I'm sorry to hear that. The tax rates should have updated automatically as per the ATO's Tax Tables. Please let me know if you still cannot see the correct rate?
In order to process the Back Payment please see detailed instructions here.
So is your Pay Run reflecting the correct figure however your physical expense is incorrect? In this case you may need to manually process the missing payment and enter the second amount as an Expense to offset the Payroll Journal.
If you are unsure on how to do this please contact our Support Team for further assistance.