Banking & Money

How to get your TFN (and why you need it)

How to apply for your Tax File Number (TFN) in Australia as an international student: eligibility, documents, online application steps and what to do after.

Published 2025-05-10 · Updated 2026-02-14 · 4 min read

A Tax File Number (TFN) is your personal tax ID in Australia. You'll need it for any paid work.

Why You Need a TFN

Without a TFN, employers must withhold the highest tax rate (about 47%) from your pay. With a TFN, you'll pay the normal rate based on how much you earn.

How to Apply

Online Application

  1. Go to the ATO website
  2. Select "Apply for a TFN"
  3. Choose "Foreign passport holder"
  4. Fill in your details
  5. Submit — no documents needed to upload

Processing Time

  • Usually 28 days for the TFN to arrive by post
  • Apply as soon as possible after arriving

Common Questions

Can I start working before I get my TFN? Yes! You have 28 days to provide your TFN to your employer. Just make sure to give it to them once it arrives.

Is it free? Yes, applying for a TFN is completely free. Watch out for scam websites that charge fees.

Apply early and you'll be ready to start earning as soon as you find a job!