What are my legal deposit obligations? (Information from the National Library of Australia website)
If you have PUBLISHED your work, this is relevant to you.
Publishers in all Australian jurisdictions are required to deposit print and electronic publications with the National Library of Australia in accordance with the Copyright Act 1968. If both formats are available, electronic is preferred. The National Library does not collect audio-visual material.
Australian Government departments and agencies are required to deposit copies of their publications with the National Library of Australia under the Commonwealth Library Deposit and Free Issue Schemes (referred to as the LDS).
Once you have deposited an electronic publication to NED (National eDeposit), your obligations for national legal deposit have been fulfilled. If your state or territory legislation still requires a print copy, however, you will need to deposit this with your state or territory library. Information about state and territory requirements is below.