Australian GST is 10% and New Zealand has 15%. NZ also charges GST on petrol tax (does Australia?). The top tax rate in Australia is fairly high and in NZ is 33%.
Not that a lowest rung CPL in NZ would be earning enough to pay the top rate and probably not the middle on either (that kicks in around NZ$40,000).
So the top tax rate in B.C seems to be (38%+13%+5%)= 56%.
Australia (45%+10%)= 55%
Plus Australia has just added this:
"The Abbott government’s deficit tax means top earners will face a 49 per cent marginal tax rate, the eighth highest among developed countries.
The May 13 budget is expected to include a 2 per cent “deficit tax” for people with taxable incomes above $180,000, increasing the 45 per cent top tax rate to 49 per cent, once medicare and disability levies are included."
Top rate of 49pc would make Australia 8th-highest tax nation in OECD
NZ (33%+15%)= 48%, so less tax but lower income to start with.