Facing an Australian Taxation Office audit can feel daunting, but knowing the process helps you stay prepared and compliant. In this comprehensive Q&A guide, we explain what triggers an ATO audit, how the ATO conducts reviews, important record‑keeping rules, your rights and responsibilities, and possible outcomes. We flag any state nuances so there is no confusion. Read on to demystify the audit process and ensure you can respond confidently.

What is an ATO audit?

An ATO audit is a formal review of your tax affairs by the Australian Taxation Office to confirm you have met your lodgement obligations and paid the correct amount of tax. Audits help the ATO maintain the integrity of the tax system and can focus on individuals, small businesses or large entities.

Why might the ATO audit me?

The ATO selects audits using:

• Data analytics: Matching your reported income against information received from banks, employers and other sources
• Risk‑based profiling: Identifying taxpayers with a higher likelihood of errors or non‑compliance
• Industry benchmarks: Comparing your gross margins and expense ratios to peers in your field
• Random sampling: Periodically auditing a cross‑section of taxpayers

Receiving an audit notice does not always mean you have done something wrong; it means your affairs have been selected for closer inspection.

How does the ATO notify you?

You will receive an Audit Notice by mail or secure message through ATO Online services. The notice will outline:

• The period under review (for example, financial years 2021–22 and 2022–23)
• Documents and information requested (for example, bank statements, invoices, logbooks)
• A due date for your response

Always check that the notice is genuine and respond by the deadline to avoid escalation.

What types of audit are there?

1. Desk audit

• Conducted remotely, usually by phone or email
• Focuses on specific items such as deductions or lodgements

2. Field audit (site visit)

• An ATO officer visits your home or business premises
• Documents and records are examined on-site

3. Review

• Less formal than an audit
• The ATO seeks clarification or additional information without issuing a formal audit notice

Your rights and obligations are the same regardless of audit type.

How should I respond to an audit notice?

1. Acknowledge receipt – Contact the ATO via the details on the notice to confirm you received it
2. Review the request – Note which documents are required and any specific formats
3. Check timeframes – If you need more time, you can request an extension in writing before the due date
4. Gather records – Compile records for the period under review, ensuring completeness and accuracy
5. Seek professional advice – Consider consulting a registered tax agent or legal adviser if you need help

Timely and clear communication reduces stress and shows you are cooperative.

What records does the ATO require?

Under the Taxation Administration Act (a federal law), you must keep records for at least five years from the date you lodge your return. Commonly requested records include:

• Income documents: Payslips, PAYG summaries, bank interest statements
• Expense evidence: Receipts, invoices, merchant statements
• Logbooks: Vehicle use diaries for work‑related claims
• Contracts and agreements: Property leases, loan documents
• Accounting records: Spreadsheets, accounting software backups

Ensure records are legible and organised by date to streamline the review.

What happens during a desk audit?

• An ATO officer reviews the documents you supply electronically or by post
• You may receive follow‑up questions by phone or secure message
• The officer will compare figures in your return against supporting records
• If discrepancies arise, they will request explanations or corrected figures

A desk audit typically takes a few weeks once all information is provided.

What happens during a field audit?

• The ATO officer arranges a date to visit your premises
• You and any representatives (such as a tax agent) meet the officer on site
• Original documents are examined and may be temporarily reviewed on‑site
• Discussions clarify discrepancies, unusual transactions, or valuation methods
• The officer may take notes or copies of documents for further analysis

Field audits can last from one day to several visits, depending on complexity.

Can I have a representative present?

Yes. You have the right to appoint someone to represent you, such as:

• A registered tax agent
• A solicitor or legal adviser
• A family member or friend

Notify the ATO in writing before the audit to ensure clear communication channels.

What issues does the ATO commonly focus on?

• Work‑related deductions: Ensuring claims have proper records and meet substantiation rules
• Rental property income: Verifying rental income, expenses, and depreciation claims
• Business income: Checking turnover figures against bank deposits and point‑of‑sale records
• GST and BAS: Reviewing GST turnover thresholds and accurate reporting on Business Activity Statements
• Capital gains: Confirming asset disposal dates and cost bases

Understanding the ATO’s focus areas helps you anticipate questions and strengthen your records.

What are the possible audit outcomes?

1. No change – Your return is confirmed as correct
2. Amendment – Adjustments to income or deductions, resulting in additional tax or refund
3. Penalties and interest – If there is a shortfall, interest on unpaid amounts and administrative penalties may apply
4. Objection and appeal – You can object to the audit findings and request an independent review

The ATO will issue a Notice of Audit Findings detailing any changes and your right to object.

How do penalties and interest work?

• General interest charge (GIC) applies daily on overdue tax from the original due date
• Failure to lodge a penalty if you miss the lodgement deadlines without an approved extension
• Shortfall penalty for false or misleading statements, calculated as a percentage of the shortfall amount

Penalties can be remitted in limited circumstances if you voluntarily disclose errors before the audit begins.

What is the objection process?

If you disagree:

1. Lodge an objection – Within 60 days of the notice of amended assessment
2. Provide reasons – Explain why you believe the ATO’s decision is incorrect
3. Request ATO review – The ATO officer or delegate will reconsider the matter
4. Independent review – If still unresolved, you can take the matter to the Administrative Appeals Tribunal

Objections must be in writing and clearly outline the grounds for dispute.

Are there interstate differences?

ATO audits relate to federal taxes (income tax, GST, FBT). State‑based taxes such as payroll tax, land tax, and stamp duty are audited by state revenue offices under separate processes. If you have state tax obligations, you may face a separate state audit.

How long does an audit take?

Audit timelines vary:

• Desk audits – 4 to 12 weeks after receiving all documents
• Field audits – Several months, depending on size and complexity
• Objections and appeals – Up to 12 months or more if escalated

Stay proactive, respond promptly, and maintain clear records to keep the process on track.

How can I prepare to avoid future audits?

• Accurate record keeping in line with ATO guidelines
• Regular reconciliations of bank, accounting software, and PAYG records
• Timely lodgements of returns and activity statements
• Professional reviews of complex claims, such as capital gains or large deductions

Proactive compliance reduces the risk of audit selection and minimises stress if you are reviewed.

Facing an ATO audit can be straightforward when you know what to expect, how to respond, and what your rights are. Well‑organised records, clear communication, and understanding the process go a long way to a smooth audit experience.

Contact Latitude Accountants for a confidential discussion about navigating your ATO audit.

Disclaimer

This information is general in nature and does not constitute financial or tax advice. Tax laws and policies may change, and individual circumstances vary. Please consult a registered tax agent or the ATO for advice specific to your situation.