Australian Taxation Office. As well as general taxation information, contains Bills and Explanatory Memoranda, GST transitional fact sheets, Fringe Benefits Tax (FBT) products and information on law reform.
The Tax Office has produced a new online checklist for people who are starting their own business or who are thinking of doing so. The 27-point online checklist covers most things new business owners need to know, including applying for an ABN, registering for a tax file number or GST, record keeping, withholding tax, paying wages and super for employees, managing cash flow and creating the best legal structure for a business.
NSW Office of State Revenue for information on payroll tax, etc.
Dunn & Bradstreet, through its ABNsearch facility, is a free service to help you check the ABN number and registered details of any business. As all invoices you receive that include GST must also quote an ABN number, you may want to make sure that the ABN number quoted is correct in order to be confident your claim for input tax credit on the GST component of the invoice is legitimate.
ABN Lookup provides access to the publicly-available information provided by businesses when they register for an Australian Business Number (ABN).
Taxation topics and tax reform (comment)
treasury.gov.au
Review of Business Taxation's Web service