• Tax Deductions

How do I Find my Tax File Number in Australia?

Are you feeling lost in the labyrinth of the Australian tax system, desperately searching for your Tax File Number (TFN)? We understand the challenges you face, grappling with tax returns and trying to navigate the complexities of the system. In this easy-to-follow guide, we’ll demystify the process of locating your TFN as well as applying for your tax file number.

What is Tax File Number (TFN) Australia?

A Tax File Number (TFN) is a unique identifier issued by the Australian Taxation Office (ATO) to individuals and organizations for taxation purposes. It is a crucial piece of information that helps the ATO track an individual’s tax obligations and manage their financial affairs.

Importance of Your Tax File Number (TFN):

Anyone who is working, living or conducting business in Australia must get their unique Tax File Number (TFN). It is a unique identifier for individuals and organizations during their ATO dealings. Getting a TFN is necessary to 

  • Comply with tax regulations
  • File tax returns
  • Apply for government benefits
  • Avoid higher tax rates

Privacy and Security of Tax File Numbers (TFNs):

Your Tax File Number (TFN) is highly confidential, and it’s important to keep it secure. The ATO takes measures to protect the privacy of TFNs and ensures that they are only used for authorized purposes related to taxation. It is advisable not to share your TFN unless necessary and to be cautious of potential scams or fraudulent activities.

TFN for Different Types of Entities:

Tax File Numbers (TFNs) are issued to various entities, including:

  • Individuals
  • Partnerships
  • Companies
  • Trusts
  • Superannuation funds

Each entity must follow its unique requirements and obligations pertaining to TFNs. The ATO website provides specific information and resources tailored to each entity type, so you can easily understand your responsibilities.

Tips for Managing Your Tax File Number (TFN):

Once you have obtained a Tax File Number (TFN), it is essential to keep it safe and update your details if there are any changes. 

You can manage your TFN information through the ATO website’s online services. Go to the website to:

  • Update your contact details
  • Link the TFN to your Australian Business Number (ABN)
  • Or request a re-issue if needed

Applying for an Australian Tax File Number (TFN):

You can apply online for Tax File Number (TFN) through the ATO website. Alternatively, you can submit a paper application form. The ATO website provides clear guidelines on the required documents and the application process. It is important to provide accurate information and meet the eligibility criteria to avoid any delays or issues with your TFN application.

How to Do It?

Applying for a Tax File Number (TFN) in Australia is a straightforward process. You can choose to apply either through the Australian Taxation Office (ATO) website or by visiting an ATO office. Here are step-by-step instructions for both methods:

Applying for a Tax File Number (TFN) through the ATO website:

Step 1: Gather the necessary documents

Before starting your application, ensure you have the following documents and information ready:

  • Your passport, Australian visa, or Australian citizenship certificate
  • Your Australian residential address
  • Your contact details (phone number, email address)

Step 2: Access the ATO website

Visit the official ATO website at www.ato.gov.au 

Step 3: Navigate to the TFN application page

On the ATO website, search for “Apply for a TFN” or navigate to the TFN application page directly.

Step 4: Read the instructions and eligibility criteria

Carefully review the instructions provided on the TFN application page. Make sure you meet the eligibility criteria and understand the information required for the application.

Step 5: Start the online application

Click on the option to apply online. You will be directed to an online form.

Step 6: Fill in the application form

Provide the requested personal details, including your full name, date of birth, gender, and contact information. Enter your residential address and the type of visa you hold if applicable.

Step 7: Provide identification details

Enter the details of your identification documents, such as your passport number or Australian visa details. Ensure the information is accurate and matches the documents you possess.

Step 8: Answer the eligibility questions

Respond to the eligibility questions provided in the application form. These questions help determine your eligibility for a TFN.

Step 9: Submit the application

Carefully review all the information you have provided. Once you are certain that everything is accurate, submit your TFN application.

Step 10: Receive your TFN

After submitting your application, the ATO will process your request. You will receive your TFN via mail to the Australian residential address you provided in your application. This typically takes a few weeks.

Applying for a Tax File Number (TFN) through the ATO office:

Step 1: Gather the necessary documents

Collect the required documents, including your identification proof (passport, visa, or citizenship certificate) and proof of address (e.g., utility bill, lease agreement).

Step 2: Find the nearest ATO office

Visit the ATO website or contact the ATO helpline to find the nearest ATO office to your location.

Step 3: Schedule an appointment (optional)

While not always necessary, it is recommended to check if the ATO office you plan to visit requires appointments. If appointments are necessary, book one accordingly.

Step 4: Visit the ATO office

Arrive at the ATO office at your scheduled appointment time or during office hours if appointments are not required.

Step 5: Collect and fill out the application form

Request a Tax File Number (TFN) application form from the ATO office staff. Fill out the form with your personal details, contact information, and identification details.

Step 6: Submit the application form and documents

Submit the completed application form along with the required identification documents to the ATO office staff. They will verify your information and process your TFN application.

Step 7: Receive your TFN

Once your application is processed and approved, the ATO will issue your Tax File Number (TFN). They will either provide it to you immediately at the office or send it via mail to your Australian residential address.

Remember to keep your Tax File Number (TFN) confidential and secure. It is a unique identifier for your tax affairs in Australia, and it is important to use it responsibly and only for authorized purposes.


Congratulations, you’ve cracked the code! You’re now equipped to effortlessly apply for your Tax File Number (TFN) through the ATO website or by visiting an ATO office. Embrace the power of knowledge, conquer your tax journey, and experience the peace of mind that comes with understanding your TFN. Get set to ace your taxes and unlock a hassle-free financial future.

Related Link: All You Need to Know About Tax Deductions in Australia

  • Jaxon Rylah

    Jaxon Rylah, an Australian of diverse heritage, brings a wealth of expertise to his role as an Author at Taxly.ai. With over 5 years of experience in the field, Jaxon's deep understanding of accounting principles and regulations allows him to provide...

  • Kinza Zaheer

    I seamlessly blend creativity and strategic thinking to craft compelling content that captivates your audience and leaves them wanting for more. I meticulously optimize every word for maximum visibility and reach.



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