The accidental advantage nobody is exploiting
New Zealand’s top effective income tax rate is 39%. Australia’s, with the Medicare levy baked in, hits 47%. Australia has taxed capital gains since 1985. New Zealand has never introduced one. On paper, this country should be hoovering up every high-net-worth individual fleeing tighter settings across the Tasman and beyond.
It isn’t. And the reason is a self-inflicted wound called the Foreign Investment Fund regime.
The FIF rules tax New Zealand residents on 5% of the market value of their offshore shareholdings every year, regardless of whether they have received a cent in actual income. Any offshore portfolio above $50,000 triggers the obligation. For a migrant who sold a business in London or Sydney and holds a diversified global portfolio, this is not a rounding error. It is a structural reason to pick another country.
Four years of shelter, then the bill arrives
New Zealand does offer a transitional residence exemption that shields new migrants from tax on foreign passive income for their first four years. The intent was to smooth the transition. The effect has been to create a timer.
Chartered Accountants Australia and New Zealand tax leader John Cuthbertson said in March 2026 that high-value migrants are leaving once the exemption expires: “There are people coming off the transitional residence rules, foreign people that were looking to leave because of the tax settings that aren’t attractive.” CAANZ wants the window extended to ten years as a minimum stopgap. Revenue Minister Simon Watts has said that extension is “not under active consideration.”
So the pattern is clear. New Zealand attracts wealthy migrants with a four-year tax holiday, then hits them with a regime that taxes unrealised gains, and watches them relocate to jurisdictions that don’t.
The fix that might not fix anything
The government has not been entirely passive. In early 2025, it proposed a new “revenue account method” allowing some foreign investors with hard-to-liquidate assets to pay tax only on income actually received, rather than on a deemed 5% return. The estimated revenue cost was $2.5 million annually, trivial against a $169.8 billion revenue base.
But RSM’s analysis in March 2025 identified a catch: under the new method, capital gains would be taxed at the marginal rate of up to 39%. RSM noted that “the taxation of capital gains at the marginal tax rate (which can go up to 39%) may be seen as too high compared to the capital gains tax rates in many foreign jurisdictions.” When Singapore’s rate is zero and Dubai’s is zero, a 39% rate on realised gains is not a compelling pitch.
The cure is nearly as bad as the disease for anyone with genuine global mobility.
Treasury is already preparing the ground for something bigger
The more consequential signal came in November 2025, when Treasury’s chief strategist Struan Little stated publicly that the intellectual case against taxing capital income had collapsed: “The fundamental question is not whether to tax capital, but how.”
This is not a politician floating a trial balloon. This is Treasury’s senior strategic thinker signalling that the no-CGT orthodoxy is under formal reconsideration. The current government has ruled out a capital gains tax this term. But for anyone making long-term investment decisions based on New Zealand’s capital settings, Little’s comments are a flashing amber light.
The fiscal pressure reinforces the direction. Treasury’s 2024/25 financial statements showed an operating deficit of $4.4 billion. Interim figures to October 2025 had core Crown tax revenue running $0.6 billion below forecast, with corporate tax down 10%. Net core Crown debt sat at $186.5 billion, or 42.8% of GDP. A government running deficits on a narrow tax base has an obvious structural incentive to broaden it.
The window is real but closing from both ends
New Zealand’s competitive position on capital taxation is genuine. No CGT, no wealth tax, and a top rate eight percentage points below Australia’s effective rate give it a clear edge for the capital-rich. But the FIF regime actively repels the people this gap should attract, the proposed fixes are too timid, and Treasury is openly signalling that the broader settings may not survive the next electoral cycle.
For business advisers, wealth managers, and the migrants themselves, the calculation is straightforward. The opportunity exists now. The question is whether New Zealand will still offer it in three years. The smart money is acting on the assumption it won’t.
Sources
- Newsroom: High-value migrants quitting NZ after 4-year tax honeymoon (2026-03-20)
- BusinessDesk: How tax rules discourage foreign investor migrants to NZ (2025-01-06)
- BusinessDesk: Chief Treasury strategist says it’s no longer about whether we tax capital, but how (2025-11-21)
- RSM: A Taxing Welcome? How NZ plans to rethink its FIF rules to attract global wealth (2025-03)
- NZ Herald: Government proposes tweaks to FIF regime
- Treasury: Interim Financial Statements October 2025 (2025-12-04)