From the ATO who should know.A capital loss cannot be offset...

From the ATO who should know.

A capital loss cannot be offset against income from other sources but must be offset against capital gains and may be carried forward to offset against future capital gains.

https://www.ato.gov.au/General/Capital-gains-tax/In-detail/Shares,-units-and-similar-investments/Claiming-losses-from-the-disposal-of-investments/?page=2