@jdonNo. You can't write em off yet. You can't do that until administrator or liquidators puts out a statement saying they are of no value. If you area trader via ATO definition at end of each day /month you could use last traded price as you mark to market valuation and at least have them down to under 10cent for tax purposes.
You still own the same number you did before they went into VA.. You can't trade them on market. You can complete off market paperwork but registry and brokers will not process it .
It is just a waiting game to see what happens between now and 2025.
Hopefully in December 24 there will be some information from VA and if it is all down the tube you may get lucky with it all wound up before June 24 so you can write it off but honestly probably the following tax year.
On the remarkably low chance that a a deal happens and somehow the company shell is recapatilised and relisted you may be able to transact on market and exit .
No advice at all given so seek pro advice .
You also have the option of selling off market to
https://www.delisted.com.au/https://www.sharegiftaustralia.org.au/ and could do so close to end of June 24 to realise capital loss but check with accountant etc.. These companies process the transfer when / if they are ever able to and rely on stat dec as well but are I believe acceptable as you have contracted sale and paid them a consideration.
(20min delay)