Well no sooner do I figure out a way to open an Aussie Account for the divs, but IRD are onto it...
http://www.radionz.co.nz/news/busine...sourced-income
Inland Revenue is warning taxpayers to make sure they declare all income from foreign sources.

The department says it's aware some people may have taxable foreign income held in overseas bank accounts which is accessible in New Zealand.
It says people who conceal such income are cheating other New Zealanders by not contributing their share of tax, and face stiff penalties. PricewaterhouseCoopers chairman John Shewan says it's a timely reminder from IRD. He says people who have offshore bank accounts are taxable as New Zealand residents, not only on the interest income they derive - which may be quite minor - but more also on the foreign exchange fluctuation.
Now I have no problem declaring the interest, but I am still not certain how we are realistically supposed to calculate foreign exchange gains on a transactional account. I guess if they ever audit me, they will be able to demonstrate. Although I suspect John may be over-complicating things for me.

I am taking heart from the fact that the IRD Alert does not appear to refer to tax on foreign exchange gains, but rather on those hiding income/assets altogether.

And here is the brief from IRD as to what tax liabilities are to be considered on a foreign account:
http://www.ird.govt.nz/international...tments/#credit