Australian Taxation Office –Personal Tax

http://www.ato.gov.au/individuals/

Australian Taxation Office – Business Taxation 

http://www.ato.gov.au/businesses/

Australian Taxation Office Self Managed Superannuation

http://www.ato.gov.au/superfunds/

Office of State Revenue – QLD

https://www.osr.qld.gov.au/

Office of State revenue – NSW

http://www.osr.nsw.gov.au/