What Happens if You Don’t Do Your Tax Return?

July 2, 2026
What happens if you don't do your tax return?

Navigating tax obligations can be stressful and time-consuming if you’re an Aussie expat or a foreign investor. But here’s the deal—skipping out on your tax return is a game you don’t want to play.

Delaying or avoiding your tax return can result in a financial nightmare. You may face hefty penalties, accruing interest charges, and even legal repercussions. These consequences can escalate rapidly, making it increasingly difficult to resolve the situation.

In this guide, we’ll explore what happens if you don’t do your tax return and provide practical steps to rectify the situation. By taking proactive measures and seeking professional advice if needed, you can regain control of your finances and enjoy peace of mind. Remember, timely tax filing is critical to maintaining a healthy financial standing. Let’s get started.

Basics of Australian Taxation

First, let’s review the basics of the Australian tax system before discussing the consequences of not completing your tax return.

In Australia, the tax year runs from 1 July to 30 June. If you prepare your own tax return, you must finish it by 31 October. However, if you get professional help, you have more time. Residents, non-residents earning taxable income, and all business entities must file tax returns in Australia. The process involves gathering all your financial documents, filling out the necessary forms, and submitting them to the ATO by the deadline.

If you’re an Aussie living overseas, you must still lodge a tax return if you earn income in Australia. This includes income from rent, shares, and other Australian investments. If you own property or a business in Australia, you must declare your income and pay the necessary taxes. 

You can offset your taxable income with deductions like negative gearing. Lodging a tax return is mandatory even if you incurred a loss. So, what happens if you don’t do your tax return? Let’s break down both the long-term and short-term consequences.

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1. Financial Penalties

An immediate consequence of not filing your tax return is a financial penalty imposed by the ATO. This includes the failure to lodge penalty and general interest charge.

Failure to Lodge on Time (FTL) Penalty

If you miss the deadline for lodging your tax return, you may receive an FTL penalty. The amount varies by entity size and delay duration.

  • Small Entities: Those with annual income or GST turnover below AU $1 million incur one penalty unit per 28 days overdue, with a maximum of five penalty units.
  • Medium Entities: Entities with an income or GST turnover between AU $1 million and AU $20 million are classified as medium pay as you go (PAYG) withholders. These entities face double the rate of small entities, incurring two penalty units per 28 days overdue.
  • Large Entities: Entities with income or GST turnover exceeding AU $20 million or large PAYG withholders incur penalties at five times the base rate, resulting in five penalty units per 28 days overdue.
  • Significant Global Entities (SGEs): Since 1 July 2017, the ATO has imposed penalties on SGEs, typically multinational enterprises, with annual global income exceeding AU $1 billion. These penalties are calculated by multiplying the base rate by 500.

When Infringement Occurred Penalty Unit Cost (AU $)
On or after Jul 2023
313
1 Jan 2023 to 30 Jun 2023
275
1 July 2020 to 31 Dec 2022
222
1 July 2017 to 30 Jun 2020
210
31 July 2015 to 30 Jun 2017
180
28 Dec 2012 to 30 July 2015
170
Up to 27 Dec 2012
110

FTL Penalty Unit Amounts

Penalties for late tax returns can quickly accumulate. As of 2024, a penalty unit is $313, with a maximum of AU $1,565 per year, i.e. five penalty units. This doesn’t include potential interest and additional charges. Using an agent may offer you protection under safe harbour provisions.

General Interest Charge (GIC)

Besides the FTL penalty, the ATO charges interest on any outstanding tax debt until it’s fully paid. The GIC is calculated daily and compounds over time, increasing the amount you owe the longer you delay payment. The GIC annual rate for the July – September 2024 quarter is 11.36%.

The amount you owe can multiply, especially if you delay payment for an extended period. Initially applied to certain taxes, the GIC’s daily compounding rate now extends to most taxes, including income tax, fringe benefits tax, GST, and Pay As You Go (PAYG), and is updated quarterly. This interest aims to compensate the government for the delay in payment and to encourage timely compliance. 

These financial penalties can quickly add up, making your tax debt even more burdensome. You can consider voluntary disclosure to potentially reduce penalties and interest by coming forward about your overdue tax returns.

2. Long-Term Impact on Your Financial Health

Failing to file your tax return can impact your financial health, economic status, and ability to access financial opportunities.

Damaged Credit Rating

Unpaid taxes and accumulating penalties negatively impact your credit rating. A poor credit rating can severely restrict your financial opportunities. With a damaged credit score, obtaining loans, mortgages, and other forms of credit becomes challenging. This can affect your ability to purchase a home, finance a car, or secure personal or business loans.

Enforcement Actions by the ATO

The ATO resolves taxpayer matters through collaborative engagement rather than enforcement actions. However, if you don’t engage with them, they take firmer actions, such as garnishing your wages to recover unpaid taxes. This means a portion of your income is directly taken to cover your tax debt, reducing your disposable income. 

The Australian Tax Office can seize your assets, including bank accounts, property, and other valuable items, to settle your tax debt. Moreover, they can place liens on your property, making it difficult to sell or refinance it until you settle the tax debt.

