FP, I might have got it a bit wrong. But not by much. The tax rate of 30% kicks in from $48,000 until $70,000, then after that it's capped at 33%. Not much higher though, than from $48,000 up, is it? And of course I assumed that other posters would know all about the scaled tax rate for lower incomes, I didn't need to spell it out.
http://www.ird.govt.nz/how-to/taxrat...etaxrates.html
Now when someone is earning really big money, like say over a million p.a., they should be paying tax on almost all of it at 33% once it's in their own hands, not a company (28%), which you cannot deny. It's at this point, or earlier, that I assume the born-to-rule right-wing National/ACT types go and see their friendly tax accountant for advice. And yes, there will be some Labour voters there too, but a lot less in proportion. And any Labour types will probably use property as a tax offset, not a deliberate use of a tax haven.
We could do an informal poll, you right-wing guys seem determined to support any tax-dodging ideas, what would the correlation be I wonder?