You can claim a loss once a CGT event occurs. This can be via a sale (at arms length) as MSN has outlined. Or it could be following a liquidator or receiver announcing that there is nothing left in the company or if ASIC de-registers the company. De-registration usually takes time as all tax matters need to be signed off by the ATO first. Liquidation could take some time.
De-listing is the first stage.
BTW, a CGT loss can only be offset against CGT gains and not from ordinary income.
The above is not Financial Advice.
BPG Price at posting:
0.9¢ Sentiment: None Disclosure: Held