Department of Finance and Administration (Commonwealth)
Department of Treasury (Commonwealth)
Australian Taxation Office (ATO)

Other Sites

CPA Online (Australian Society of Certified Practising Accountants)
Taxation Institute of Australia
ATP On-line
Foundation Law Practice Collections: Income
Finance and Treasury Association
Deloitte Touche Tohamatsu Australian Website
Australian Taxation Index (Flinders University)

State and Territory Revenue Offices

NSW Treasury Office of State Revenue
Department of Treasury and Finance
Victorian Government State Revenue Office
Office of State Revenue Queensland
Tasmanian State Revenue Office
NT Treasury