Earlier this year, Inland Revenue made a point of cracking down on tradies doing untaxed cash jobs.
It's not fair on those who do pay tax, they said. "Just be honest, mate," they wheedled endearingly.
Cash jobs are a time-honoured tradition from which no tradie ever got rich. However, in socialist democracies such as ours (albeit eroded by the ravages of privatisation by which successive governments have progressively abdicated from the responsibilities we pay them to shoulder) we all understand the need to pay taxes to fund our essential collective institutions and services, such as police, fire, education, health, arts, public radio, justice, roads and welfare.
Tax lost from cash jobs amounts to nothing like the astronomical sums which might be collected from global corporates such as Apple, Google and Facebook whose massive presence and profits in our market are matched only by the amount of tax they manage not to contribute to the common good and by IRD's deafening silence on their moral responsibilities to do so.
The same goes for the potential tax bonanza which might be shared - both here and in the countries from which the secreted wealth originates - by the foreign trusts which, the Panama papers have revealed, use New Zealand as the "Switzerland of the Pacific" to hide the wealth of the super rich from tax collectors.