ATO warning letters: what you need to know
When the Australian Tax Office (ATO) sends you a warning letter, you need more than advice. You need a trusted partner who understands both the technical and human side of this challenge.
At AVA Advisory, we combine expert guidance with genuine understanding to help you address your tax obligations effectively and protect your business’s future.

What to do if you’ve received an ATO warning letter
An ATO warning letter signals the need for immediate action. We understand how overwhelming these letters can feel, especially when you’re managing multiple business responsibilities. With the right guidance, you can navigate this challenging situation with clarity and purpose.
The ATO will work with businesses who take proactive steps to resolve their tax obligations. But they expect genuine engagement and timely action. Even if you can’t pay your full tax debt immediately, taking early steps can make a significant difference to your outcome.
Our advisory team can help you:
- understand your warning letter’s implications
- create a strategic response plan
- protect your personal and business interests
- engage effectively with the ATO

How AVA Advisory can help
We understand the stress and complexity of receiving an ATO warning letter. Our experienced team provides clear guidance to help you navigate this challenging situation and work towards the best possible outcome.
Comprehensive assessment
We carefully review your warning letter to explain its implications and identify urgent actions needed. This helps you fully understand your position and available options.
Strategic response
Our focused approach includes developing practical action plans, exploring debt reduction options and creating solutions that work for your unique situation. We ensure every strategy aligns with your specific business circumstances.
ATO negotiation expertise
We engage proactively with the ATO on your behalf, aiming to secure manageable payment arrangements or explore potential debt reduction strategies. This helps reduce immediate financial pressure while protecting your long-term interests.
Business restructuring guidance
If your situation requires broader action, we provide expert advice on restructuring options. This might include developing turnaround strategies or operational improvements to secure your business’s future.



Why is the ATO issuing more warning letters?
Following a temporary pause in debt recovery during COVID-19, the ATO has intensified its efforts to recover unpaid taxes. This has led to an increase in warning letters across Australia.
Taking early action gives you more options to address your tax obligations and avoid severe consequences. Our team of experts can help you navigate these challenges and explore the best options for your circumstances.
is owed to the ATO by businesses
of small and medium-sized businesses are unaware of available solutions when facing financial pressure
Why is the ATO issuing more warning letters?
Following a temporary pause in debt recovery during COVID-19, the ATO has intensified its efforts to recover unpaid taxes. This has led to an increase in warning letters across Australia.
Taking early action gives you more options to address your tax obligations and avoid severe consequences. Our team of experts can help you navigate these challenges and explore the best options for your circumstances.
is owed to the ATO by businesses
of small and medium-sized businesses are unaware of available solutions when facing financial pressure
What is an ATO warning letter?
An ATO warning is a formal communication about outstanding tax obligations. The ATO uses a colour-coded system – blue, orange and red letters – to communicate different levels of urgency and required action.
These letters outline:
- specific tax debts requiring action
- deadlines for your response
- consequences for non-compliance
- options to resolve the situation
The ATO’s goal is to encourage taxpayers to address their debts by:
- paying in full
- setting up payment plans
- engaging with the ATO before matters escalate

What is a Director Penalty Notice (DPN)?
A DPN is a formal notice issued by the ATO, holding directors personally liable for unpaid company tax obligations. These obligations may include:
A DPN is a formal notice issued by the ATO, holding directors personally liable for unpaid company tax obligations. These obligations may include:
Pay As You Go (PAYG) Withholding
Superannuation Guarantee Charge (SGC)
Goods and Services Tax (GST)
The DPN outlines the unpaid debt and actions required to avoid personal liability.

