In today’s Fin (subscription required), Sinclair Davidson tries to resuscitate the claim that Australian taxpayers are suffering from severe bracket creep, a claim I refuted in my piece last week (over the fold). The case is so thin that he spends half of his article restating a version of the claim I’d already refuted, before admitting that it is spurious (this is the claim that the abolition of the old 66 per cent rate, by making 47 per cent the new top rate, put more people into the top tax bracket. While this is trivially true, it’s also clear that this change was the opposite of bracket creep).
Davidson’s second argument, involves an interesting redefinition of the terms of debate. The standard approach has been to look at either the real income level or the proportion of average weekly earnings at which the top rate is payable. The real income level has risen over time and the proportion of average weekly earnings has been roughly stable. Davidson instead looks at the proportion of taxpayers paying the top rate. Obviously, if pretax incomes become more unequal, as they did over the 1990s, this proportion will rise, and this is what he finds.
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