Internal audit process: steps, focus areas, and tips

Published Tuesday 3 March 2026

Table of contents

• What is an internal audit?
• Why are internal audits important for small businesses?
• Types of internal audits
• Key roles in an internal audit
• The internal audit process
• Key areas of focus in internal audits
• Tips for success when implementing internal audits
• Streamline your audit processes with Xero
• FAQs on internal audits

Key takeaways

• Conduct internal audits at least once a year following a structured four-stage process: planning with risk assessment, fieldwork to gather evidence, reporting findings with actionable recommendations, and follow-up to ensure implementation.
• Focus your internal audits on high-impact areas including financial records accuracy, operational process efficiency, fraud prevention controls, and compliance with regulations or insurance requirements.
• Maintain objectivity during audits by ensuring the person conducting the review can remain independent about the area being examined, even if roles overlap in small businesses.
• Treat audit findings as improvement opportunities rather than problems by documenting each issue with supporting evidence, creating action plans with clear deadlines, and tracking implementation progress at 30, 60, and 90-day intervals.

What is an internal audit?

An internal audit independently examines your business's finances, processes, and systems to identify risks and opportunities for improvement. While the company employs internal auditors, professional standards define the role as an independent appraisal function requiring objectivity about the activities they review.

Unlike external audits, the results stay within your company and guide internal decision-making.

Auditors typically work for the company, though you can bring in outside consultants to help. Either way, you use the findings to strengthen operations rather than satisfy external stakeholders.

Common internal audit examples include:

• Risk management reviews: Identify how your company can reduce operational and financial risks
• Insurance compliance checks: Verify you meet policy requirements, such as cybersecurity standards for cyber insurance

Internal audits vs. external audits:

• Who conducts them: Company employees or hired consultants conduct internal audits; independent CPAs perform external audits
• Who sees the results: Internal audit findings stay within the company; external audit results go to investors, lenders, or regulators
• Primary focus: Internal audits typically examine operations and processes; external audits focus on financial accuracy

Understanding what internal audits involve and how they work helps you strengthen your business operations and reduce risks. Let's explore the key aspects of internal audits.

Why are internal audits important for small businesses?

Internal audits help small businesses improve efficiency, reduce risks, and stay compliant with regulations and insurance requirements. They give you a structured way to examine your processes and identify what's working and what needs attention.

For example, an internal audit of fraud prevention controls might:

• Review your existing safeguards against employee theft or cyberattacks
• Compare documented controls to actual day-to-day workflows
• Identify gaps or risks in your current system
• Provide recommendations you can act on immediately

Types of internal audits

The four main types of internal audits are operational, compliance, financial, and IT audits. The type you choose depends on what aspect of your business you want to examine.

• Operational audits: Evaluate internal processes to assess efficiency and resource use
• Compliance audits: Verify that your business follows laws, industry regulations, and internal policies
• Financial audits: Examine the accuracy of financial reports and the effectiveness of internal controls, often guided by established models like the COSO Internal Control: Integrated Framework.
• IT audits: Assess cybersecurity measures, data protection, network access controls, and team training

Key roles in an internal audit

Internal audits involve three key roles: the auditor who conducts the review, the committee or leadership who oversees it, and management who implements the findings. Each role contributes to a successful audit process.

• Internal auditor: Leads the audit process, evaluates records or processes, and maintains objectivity throughout
• Audit committee: Determines the audit scope, approves the plan, and reviews the final findings report
• Management: Allocates staff and resources for the audit and implements recommended changes

In small businesses, these roles often overlap. A bookkeeper might audit financial reports while a team manager reviews workflows. The key is ensuring the person conducting the audit can remain objective about the area being examined.

The internal audit process

The internal audit process follows four key stages: planning, fieldwork, reporting, and follow-up. Understanding each stage helps you prepare effectively and ensure thorough coverage.

1. Planning your internal audit

The planning phase establishes what you'll audit and how you'll conduct it. Start with a risk assessment to identify your most significant business risks, then design an audit that addresses them.

Follow these key planning activities:

1. Conduct a risk assessment: Identify the biggest threats to your business, whether fraud, inefficiency, or compliance gaps
2. Define the audit scope: Decide which processes, records, or systems you'll examine
3. Set clear objectives: Determine what you want to learn or accomplish
4. Create an audit plan: Outline the steps, timeline, and who handles each task

For example, concerns about internal fraud might lead you to audit financial statements and cash handling. Efficiency concerns might point toward a workflow review instead.

