms or certified specialized local offices. The external auditor is completely independent of the company and not subject to its management. Appointed by the general assembly of shareholders or the board of directors.

Legal Framework for External Auditing

• Legally mandatory for public and closed joint-stock companies according to the Saudi Companies Law
• Required for companies listed on the Saudi financial market (Tadawul) according to Capital Market Authority regulations
• Subject to International Standards on Auditing (ISA) and local standards issued by SOCPA
• The external auditor's annual report is published and made available to the public

Frequency and Cost of External Auditing

• Frequency: Conducted annually at the end of the fiscal year
• Cost: Relatively high, depending on company size and operation complexity
• Duration: Usually 2-6 months depending on company size

Reports and Outputs

The external auditor issues an official report containing:

• Opinion: Unqualified (clean), qualified, adverse, or disclaimer of opinion
• Basis for Opinion: Reasons and justifications for the issued opinion
• Key Audit Matters: Important issues that were reviewed
• Responsibilities: Clarification of the role of management and auditor

Internal Auditing

What is Internal Auditing?

Internal auditing is an independent and objective internal process conducted by company employees (internal audit department) or external consultants to evaluate and improve operational efficiency, risk management, and compliance with internal policies. It doesn't focus only on financial statements but includes all aspects of operational processes, governance, and fraud prevention.

Objectives of Internal Auditing

• Improve operational efficiency and identify improvement opportunities
• Assess and manage operational, financial, and strategic risks
• Ensure compliance with internal policies and procedures
• Enhance corporate governance and internal control practices
• Detect and prevent fraud, manipulation, and errors
• Support management in decision-making through insights and recommendations

Scope of Internal Auditing

The scope of internal auditing is broad and flexible, including:

• Operational Processes: Review of daily operational efficiency in all departments
• Risk Management: Identification and assessment of potential risks
• Systems and Technology: Examination of information systems and cybersecurity
• Compliance: Verification of adherence to internal policies and external regulations
• Governance: Evaluation of governance structures and decision-making mechanisms
• Fraud Prevention: Search for indicators of fraud or manipulation
• Special Projects: Auditing of specific projects or operations as requested by management

Party Responsible for Internal Auditing

Conducted by the internal audit department in the company (internal employees) or a specialized external consultant. The internal audit department usually reports to:

• Chief Executive Officer or Chief Financial Officer in small and medium-sized companies
• Audit Committee of the board of directors in large companies

The internal auditor's independence is relative because they work within the company, but they should have freedom in performing their work without interference from executive management.

Legal Framework for Internal Auditing

• Not legally mandatory in most cases for small and medium-sized companies
• Required for companies listed on the Saudi financial market and large companies according to governance regulations
• Follows standards of the International Institute of Internal Auditors (IIA)
• Reports are internal and not published to the public

Frequency and Cost of Internal Auditing

• Frequency: Continuous or periodic (monthly, quarterly, or as needed)
• Cost: Lower than external auditing if the department is internal, but may be high if using external consultants
• Duration: Depends on task scope, may be days or weeks

Reports and Outputs

The internal auditor provides periodic internal reports containing:

• Findings: Observations and problems discovered
• Recommendations: Suggestions for improving operations and reducing risks
• Action Plans: Proposed corrective measures with timelines
• Follow-up: Follow-up reports to ensure implementation of recommendations

Key Differences Between External and Internal Auditing

After reviewing each type in detail, here's a direct comparison showing the fundamental differences:

• Independence
  External Auditing: Enjoys complete independence from the company, where the auditor is not subject to management authority and is not influenced by its directions, ensuring neutrality of professional opinion
  Internal Auditing: Works within the company's organizational structure and reports to senior management or the audit committee, so its independence is relative although it should have freedom in performing its work

• Executing Party
  External Auditing: Conducted by an external auditor licensed and certified by the Saudi Organization for Certified Public Accountants (SOCPA), usually from major accounting firms or specialized local offices
  Internal Auditing: Performed by the internal audit team in the company (permanent employees) or by using external consultants specialized in internal auditing

• Main Objective
  External Auditing: Verify the validity and accuracy of financial statements and express a neutral professional opinion on the fairness of their presentation of the company's true financial position
  Internal Auditing: Improve operational process efficiency, assess and manage risks, enhance governance, and ensure compliance with internal policies and procedures

• Scope
  External Auditing: Limited and focused on the four financial statements (balance sheet, income statement, cash flows, changes in equity) and supplementary notes
  Internal Auditing: Broad and flexible, includes all aspects of work from operational processes, systems and technology, risk management, governance, compliance, and fraud prevention

• Reports
  External Auditing: Official public report published and made available to shareholders and the public, includes the auditor's opinion and review results and is attached to annual financial statements
  Internal Auditing: Confidential internal reports submitted to senior management or audit committee, include findings, recommendations, and action plans and are not published to the public

• Frequency
  External Auditing: Conducted annually at the end of the company's fiscal year, and may take from two to six months depending on company size and operation complexity
  Internal Auditing: Continuous throughout the year or periodic (monthly, quarterly, semi-annually) according to the annual audit plan and management needs

• Mandatory Nature
  External Auditing: Legally mandatory for public and closed joint-stock companies according to the Saudi Companies Law, and listed companies in the financial market according to Capital Market Authority regulations
  Internal Auditing: Not legally mandatory for small and medium-sized companies, but required for listed companies, banks, and financial institutions according to governance requirements

• Standards
  External Auditing: Subject to International Standards on Auditing (ISA) and local standards issued by the Saudi Organization for Certified Public Accountants (SOCPA)
  Internal Auditing: Follows International Professional Practice Standards for Internal Auditing issued by the International Institute of Internal Auditors (IIA)

• Cost
  External Auditing: Relatively high, depends on company size, operation complexity, and required work hours, paid to the external audit office
  Internal Auditing: Lower cost if there's a permanent internal department (employee salaries only), but may be high if using external consultants

• Beneficiaries
  External Auditing: Current and potential investors, regulatory bodies (Capital Market Authority, Zakat, Tax and Customs Authority), banks and financial institutions, and the public
  Internal Auditing: Executive management, board of directors, audit committee, and internal stakeholders who benefit from recommendations to improve performance

Conclusion

External and internal auditing complement each other: the first ensures external trust in financial statements, while the second improves internal performance and reduces risks. In Saudi Arabia, the Companies Law and Capital Market Authority require large and listed companies to have external auditing, while internal auditing is encouraged to enhance governance and operational efficiency.

If you manage a company, start by assessing your needs: Do you need external assurance to attract investors and comply with laws? Or do you need internal improvement for operations and risk management? Often, you'll need both to build a strong and transparent organization. Consult an auditing and accounting expert to ensure compliance and efficiency.

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Effective auditing depends on organized and accurate financial records. Mezan is a Saudi cloud accounting software that helps you accurately record all your financial operations, issue comprehensive financial reports, and manage your accounts in a way that facilitates both external and internal auditing. With Mezan, you get reliable financial data ready for review at any time. Try Mezan today and start building a strong financial foundation for your company.