ABN essentials

Australian Taxation Office information about the Australian Business Number (ABN), a single identifier for all business dealings with the tax office and for dealings with other government departments and agencies.

http://ato.gov.au/businesses/pathway.asp?pc=001/003/021&mfp=001&mnu=59#001_003_021

Apply for an ABN (Australian Business Number)

The Australian Business Register (ABR) is a publicly available, online database that contains some of the information that is provided by businesses when they register for an Australian Business Number (ABN). Apply for an ABN and access and update your Australian business number (ABN) details online.

http://australia.gov.au/service/apply-for-an-abn-australian-business-number

Australian company numbers

Australian Securities & Investments Commission (ASIC) page with information about Australian Company numbers and where they must appear.

http://www.asic.gov.au/asic/asic.nsf/byId/PMIDCA256AF60076AF11CA256AF6007E6325?opendocument

How to register a company

Australian Securities & Investments Commission page with information about what you need to know when you're starting a company, for example, choosing your name and sending ASIC the right form.

http://www.asic.gov.au/asic/asic_infoco.nsf/byheadline/Starting+a+company+or+business?openDocument

Lodge company documents online with ASIC

Officeholders and registered agents can lodge company documents online with ASIC.

http://australia.gov.au/service/lodge-company-documents-online-with-asic

Lookup an Australian Business Number (ABN)

ABN Lookup provides access to the publicly available information provided by businesses when they register for an Australian Business Number (ABN).

http://australia.gov.au/service/lookup-an-australian-business-number-abn

Running your company

Australian Securities & Investments Commission page with information for companies about running a company and complying with the Corporations Act.

http://www.asic.gov.au/asic/asic_infoco.nsf/byheadline/Home+Page?openDocument

Search ASIC registers for company information

The free registers of the Australian Securities & Investments Commission provide information about companies and people they register or licence plus other matters.

http://australia.gov.au/service/search-asic-registers-for-company-information

Thinking of starting a business

Do you have an idea for a new business venture? Proper planning is the key to turning your dreams into reality. business.gov.au provides a list of issues to consider when you're thinking of starting a business.

http://www.business.gov.au/Howtoguides/Thinkingofstartingabusiness/Pages/default.aspx