Checklist for new business
The checklist covers basic tax issues you need to consider when starting a business, including registration requirements for companies. Although aimed at new businesses, the checklist is a useful reference for existing businesses.
Australian Securities and Investments Commission (ASIC)
You can use the ASIC website to register for an Australian Company Number (ACN) as an initial step and for proof of identity purposes when you register with the ATO. Visit asic.gov.au
Registering a company
A new company carrying on a business will need to register with the ATO and the Australian Business Register (ABR). You can register online at abr.gov.au
The site has Australian business number (ABN) and tax file number (TFN) online application forms with substantial embedded help functions and a number of information pages.