This is my takeThey had an income tax expenses at 30.6.2022...

This is my take

They had an income tax expenses at 30.6.2022 (according to the accounts) of $163m

Date for lodgement of the 30.6.2022 tax return was 31.10.2022 & payment due date is 1.12.2022

As they probably didn't pay tax in y/e 30.6.2021 due to c/f losses (which were used in arriving at the $163m due for y/e 30.6.2022) they may not have paid any PAYG instalments which means the whole $163m is due on 1.12.2022

$163m in tax paid allows a fully franked dividend of around $380m to be paid or in very round figures about 10-11c/share

Then, based on the lodged 30.6.2022 tax return the ATO will hit them up for PAYG instalments on a monthly basis so the tax paid monthly will add to the pile of tax paid hence allowing for more franking credits