Australia's richest person Gina Rinehart (Image: AAP/Dave Hunt)

Data recently released by the Australian Tax Office (ATO) reiterated the sad fact that Australia’s highest earners often pay little or no tax.

Forty-five millionaires paid absolutely no tax in the 2018-19 financial year because they reduced their astronomical gross incomes to "taxable incomes" below the tax-free threshold by applying various legal deductions.

Guardian Australia’s Greg Jericho argued the data vindicates federal Labor’s 2019 election platform, which would have limited deductions for negative gearing and tax management. However, there has been little critical examination of the biggest deduction wealthy individuals are claiming: donations to charities.