Tax basics for small business

Working out if you need a TFN

If you have decided to operate your business as a sole trader, you use your individual TFN for both your business and personal dealings with us.

Most people already have an individual TFN, but if you don't, you need to complete a Tax file number application or enquiry for an individual (NAT 1432) and send it to us. You can phone us on 1300 720 092 and we will send you an application.

If you have chosen to operate your business through a partnership, company or trust, you will need a separate TFN. You can apply for a TFN when you register for an ABN.

Sections within Registering your business for tax purposes

• Common business tax registrations
• Working out if you need a TFN
• Working out if you need an ABN
• Working out if you need to register for GST
• Working out if you need to register for PAYG withholding
• Working out if you need other business tax registrations
• Changing your registration details
• Cancelling a registration
• Non-tax business registrations
• Your registration checklist