Tax File Number Format – TFN Application, Documents, Fees & Step‑by‑Step Guide

What is a Tax File Number (TFN)?

A Tax File Number (TFN) is the identifier used to match your income and tax records in Australia. If you’re searching for “tax file number format”, you’re usually preparing to start work, study, open an interest-bearing account, or lodge a tax return.

Eligibility: who needs a TFN

Eligibility and the correct application pathway depend on whether you are a resident, a foreign passport holder with work rights, a student, or a non-resident needing an Australian tax identifier.

• Starting a job in Australia (employee or contractor)
• International students working part‑time
• New arrivals with work rights (temporary or permanent)
• Lodging a tax return or managing tax records

Documents & Proof of Identity

Most pathways require identity proof. Keep your legal name and date of birth consistent across documents, and use your current postal address because TFN letters are typically delivered by mail.

• Passport and visa/work rights details (where relevant)
• Current Australian postal address
• Contact details for confirmations
• Supporting evidence for special cases (name change, minors)

TFN Types & Use‑Cases

Note: Final eligibility depends on your circumstances. Always follow official instructions.

How to Apply for Tax File Number

1. Choose the right pathway: resident, migrant/foreign passport holder, or outside Australia.
2. Prepare identity details: match name and DOB across documents; use your current address.
3. Submit the application: double-check spelling, passport/visa numbers, and contact info.
4. Complete identity checks: follow the official steps exactly where required.
5. Receive and store your TFN: keep the letter safe and share only when necessary.

Common mistakes that delay TFNs

• Mismatched spelling between passport/visa/application
• Using an old address (delivery is typically by post)
• Submitting duplicate applications without guidance
• Skipping required identity verification steps

Review carefully before submission to reduce rework.

Fee Details

Official TFN applications are generally free. Optional service fees cover private assistance only.

Government TFN applications are generally free. Optional service fees cover private assistance only.

Processing time & delivery

Timelines vary, but official guidance commonly suggests allowing up to about 28 days after a complete application and any required identity checks.

TFN Security & Scam Safety

Treat your TFN as sensitive personal data. Share it only when required (employer, bank, super fund, ATO) and be alert to impersonation scams asking for urgent payments or login details.

• Only provide your TFN for legitimate purposes.
• Avoid sharing TFN via untrusted links or social media.
• Verify calls/emails via official channels when in doubt.
• Store your TFN letter securely.

Tax planning basics after TFN

After you receive your TFN, keep good records for your tax return: income statements, deductions, receipts, and contractor invoices. For contractors, consider setting aside funds for tax.

• Track income and deductions all year.
• Understand PAYG withholding.
• Contractors: keep invoices and set aside tax.

Need help now?

Start with the application checklist or contact support with non-sensitive questions.