What to Do If the ATO is Investigating You for Tax Fraud or Criminal Conduct

Understanding the Difference Between a Tax Dispute and a Criminal Matter

A nightmare realised, you’ve received a contact from the Australian Taxation Office. We get it, this can be unsettling, particularly when you are not sure what it means or how serious the situation is. For business owners, directors, and high-income earners, the stakes can be substantial. There’s a lot on the line, including your professional reputation, financial position, and in serious cases, your personal freedom.

The good news is that not every ATO letter signals criminal jeopardy. A routine compliance review is very different from a Serious Financial Crimes Taskforce (SFCT) investigation. As a taxpayer, the most helpful thing you can do is understand where you sit in the process.

Understanding where you sit, what your rights are at each stage, and when you need a criminal lawyer rather than just an accountant, is the first and most important step. We can help with that.

This factsheet explains the different stages of ATO contact, what constitutes a tax crime under Australian law, your legal rights throughout the process, and how early legal advice can make a real difference to outcomes.

Key Takeaways

• Not all ATO contact is equal. A routine audit letter and an SFCT investigation are fundamentally different situations requiring different responses.
• The line between a civil tax dispute and criminal conduct comes down to intent. Errors are not crimes. Deliberate concealment, false statements, and fraudulent activity are.
• If the SFCT becomes involved, criminal prosecution is a real risk. You need a criminal lawyer immediately, not just an accountant.
• Making a voluntary disclosure before the ATO contacts you can reduce administrative penalties by up to 80%. Timing is everything.
• You have the right to silence and legal representation in any criminal investigation. Do not meet with ATO officers alone.
• O’Brien Criminal & Civil Solicitors have more than 20 years of experience advising clients through ATO investigations and criminal tax matters.

At a Glance: What to Do If the ATO is Investigating You for Tax Fraud or Criminal Conduct

At any stage of ATO contact, you have the right to:

• Know the reason for the investigation or audit
• Have a criminal lawyer present during any meeting or questioning
• Remain silent if a criminal investigation is underway
• Object to and appeal ATO decisions through formal review processes
• Make a voluntary disclosure, with legal advice, before or during an audit

Critical distinction: In a civil audit, the ATO has broad powers to compel you to provide information. In a criminal investigation, your right to silence is paramount. The same conversation can have very different legal consequences depending on which context applies; this is why having a criminal lawyer determine that question first is essential.

Read our criminal case studies.

Types of ATO Contact: What Each Letter Means

ATO letters are not all the same. The type of contact tells you a great deal about where things stand. Note that each type of correspondence may arrive by post or through your myGov account, so keep a copy of everything you receive in relation to the matter.

Compliance Letter or Risk Review Notice: The ATO has identified potential discrepancies and is requesting information. This is an administrative process, not a criminal one, and you generally have time to respond carefully.

Audit Notification: A more intensive formal examination of your records is underway. This is still civil in nature, but false statements or deliberate concealment during an audit can escalate matters significantly.

SFCT or Law Enforcement Involvement: If you receive contact from or learn that the Serious Financial Crimes Taskforce is involved, this signals the ATO believes the conduct may be deliberate and serious. This is the point at which you must engage a criminal lawyer without delay.

CDPP Prosecution: The Commonwealth Director of Public Prosecutions has taken over the matter. Criminal charges are imminent or have already been laid.

Read any ATO letter carefully. References to “serious financial crime,” “criminal investigation,” or law enforcement agencies are warning signs. When in doubt, treat the situation as serious and contact a criminal lawyer immediately.

When Does a Tax Matter Become Criminal?

The dividing line is intent.

Tax Error (Civil): You claimed deductions you were not entitled to, or failed to declare all income, without any deliberate intention to defraud. For example, you may have overlooked income from the sale of an asset or made errors when lodging your return. The ATO may issue administrative penalties and interest, but no criminal charges will follow.

Tax Evasion or Fraud (Criminal): You intentionally concealed income, submitted false documents, created fictitious invoices, or made false statements to the ATO. This conduct is prosecuted under the Criminal Code Act 1995 (Cth).