Limited Financial Opportunities

A poor credit rating and ongoing financial struggles with the ATO can limit your access to financial opportunities. This includes difficulty securing business funding, investing in new ventures, or taking advantage of financial products and services.

Financial penalties and accruing interest charges can significantly increase the amount you owe, making your tax debt more burdensome and challenging. They can lead to a cycle of financial instability and increasing debt.

Lowered Economic Status

The combination of financial penalties, interest charges, and enforcement actions can undermine your overall financial health. Persistent tax issues can lead to long-term economic difficulties, affecting your quality of life and financial security. Unresolved tax issues can disrupt your financial planning, including saving for retirement, education, or significant life events.

In summary, not filing your tax return can severely impact your financial health, including damage to your credit rating, enforcement actions by the ATO, restricted access to financial opportunities, and overall economic instability.

3. Administrative Actions 

The ATO may withhold tax refunds if you don’t do your tax returns on time. This means that even if you’re entitled to a refund, you’ll not receive it until you file your overdue returns. The ATO does this in rare cases where they believe you’re involved in risky activities such as tax evasion, money laundering, or other financial crimes. 

The Australian Taxation Office may also issue a default assessment when you don’t do your tax return. A default assessment involves the ATO estimating your tax liability based on their available information. This estimated assessment often results in a higher tax liability than you may owe because it includes conservative assumptions and potential penalties. 

When the ATO issues a default assessment, you may be subject to an administrative penalty of 75% of the tax-related liability for each default assessment. In certain circumstances, this penalty can be increased to 95% of the tax-related liability if you have a history of non-compliance. You must do your tax returns to avoid inflated tax debts and associated penalties.

4. Legal Repercussions

Beyond financial penalties, persistent failure to lodge your tax returns can lead to serious legal consequences.

  • Prosecution: If you’ve ignored the ATO’s previous requests to lodge a return, they can issue a final notice. This legal document tells you to lodge by a specific date. The ATO can prosecute you if you fail to comply with the final notice, which could lead to a court conviction. In extreme cases, failure to lodge tax returns or deliberately underreporting income can result in tax evasion charges. Even if imprisonment isn’t common, severe cases are not out of the question.
  • Court Conviction: You can be convicted for not meeting tax obligations, resulting in hefty fines. These fines are often significantly higher than the ATO’s initial penalties and interest charges. A court conviction results in a criminal record, which can have long-lasting effects on your personal and professional life, including your ability to secure employment, travel and have a good social standing.
  • Increased Scrutiny: Failing to file tax returns or discrepancies in your tax filings can trigger audits. The ATO may closely scrutinise your financial affairs, which can be time-consuming and stressful. They’ll notify you by phone or writing that they’re conducting your audit. 
  • Travel Restrictions: If you have significant outstanding tax liabilities, the ATO may apply for a Departure Prohibition Order (DPO), preventing you from leaving the country until you resolve your tax issues. This restriction can disrupt your travel plans and international mobility.

Failing to file your tax return or consistently neglecting your tax obligations can lead to significant legal consequences.

5. Negative Effect on Business Operations

Failing to comply with tax obligations can significantly disrupt business operations, leading to complications.

The ATO can place liens on your business assets, restricting the company’s ability to use, sell, or leverage these assets. These situations can affect cash flow, hinder business expansion, and reduce your company’s financial flexibility. The liens on your key assets may severely hamper your business’s day-to-day operations.

For instance, if the ATO places a lien on essential equipment or property, it can impede production or service delivery.

Company directors may face personal liability for unpaid company taxes. This can include liabilities for Pay As You Go (PAYG) withholding, superannuation guarantee charges, and Goods and Services Tax (GST). Personal liability means that directors’ assets could be at risk to cover these debts.

Shareholders may also be affected, mainly if they have provided personal guarantees for company loans or other financial obligations. Moreover, suppliers, customers, and other stakeholders may lose trust in a business known for non-compliance, leading to reduced sales and loyalty.

6. Other Consequences

Not filing your tax return can have other repercussions apart from financial and legal consequences. For example, you may become ineligible for certain benefits if you aren’t current with your tax filings.

You may become ineligible for government benefits such as the Family Tax Benefit, Child Care Subsidy, and other rebates. These benefits are often contingent on your tax status being up-to-date.

Your superannuation contributions and benefits could also be affected. The ATO may take actions that delay or complicate your ability to manage and access your superannuation funds, impacting your retirement planning.

Non-compliance with tax obligations can damage your reputation with suppliers and customers. This can affect business relationships, lead to loss of business, and harm your company’s standing in the market. Potential business partners and investors may be hesitant to engage with a business known for tax issues, limiting opportunities for growth and collaboration.

If you don’t file your tax return, the impact extends beyond immediate financial penalties.  It’s crucial to file your tax returns on time and seek professional advice if you can’t meet your tax obligations.

How to Rectify the Situation if You Don’t Do Your Tax Return

If you find yourself in a bind because you didn’t file your tax return, don’t panic. You can take the following steps to rectify the situation and mitigate the consequences. 

