The Tax Working Group (TWG) used an unreliable survey by the Department of Statistics as the basis for its argument that the majority of the proposed capital gains tax (CGT) will be paid by the top 20 per cent of households measured by wealth.

Repeatedly, since the final report was published, Sir Michael Cullen has quoted the "statistic" to the media that 82 per cent of the assets that will be subject to CGT are owned by the top 20 per cent of New Zealand households measured by net worth.

He goes on to state (as factual) the second 20 per cent of wealthy households will be responsible for another 11 per cent , then only 4 per cent for "middle" New Zealand.

In reality, this information is based on what most reasonable people would describe as little more than guess work.