Key criminal offences and their maximum penalties:

The ATO looks at patterns of conduct when assessing intent. Were errors corrected once discovered? Were false documents created deliberately? Was there systematic concealment over multiple years? The ATO also considers whether concerns were raised internally and ignored, or whether the taxpayer took steps to address the issue once it occurred. Intent matters, and the ATO investigates thoroughly to establish it.

The Serious Financial Crimes Taskforce (SFCT) and Government Agencies Involved

The SFCT is a joint-agency taskforce led by the ATO and funded by the Australian Government to combat serious and complex financial crime, including tax fraud. It brings together the ATO, law enforcement agencies, and other government agencies to investigate conduct that goes beyond simple tax errors.

If you are contacted by the SFCT, or learn that it is investigating you, this means the ATO considers the conduct potentially serious, not a mistake, but likely deliberate fraud or evasion. At this point, engaging a criminal lawyer is not optional.

The SFCT focuses on:

• High-risk and emerging tax crimes
• Professional facilitators of tax crime
• Transnational and organised tax fraud
• GST refund fraud and other systemic frauds

Cases investigated by the SFCT are typically referred to the Commonwealth Director of Public Prosecutions (CDPP) for criminal prosecution. Negotiating an outcome before charges are filed is far more achievable with experienced legal representation than after.

Voluntary Disclosure: A Critical Tool

If you have made errors in your tax returns, or in more serious cases, deliberately concealed income or falsified records, coming forward before the ATO contacts you can substantially reduce penalties and may protect you from criminal prosecution.

The ATO’s voluntary disclosure framework provides penalty reductions based on timing:

• Before ATO notification of an audit or review: Up to 80% reduction in administrative penalties
• After audit notification: 20% reduction, provided the disclosure saves the ATO a significant amount of time or resources
• Shortfall amounts under $1,000: Penalty may be waived entirely if disclosed before audit notification

Two important caveats:

First, voluntary disclosure reduces administrative penalties but does not automatically provide immunity from criminal prosecution. If the ATO or SFCT has already identified evidence of deliberate fraud, disclosure alone may not be enough to avoid charges.

Second, making a disclosure without legal advice can be self-incriminating. Before you approach the ATO, consult a criminal lawyer who can assess the full picture, advise on criminal exposure, and, in appropriate cases, negotiate with the ATO or CDPP to secure the best possible outcome before any disclosure is made. Do not use generic templates or lodge anything without proper legal guidance.

ATO Investigation Stages: Rights and Action Guide

Frequently Asked Questions

When does a tax audit become a criminal investigation?

The shift happens when the ATO moves from examining discrepancies to investigating intent. An audit may become a criminal matter when the ATO discovers evidence of deliberate concealment, false documents, or false statements. Warning signs include reference to the SFCT, ATO officers formally cautioning you about criminal liability, or a case being referred to the CDPP. If you receive any notice mentioning “serious financial crime,” “criminal investigation,” or law enforcement involvement, treat it as criminal exposure and contact a criminal lawyer immediately.

Do I have to answer ATO questions?

In a civil audit context, generally yes. The ATO has broad powers under the Taxation Administration Act 1953 (Cth) to compel you to provide information and documents. However, if a criminal investigation is underway, you have the right to silence. You should never answer ATO questions without first establishing whether the investigation is civil or criminal. The safest approach is to have all ATO contact proceed through your lawyer. Do not attend meetings with ATO officers alone.

What is the SFCT and why does it matter?

The SFCT is a joint-agency taskforce led by the ATO to investigate serious financial crimes, including tax fraud. Its involvement means the ATO considers your conduct potentially criminal, not a clerical error. Once the SFCT is involved, referral to the CDPP for prosecution is a real possibility. You must engage a criminal lawyer as soon as you become aware of SFCT interest in your affairs. For further information on the SFCT, visit the ATO’s page on serious financial crime.

