Want information about New Zealand as a "Tax Haven." e.g. what tax
breaks are offered to those who keep funds there, trade through
companies established there, what sort of privacy policies they have
compared to say Switzerland or Jersey, what is their international
status Vs. other tax havens that have a bad reputation or Vs. those
that are in the black list of the big western economies countries,
etc.

New Zealand is not, and never has been, a "tax haven". The authorities
are quite keen to obtain tax on any income from money deposited there,
and are willing to share any banking information with officials in
other countriesl, if there is any suspicion of illegal activity.