2. Conducting fieldwork and gathering evidence

The fieldwork phase is where you gather proof and examine what's actually happening in your business. This is the hands-on portion of the audit.

Common fieldwork activities include:

• Reviewing documents: Examine financial records, policies, and reports relevant to your audit scope
• Analyzing processes: Map workflows and compare them to documented procedures
• Interviewing staff: Talk with employees and managers about their roles and responsibilities
• Observing operations: Watch workflows in action to identify gaps between policy and practice
• Testing controls: Run simulations to assess how effective controls are, such as sending test phishing emails to evaluate how aware staff are of IT security

3. Reporting audit findings

The reporting phase documents your findings and provides actionable recommendations. Your audit report becomes the roadmap for improvements. Its findings are critical. For public companies, identifying even one or more material weaknesses can prevent management from certifying that internal controls are effective.

A strong audit findings report includes:

• Executive summary: Highlight the most important findings for leadership
• Detailed findings: Document each issue discovered, with supporting evidence
• Risk assessment: Rate findings by severity and potential business impact
• Recommend actions: Provide specific, actionable steps to address each issue
• Timeline: Suggest deadlines for when to implement changes

Once you complete the report, share it with your audit committee, business owners, or relevant managers who can authorize and implement changes.

4. Following up on implementation

The follow-up phase ensures audit recommendations get implemented. Proper follow-up ensures your findings report improves your business.

Effective follow-up includes:

• Track implementation: Monitor which recommendations you've addressed and which are still pending
• Set review dates: Schedule check-ins to assess progress, typically 30, 60, and 90 days after the audit
• Measure results: Compare post-implementation performance against your original audit objectives
• Document outcomes: Record what you changed and whether it achieved the intended results
• Plan future audits: Use lessons learned to inform your next audit cycle

Now let's look at which areas you should focus on during your internal audits.

Key areas of focus in internal audits

Internal audits examine how effectively internal controls work, whether you comply with regulations, and whether financial records are accurate. Here are the key areas small businesses typically focus on:

• Financial records: Verify the accuracy of your numbers, review data entry processes, and confirm who has access to financial systems
• Operational processes: Map each workflow step, identify who handles what, and spot redundancies or inefficiencies
• Fraud prevention: Assess risks from employee theft and external threats like phishing, then evaluate your safeguards against them. Internal control frameworks focus on safeguarding assets as a core component. Learn more about fraud prevention tips for small businesses.
• Risk management: Identify your biggest business risks and review your plans for reducing them and responding to crises

Tips for success when implementing internal audits

Follow these tips to run an effective internal audit that strengthens your business:

• Focus on benefits, not burden: Treat the audit as an opportunity to improve rather than a chore to complete
• Get leadership buy-in first: Ensure management visibly supports the audit so your team takes it seriously
• Define scope and goals upfront: Identify what you're examining, what you want to learn, and who handles each step
• Bring in experts when needed: Hire outside specialists if your team hasn't audited before, especially for compliance or IT reviews
• Gather the right data: Invest in tools like accounting software or process mapping apps to access what you need

Streamline your audit processes with Xero

Xero helps you prepare for internal audits with confidence. Generate financial reports in seconds. Track expenses by project or department. Access real-time data that auditors need.

Xero builds organized records and clear audit trails into your everyday accounting, so you spend less time gathering documents and more time acting on insights. Get one month free and see how Xero supports your next internal audit.

FAQs on internal audits

Here are answers to common questions about internal audits.

How often should internal audits be conducted?

Most small businesses should conduct internal audits at least once a year, with more frequent reviews for high-risk areas like financial controls or IT security. Increase frequency if you're actively working to reduce risk or improve compliance.

What's the difference between an internal audit and an external audit?

Internal audits focus on improving operations and reducing risks, with results used only within your company. External audits verify financial accuracy for outside stakeholders like investors, lenders, or regulators.

What happens if you find issues during an internal audit?

Finding issues is the point of an internal audit. Document each finding in your report, share it with leadership, and create an action plan with clear deadlines. When you discover issues internally, you have the chance to fix problems before they become compliance violations or costly mistakes.

How long does an internal audit typically take?

Most small business internal audits take two to four weeks from planning through final report. Simple audits of a single process may take just a few days, while comprehensively reviewing multiple areas can extend to six weeks or more. How long it takes depends on audit scope, business size, and how available your staff are.

What tools or software can help with internal audits?

Accounting software like Xero simplifies internal audits by organizing financial data, generating reports, and creating clear audit trails. You may also benefit from process mapping tools to visualize workflows, document management systems to organize evidence, and spreadsheets to track findings and recommendations.