Finding your TFN

Your tax file number (TFN) is your personal reference number in the tax and superannuation systems. Once you’ve got your TFN, it stays the same for life – you only get one!

You may need your TFN when:

• starting a new job

• applying for government benefits

• opening a bank account

• lodging a tax return

• applying for study loans.

So, let’s jump in and answer some of your top questions below.

Where can I find my TFN?

We get it, you don’t use your TFN often and not many people have it memorised!

Remember, if you already have a TFN, it’s yours for life. You can’t apply for a new one.

Here are some tips on how you might be able to find your TFN:

• Look under the personal details section of your ATO online account, if you've linked your ATO online services to to myGov this opens in a new window 

• Your TFN is listed under ‘My details’ in the ATO app this opens in a new window 

• If you’ve used a registered tax agent before, they’ll have it on file

• You may find it on your income statement or the payment summary from your employer

• Check any letters from us including your notice of assessment (NOA) that we send after you do your tax return

• Your TFN will be on your superannuation account statement

• Call our self-help line this opens in a new window  to request your existing TFN (if you have a voiceprint enrolled with the ATO)

If you still can’t find your TFN, you’ll need to get in touch this opens in a new window  with us directly, or lodge a tax file number - application or enquiry this opens in a new window 

How do I apply for a TFN?

It’s free to apply for a TFN this opens in a new window  with us. Depending on your circumstances, you can apply for a TFN in a few different ways. You can apply online, by post or in person through Australia Post or a Services Australia Centre.

You should receive your TFN in the mail within 28 days of us receiving your completed application and required documents. We’ll reach out if there’s an issue with your application - don't apply more than once as this can cause delays.

Don’t want to wait? You can apply online this opens in a new window  using a Strong Digital ID, such as myID, your TFN will most likely be displayed on screen straight away.

Can I track my TFN application once it’s lodged?

No, once you’ve submitted your TFN application there’s no way to track the progress.

I made a mistake on my TFN application – what do I do?

We can’t make changes to your TFN application after it’s been submitted. But don’t worry, once you get your TFN you’ll be able to update your details this opens in a new window  with us.

If you’ve recently moved or made a mistake with your address on your application, we recommend redirecting your mail with Australia Post. This will ensure your TFN is sent to the right address.

Don't submit a second application as this can cause delays.

If it’s been more than 28 days and you haven’t received your TFN you’ll need to contact us this opens in a new window .

I paid for a TFN online – have I been scammed?

Although you can get a TFN for free through us, it is legal for registered tax professionals to charge for this service. Rest assured, if you’ve paid for a TFN, you’ll likely still receive it in 28 days. You’ll need to allow extra time for the tax professional to send it on to you.

If you believe you’ve been scammed by someone impersonating us, you can submit a scam report this opens in a new window  and we’ll investigate.

Can I start work without my TFN

Yes, you can start work while waiting for your TFN, but your employer may withhold more tax until you provide it.

I think someone else has used my TFN - what do I do?

Your TFN is private. Don’t share it publicly or upload documents containing your TFN.

If you suspect misuse, contact us this opens in a new window  right away. We can review your record and take steps to protect your identity.