In relation to this FactCheck on the AiGroup’s Innes Willox’s statement that Australia has “one of the highest progressive tax rates in the developed world”, a spokesman for the AiGroup sent the following sources and comment:
Innes was referring to top marginal tax rates. Data for 2016 show that Australia has a relatively high top marginal tax rate (49%) but not the highest among OECD countries (Sweden is top, at 60%). The rub is that our top marginal rate cuts in at a relatively lower level of income than most other OECD countries (2.2 times our average wage).
The spokesman also sent a screenshot from an OECD report titled Revenue Statistics 2014 - Australia: