Use Excel for art and not for tax / financial reporting. There are better options.
Tatuo Horiuchi creatively used Excel to create art. As you would appreciate, in the eyes of the ATO & regulators, 'creativity' is frowned upon.
Tax and financial reporting tools exist to automate your tax and finance processes. Extend these tools with a layer of business intelligence and you will have a complete solution for both compliance and business planning.
Solutions exist for indirect taxes, single / consolidated company returns, Tax Effect Calculations, FBT, financial reporting, BEPS / CbRC, business intelligence and more
If any of these are on the horizon for your business - and there can be a lot to absorb - or you would just like a high level overview of all of these options and how they might assist you, feel free to contact me.