create a tax calculation worksheet in Microsoft Excel that can be used to determine the net tax amount (amount payable or refund due) for a resident Australian unmarried taxpayer for the 2017/18 income year.
Set up worksheet so the user can enter totals for the following items:
(i) taxable income,
(ii) PAYG paid,
(iii) non-refundable tax offsets (excluding low income tax offset)