I liked this part in particular (my bold):
The most obvious reason why the top 1 per cent or 10 per cent pay a higher share of tax is that they receive a much higher share of taxable income. Tax Office figures show that in 2015–16 the highest 1 per cent of income taxpayers — just over 100,000 people earning $330,000 or more per year, which adds up to about $72 billion of taxable income, or an average of roughly $720,000 per taxpayer — paid 16.9 per cent of net tax but received 9.6 per cent of all taxable income. (After their income taxes, that 1 per cent of taxpayers still netted about 7.2 per cent of all after-tax income.)Puts all of the "but the rich pay too much tax" whiners into perspective.
So even if Australia had a completely flat tax — a single rate with no tax-free threshold — very high–income earners would still pay close to 10 per cent of all income taxes. They pay 16.0 per cent rather than 9.6 per cent because Australia has a progressive income tax scale: the rate of tax paid increases as the taxpayer’s income increases.
Whiteford is like the perfect antidote to Sinclair Davidson, Adam Creighton, and David Leyonhjelm: knowledgeable, fair, reasonable and always polite.