How to Apply for a Tax File Number (TFN) in Australia as a Student

When you start work in Australia, your employer will ask for your Tax File Number (TFN) within your first 28 days. The good news: it is completely free, takes about 10 minutes to apply online, and you will usually have it within two weeks.

This is general information only, not tax advice. The Afrovo team is not a licensed financial adviser or tax agent. For detailed tax questions, visit the ATO website or speak to a registered tax agent.

What Is a Tax File Number and Why You Need It

A TFN is a unique 11-digit number issued by the Australian Taxation Office (ATO). It identifies you to the ATO and your employer for tax purposes. Without one, your employer will be forced to withhold tax at the highest rate (typically 47%) from every pay cheque, which means you lose money unnecessarily.

If you are working part-time or casually as a student, you almost certainly need a TFN. Even if you earn below the tax-free threshold of AUD $18,200 per financial year (1 July to 30 June), having a TFN makes sure your employer withholds the correct amount of tax, and you can claim a refund at tax time if you have overpaid.

Step 1: Gather Your Documents

Before you apply, have these documents ready:

• •Your passport (or travel document).
• •Your student visa grant notification (the document that shows your visa was approved).
• •Your date of birth.
• •Your Australian address (even if it is temporary).
• •Your contact details (mobile number and email).

If your passport has expired but you still hold a valid visa, you can still apply using the details from that passport. You do not need an Australian driver's licence or other ID.

Step 2: Apply Online at the ATO Website

The easiest way to apply is online:

1. 1.Go to the ATO website and search for "apply for a TFN".
2. 2.Click the link to the online application form (you can also apply by phone if you prefer, but online is fastest).
3. 3.Select "Individual" as your application type.
4. 4.Choose "International student" or "Temporary resident" from the list of visa holders.
5. 5.Follow the prompts and fill in your personal details exactly as they appear in your passport and visa grant.
6. 6.Double-check every field before you submit, especially your name spelling and date of birth.

Step 3: Submit and Receive a Reference Number

Once you submit the form, the ATO will give you a reference number on the screen. Write this down or screenshot it. This is proof you have applied, and you can use it to track your application.

The ATO typically processes TFN applications within two weeks, sometimes faster. You will receive your TFN by email or post, depending on how you applied.

Step 4: Tell Your Employer

Once you have your TFN, give it to your employer straight away, even if they did not ask yet. Your employer is required to ask for it within 28 days of you starting work, but giving it early saves them admin work and ensures you are taxed correctly from your first pay.

Your employer will ask you to fill out a Tax File Number Declaration form (often called a "TFN Declaration"). This is a simple form that confirms you have provided your TFN. Do not worry if the form looks official; it is just a standard workplace document.

What If You Lose Your TFN or Forget It

If the ATO sent your TFN by post and you did not receive it, or you have lost it, contact the ATO on 1300 365 991 (this call is free). Have your reference number from step 3 ready. They can resend your TFN by email or post.

You can also check your TFN by logging into your myGov account and linking it to the ATO. This is also useful to check your tax file and see what information the ATO holds about you.

Applying by Phone Instead of Online

If you prefer to apply by phone or have issues with the online form, you can call the ATO TFN application line on 1300 364 991 (free call, Monday to Friday 9 am to 5 pm Australian time). Have your passport and visa details handy. You will usually get your TFN within 10 minutes over the phone.

Common Questions About the TFN Application

Q: Will applying for a TFN affect my student visa?

A: No. Applying for a TFN is not an immigration matter. It is purely a tax matter between you and the ATO. It will not be checked against your visa status or trigger any concerns.

Q: What if I do not have an Australian address yet?

A: You can use the address of your accommodation at that time, even if it is temporary (a hostel, a friend's place, or your university accommodation). The ATO can update your address later if you move.

Q: Can I apply before I have a job lined up?

A: Yes. You do not need to be offered a job to apply for a TFN. Many students apply when they first arrive in Australia, so they are ready when they find work. It costs nothing to apply early.

Q: How long is a TFN valid for?

A: Your TFN is valid for as long as you live in Australia and remain a resident for tax purposes. It does not expire. Even if you leave and come back later, the same TFN applies to you.

Q: What happens if I give my employer the wrong TFN?

A: Contact your employer immediately and provide the correct number. Ask them to update your records. Then log into your ATO account or contact the ATO to make sure your employment record is linked to the right TFN. The ATO can fix mismatches, but it is faster if you correct it early.

Keep Your TFN Safe

Your TFN is private. Do not share it with people you do not trust, and never post it on social media or leave it lying around. Only give it to your employer, your bank, and official Australian government agencies. Scammers sometimes use fake calls or emails claiming to be from the ATO to trick people into revealing their TFN. The real ATO will never ask for your TFN by email or unsolicited phone call.

If you receive a suspicious message claiming to be from the ATO, report it to Scamwatch.

What Comes Next

Once you have your TFN and start work, your employer will use it to send your tax information to the ATO throughout the year. At the end of the financial year (30 June), you will be able to lodge your tax return and claim any tax refund if you have overpaid. You can learn more about this in our guide to doing your first tax return as an international student.

For budgeting and money management advice while you study, visit our student finance hub for practical guides on tracking spending, building savings, and making your money last.

Summary

Applying for a TFN is straightforward and free. Do it online at the ATO website, have your passport and visa grant handy, and expect your TFN within two weeks. Once you have it, give it to your employer within your first 28 days of work. This simple step ensures you are taxed fairly and avoids having tax withheld at a high rate. Start the process early, keep your TFN safe, and you will be set up for smooth employment in Australia.

For more student money tips, visit the Afrovo student finance hub and the ATO website.