The below is from the annual report (YE 31/12/22).. you'll note...

The below is from the annual report (YE 31/12/22).. you'll note two items the - the "recognised" tax losses - the net amount of which sits on the balance sheet as a deferred tax asset.. and the "unrecognised" tax losses - which sits off the balance sheet (can't recognise on the balance sheet as an 'asset' until it is probable the loss will be utilised - they'll reassess at year end).

All that is to say - you need to add these two together (~A$200m ish).. they did $17m of PBT in 1H23 (tax expense of $5m) so that $5m comes off the below.. but by my math using the below there is still close to A$200m of losses and that is going to take some time to deplete.