How much capital do I need to retire comfortably on ?

[fungus pudding]

If you want to reduce taxes on the wealthy, then presumably you must assess a tax based on wealth in the first place. Not all those on higher incomes are wealthy; not all those with wealth have high assessable incomes.

Let me spell it out a little clearer - reduce taxes on those who opt out of the pension - simply make superannuation optional.
That's a lot fairer for those who have made the effort to build their own super, either through hard working, smart working, investing or saving. Also not so ridiculously harsh on those with a terminal illness or planning an early exit.