Can I avoid prosecution by repaying the tax and penalties?

Not necessarily. Repaying what is owed may resolve civil liability but does not erase criminal conduct. If evidence of deliberate fraud, false statements, or conspiracy has been identified, prosecution can proceed regardless of whether the outstanding amount has been paid. That said, demonstrating genuine cooperation and repayment can be relevant to any negotiations with the CDPP, and may support a resolution that avoids prosecution or results in a more favourable outcome. This is exactly the kind of negotiation that requires a criminal lawyer, not just an accountant.

What if I genuinely made an honest mistake?

Honest mistakes, made without any intention to mislead the ATO, are dealt with as civil matters. The ATO may issue administrative penalties and interest, but criminal charges require proof of deliberate, dishonest conduct beyond a reasonable doubt. Keeping clear records of how any error arose and correcting it promptly when discovered supports a case that the conduct was inadvertent. If you are unsure whether your situation qualifies as an honest mistake, legal advice will help you understand where you stand.

Should I engage a lawyer or an accountant?

Both, but in the right order. An accountant can help you respond to audit queries and manage your tax position. A criminal lawyer is essential if there is any possibility of criminal exposure, because only a lawyer can properly protect your right to silence, advise on self-incrimination risks, and conduct negotiations with the ATO or CDPP that carry legal privilege. If criminal exposure is a possibility, engage the lawyer first.

What to Do Now

Do not ignore the letter. Responding promptly and appropriately matters. Delay or non-response can escalate ATO suspicion and reduce your options.

Do not meet with ATO officers alone. Have your accountant or lawyer present before any meeting. Do not answer questions without advice.

Read the letter carefully. Is the ATO asking about a specific year or transaction? Is there any mention of “serious financial crime,” “criminal investigation,” or law enforcement? These details tell you a great deal about the seriousness of your situation. Keep a copy for your records and share it with your legal team.

Consult a criminal lawyer, not just an accountant. If there is any suggestion of fraud, evasion, false statements, or SFCT involvement, you need a criminal lawyer. An accountant cannot protect your legal rights or advise on criminal exposure.

Consider voluntary disclosure, with legal advice. If you have made errors, your lawyer can assess whether a voluntary disclosure is the right strategy, when to make it, and how to structure it to minimise both administrative penalties and any criminal risk.

Act quickly. ATO investigations move at different speeds, but in serious cases, the window for early resolution narrows fast. The sooner you get proper legal advice, the more options remain open to you.

Why Legal Representation Matters: Fight for the Best Outcome with a Financial Advantage

ATO investigations that carry criminal exposure are among the most complex matters in the Commonwealth legal system. They involve overlapping civil and criminal frameworks, detailed evidentiary questions about intent, and negotiations with powerful government agencies. Getting the strategy wrong early can close off options that would otherwise have been available. A change in approach at the wrong stage can mean the difference between a civil resolution and a criminal prosecution.

At O’Brien Criminal & Civil Solicitors, our criminal defence team has more than 20 years of experience advising clients across the full spectrum of ATO contact, from routine audits through to SFCT investigations and CDPP prosecutions. We work closely with each client to ensure every available option is explored from end to end. We provide:

• A clear assessment of whether your situation carries criminal exposure
• Advice on your right to silence and how to handle ATO contact from day one
• Negotiation with the ATO and CDPP on your behalf, under legal privilege
• Voluntary disclosure strategy, including timing and how to structure the disclosure
• Full criminal defence representation to fight charges if they are laid

Get Expert Legal Advice: Free Initial Consultation

If you have received contact from the ATO or suspect you may be under investigation, do not delay. Early advice is your strongest protection.

Call us: 02 9261 4281

Or complete the enquiry form on our website. All consultations are confidential and obligation-free.

O’Brien Criminal & Civil Solicitors

Level 4, 219-223 Castlereagh Street, Sydney NSW 2000

This factsheet is for general information only and does not constitute legal advice. Every ATO matter is different. Do not rely on this information without first obtaining legal advice specific to your situation.