This year's Budget is surprisingly reliant on squeezing more tax from an economy that may not grow as fast as the Treasury forecasts it will, say accounting firms PricewaterhouseCoopers and Ernst & Young.
"Budget 2012 is premised on New Zealanders stumping up with a lot more tax without any clear growth agenda," said Jo Doolan, a senior partner at E&Y.
Doolan has been a leading critic of Inland Revenue's aggressive interpretation of existing tax law, which has redefined tax avoidance.
PwC's New Zealand chairman, John Shewan, said his firm was "surprised at the 29 per cent increase in tax and GST forecast over the next four years".
Read all of nzherald.co.nz's Budget coverage here.