What is the difference between a TFN and an ABN in Australia?

A Tax File Number (TFN) and an Australian Business Number (ABN) serve different purposes for a sole trader: 1. **TFN (Tax File Number):** This is your personal reference number in the Australian tax system. Even as a sole trader, you use your personal TFN to lodge your annual tax return. You keep the same TFN for life. 2. **ABN (Australian Business Number):** This is a public identifier for your business. It doesn't replace your TFN. You use it for business dealings like invoicing, registering for GST, and dealing with the ATO on business matters. As a sole trader, your business income is part of your personal income. You report both on your individual tax return using your TFN, but you list your ABN-related business income in the supplementary section.

• TFN is for personal tax identification
• ABN is for business identification and invoicing
• Sole traders use their personal TFN for all tax lodgments
• You must provide your ABN to other businesses to avoid withholding tax
• Both are managed by the ATO