If you are trading as an individual, sole trader etc., then you can do your own tax return, if you wish to.
As a Limited Company you would
need to use an accountant to prepare the accounts.
Deadlines for individuals, and sole traders, are at the end of October. ie: You have 4 months in which to prepare and submit your figures.
However, if you register with a Tax Agent, they are allowed extra time, and this could extend to early the following year.
Tax Returns can be done online, and info on that is normally available from July 1st at
http://www.ato.gov.auSome tax info for businesses is at:
http://www.ato.gov.au/businesses/pathway.a...874#001_003_003From my previous experience at working with a firm of Accountants:
If you feel that you can do prepare your own business accounts, but want the tax side done by an agent, then use a Tax Agent. They will generally just work from your final figures.
However, if you use an Accountant, they will tend to go through everything, and effectively redo all that you have done. Cost will be much higher.
The firm of Accountants that I worked for, charged over $250 for an individual tax return, compared to most tax agents at the time who were charging about $50.