Types of DPNs: Which have you received?
The ATO issues two types of DPNs, each with specific implications:
21-day DPN (Traditional or Non-lockdown DPN)
Issued when tax debts are overdue but have been reported to the ATO within three months of the due date.
Directors have 21 days to act, with options such as:
Paying the debt in full.
Placing the company into liquidation or Voluntary Administration (VA).
Appointing a Small Business Restructuring Practitioner (SBRP), if total debts are under $1 million.
Directors have 21 days to act, with options such as:
Lockdown DPN
Issued when tax debts remain unreported or unpaid for over three months past the due date.
Directors are immediately personally liable for the debt, with no option to appoint administrators or liquidators to avoid liability.
Key Difference
A 21-day DPN provides time to act, while a Lockdown DPN imposes immediate personal liability.
Types of warning letters: which have you received?
The ATO uses three types of warning letters. Understanding which type you’ve received helps determine how quickly you need to act:
Blue letter
This is the ATO’s initial warning about unpaid tax debt. Blue letters:
- cover a wide range of tax obligations
- provide instructions for addressing the debt
- outline payment arrangement options
- set timelines for your response
Orange letter
If you haven’t responded to a blue letter, you’ll receive an orange letter. This escalated warning:
- outlines the potential penalties for overdue tax obligations
- advises about default assessment penalties up to 75%
- informs you of possible credit reporting within 28 days
- focuses on debts over $100,000 that are 90+ days overdue
Red letter
A red letter is the ATO’s final warning before taking recovery action. This urgent notice:
- demands an explanation for non-compliance
- covers tax obligations over $100,000
- signals immediate enforcement action
- requires you to act fast
What should you do after receiving a warning letter from the ATO?
Receiving an ATO warning letter requires prompt action. Taking the right steps early helps protect your business and gives you more options for resolving your tax obligations.
Step 01
Seek professional advice
Contact an experienced tax or insolvency specialist immediately. Expert guidance helps you understand your warning letter’s implications and navigate complex ATO processes effectively. With professional support, you’ll be better positioned to explore available options and develop a strategic plan that protects your interests.
Step 02
Assess and strategise
Take time to thoroughly review your warning letter, understanding the specific issues raised and deadlines involved. Gather your financial documentation and work on creating a clear action plan. Consider all available options, including potential restructuring if needed, to achieve the best possible outcome for your circumstances.
Step 03
Engage with the ATO proactively
With expert support behind you, contact the ATO promptly to discuss your situation and present your proposed resolution plan. This proactive approach demonstrates your commitment to addressing the issue. Maintain clear documentation of all communications and follow through consistently on agreed actions to build credibility with the ATO.

Why ignoring warning letters isn’t an option
Failing to respond to an ATO warning letter can trigger severe consequences for both you and your business.
Escalating consequences
The ATO’s colour-coded warning system indicates progressively severe repercussions. Each level brings stricter penalties and fewer options for resolution. Early action gives you more flexibility in negotiating payment plans and exploring restructuring options.
Personal liability
Directors may become personally liable for company tax debts through Director Penalty Notices (DPNs) if they don’t act on warnings. This puts your personal assets at risk and can have long-lasting financial implications.
Credit impact
For tax debts exceeding $100,000 and over 90 days overdue, the ATO can report to credit reporting bureaus. This seriously impacts your business’s credit score and ability to secure future financing.
Legal and financial penalties
Ignoring warnings may result in default assessments with penalties up to 75% of your tax-related liability. Additional fines for late lodgement and potential legal proceedings can further compound your financial stress.
Limited options over time
As warnings progress through the ATO’s system, your available options to address the debt decrease. Early engagement gives you more flexibility to negotiate payment plans and explore solutions that work for your business.
As a former director, can you be affected by a wind-up notice?
Even after stepping down as a director, you’re not automatically free from garnishee notice implications. The ATO can still hold you responsible for:
- PAYG withholding
- Superannuation Guarantee Charge
- Net GST liabilities
These responsibilities cover reporting periods that begun during your directorship.
If you learn of a garnishee notice affecting a company where you were previously a director, seek immediate advice to understand your position.

How AVA Advisory can help
We understand the stress and complexity of receiving an ATO warning letter. Our experienced team provides clear guidance to help you navigate this challenging situation and work towards the best possible outcome.
Comprehensive assessment
We carefully review your warning letter to explain its implications and identify urgent actions needed. This helps you fully understand your position and available options.
Strategic response
Our focused approach includes developing practical action plans, exploring debt reduction options and creating solutions that work for your unique situation. We ensure every strategy aligns with your specific business circumstances.
ATO negotiation expertise
We engage proactively with the ATO on your behalf, aiming to secure manageable payment arrangements or explore potential debt reduction strategies. This helps reduce immediate financial pressure while protecting your long-term interests.
Business restructuring guidance
If your situation requires broader action, we provide expert advice on restructuring options. This might include developing turnaround strategies or operational improvements to secure your business’s future.
FAQs
Find answers to common questions about ATO warning letters.
ATO warning letters outline your specific tax obligations, debt amounts, response deadlines and potential consequences of non-compliance. They also explain your options for payment or engaging with the ATO to resolve the situation.
Yes, the ATO will often work with businesses that engage proactively. Options may include setting up a payment plan or arranging a temporary payment deferral. Taking early action gives you more room to negotiate.
Response times vary with the letter type:
- Blue letters typically allow 14-28 days
- Orange letters usually give 28 days
- Red letters require urgent action within 7-14 days.
The warning letter itself doesn’t affect your credit score. However, the ATO may report tax debts to credit reporting bureaus if:
- Your business has an ABN
- The tax debt exceeds $100,000 and is over 90 days late
- You’re not actively working with the ATO to manage the debt.
If your company enters voluntary administration or liquidation:
- The administrator or liquidator takes responsibility for ATO matters
- Directors may still face personal liability, especially with DPNs
- The administration process might offer some protect against immediate ATO actions
Still have questions?
Get in touch for more information.
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