In TaxTank, payments to the ATO for personal income tax and any refunds are considered personal transactions. This is because they don't impact your current tax calculations.
To allocate these transactions from bank feeds, simply locate the payment or refund and select the 'Allocate' action. Then select the 'Personal' chart of accounts, and from the category dropdown select either 'Tax Paid' or 'Tax Refund', and then the 'Allocate' button.
That's it, you're done.