  • Contact the ATO: The first and most crucial step is to contact the ATO immediately. Being proactive shows your willingness to resolve the issue and can help negotiate favourable terms. Clearly explain why you haven’t filed your tax return, whether due to financial hardship, health issues, or other personal reasons. 
  • Set up a Payment Plan: The ATO can provide various payment options based on your situation. If you cannot immediately pay the total amount you owe, you can request a payment plan. A payment plan spreads your debt over a fixed period, making it easier to manage your finances while staying compliant. The goal is to pay off your debt quickly to minimise additional interest and penalties. If your financial situation changes, contact the ATO to adjust your plan accordingly.
  • Lodge Overdue Returns: Filing your overdue tax returns is essential to keeping your tax affairs current. The sooner you file, the sooner you can stop accruing penalties and interest. 
  • Apply for Penalty Remission: If you have a valid reason for not filing your tax return on time, you can apply for a penalty remission. Examples include serious illness, natural disasters, or other significant events that prevented you from meeting your obligations. Provide supporting documentation to strengthen your case for penalty remission.
  • Stay Informed: Stay updated on your tax obligations and due dates to avoid future issues. The ATO offers various tools and services to help you stay compliant. Regularly check the ATO online services for reminders and updates about your tax obligations.

Filing your tax return may seem tedious, but the potential repercussions of neglecting this responsibility far outweigh the inconvenience. The risks are substantial, from hefty financial penalties and interest charges to severe legal consequences. 

Consider consulting with a tax professional to guide you in this complex process. A registered tax agent can communicate with the ATO on your behalf, helping you navigate the complexities of tax regulations and ensuring that your returns are filed correctly.

Complete Your Tax Returns Effortlessly

As an expat or foreign investor, navigating the complexities of the Australian tax system can be particularly challenging. Getting help from experienced tax professionals can make your tax journey smoother, ensuring you claim all eligible deductions and avoid costly mistakes.

Don’t let tax worries stress you out. Our experienced team at Odin Tax can help you file om time or catch up on your overdue tax returns. We specialise in maximising tax savings for Aussie expats and non-residents.

Contact us today and enjoy peace of mind knowing your taxes are in order.

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FAQs about What Happens if You Don’t Do Your Tax Return

The Failure to Lodge (FTL) penalty is a fine imposed by the Australian Taxation Office (ATO) if you don’t lodge your tax return or submit required documents by the due date. The penalty amount depends on the entity’s size and the delay’s duration, with higher penalties for larger entities and longer delays. This penalty encourages timely compliance with tax obligations and can increase significantly if the lodgement isn’t promptly addressed.

Yes, the ATO has the authority to garnish wages, seize assets, and take other legal actions to recover unpaid taxes.

Contact the ATO immediately to explain your situation and explore options such as payment plans to settle your debt. You can also contact a tax agent for professional and personalised advice.

A tax advisor can assist you by ensuring your tax returns are accurately prepared and filed on time. They help you avoid penalties and interest charges. They can advise you on tax planning and deductions, optimising your tax liability, and saving money. A specialist tax advisor can also represent you in dealings with the Australian Taxation Office (ATO), negotiating payment plans or resolving disputes on your behalf.

The ATO can issue a Departure Prohibition Order (DPO) to prevent you from leaving the country if you have significant outstanding tax liabilities. This restriction prevents you from leaving the country until you resolve your tax debts.

This legal measure ensures that individuals with substantial unpaid taxes fulfil their tax obligations before travelling abroad. Addressing any outstanding tax issues is crucial to avoiding such restrictions.

Failing your tax return can help your credit score, making it difficult to secure a mortgage or other loans. Lenders view unpaid taxes and penalties as signs of poor financial management, reducing your chances of loan approval or leading to higher interest rates and stricter terms.

Mortgage applications also often require proof of income and tax returns for the past few years. Not filing your tax return may result in a lack of the necessary documentation to support your application, leading to delays or denials.

Persistent failure to lodge tax returns can lead to serious legal consequences.

  • Prosecution by the ATO: The ATO can prosecute individuals and businesses that repeatedly fail to comply with tax obligations.
  • Court Convictions: You may face convictions, resulting in hefty fines and a criminal record. This can impact employment opportunities, professional licenses, and travel options.
  • Imprisonment: In extreme cases of tax evasion or fraud, penalties can include imprisonment for up to 12 months.
  • Asset Seizure and Garnishment: The ATO can seize assets or garnish wages to settle outstanding tax debts.
  • Increased Scrutiny and Audits: Failing to lodge tax returns can trigger audits and increased scrutiny of your financial affairs.
  • Future Financial Restrictions: Legal issues and criminal convictions can negatively impact your credit rating, making it difficult to secure loans and credit.
  • Compliance Orders: The court may issue orders mandating you to file overdue tax returns and comply with future tax obligations.

In summary, not filing your tax return can result in prosecution, court convictions, fines, imprisonment, asset seizure, increased scrutiny, reputational damage, financial restrictions, and compliance orders. It’s crucial to file on time and seek professional advice if needed.

Yes, in some cases, the ATO may offer penalty relief if you have a valid reason for the delay. It’s best to communicate with the ATO early and provide the necessary documentation.

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