Ann: Appointment of Voluntary Administrators, page-41

https://www.ato.gov.au/General/Capi...n-a-company-in-liquidation-or-administration/

This link is from the ATO.

"You may be able to claim a capital loss if you're:

• a shareholder, and a liquidator or an administrator of a company declares in writing that they have reasonable grounds to believe there is no likelihood that shareholders will receive any further distribution for their shares"

Obviously this hasn't happened yet so I suspect it won't be until FY19 that people can crystalise the capital loss.