FIF Tax in New Zealand — Tax on Overseas Investments

FIF Tax in New Zealand — Tax on Overseas Investments

FIF stands for foreign investment fund. The acronym is used so often in tax guidance that it is easy to forget it is shorthand, but the full term matters: the foreign investment fund rules are the part of New Zealand tax law that governs how residents are taxed on overseas shares, overseas ETFs and interests in overseas unit trusts.

On paper, 2026 was the year the foreign investment fund threshold changed. A Budget announcement said the de minimis limit would rise, a bill was drafted to do it, and the change was backdated to the start of a tax year. Then the bill stalled, and the law governing overseas shareholdings today is the law that governed them before any of it was announced.

That gap between what was said and what is in force is the single most useful thing to understand about the FIF rules right now. Plenty of investors are holding numbers in their heads that were never enacted.

This guide sets out what FIF stands for, what the regime is for, where the threshold actually sits, and why a method built to simplify tax on overseas shares can leave you paying tax on money you never received.

How We Researched This Guide

The threshold and its history come from Inland Revenue's own material — its page on foreign investment fund rules and exemptions, its guide IR461 dated April 2026, and the Foreign investment fund changes information sheet published by Inland Revenue's tax policy unit.

We checked the legislative position rather than relying on commentary, because that is where the confusion lives. A proposal in a Budget document, a bill that has had a first reading, and a provision in force are three different things, and the difference between them is currently the most important fact in this area.

The Quick Summary (60-Second Version)

If you hold overseas shares, funds or ETFs, this is the short version.

• FIF stands for foreign investment fund.
• The FIF rules apply to New Zealand tax residents holding overseas shares, overseas ETFs, or interests in overseas unit trusts.
• They bite once the combined cost of those attributing interests exceeds the de minimis threshold.
• The current threshold is $50,000, as stated in Inland Revenue's guide IR461 dated April 2026.
• Budget 2026 proposed lifting it to $100,000, but the bill carrying the change lapsed, and it is not law.
• The threshold is measured on cost, and is breached if you exceed it on any single day in the tax year.
• Under the fair dividend rate method, you are taxed on a deemed 5% of opening value whether or not you received a dividend.

What FIF Stands For, and What It Covers

In plain terms, a foreign investment fund is an overseas investment held by a New Zealand tax resident. The label is deliberately broad: it captures direct holdings of foreign shares, units in overseas managed funds, and many exchange-traded funds listed offshore. The common thread is that the income arises outside New Zealand, so the usual New Zealand mechanisms for collecting tax at source — imputation credits and resident withholding tax — do not apply.

The rules apply to New Zealand tax residents who hold overseas shares, overseas ETFs or interests in overseas unit trusts. The legislation describes the interests that count towards the threshold as attributing interests, and the combined cost of those interests determines whether you are in or out of the regime.

What the FIF Regime Is Trying to Tax

New Zealand taxes its residents on their worldwide income, and overseas investments make that principle difficult. A New Zealand investor holding shares in a foreign company has no imputation credits, no New Zealand withholding at the source, and in many cases no dividend at all — a fund might reinvest everything and pay out nothing.

The foreign investment fund rules exist to close that gap. Rather than waiting for income to arrive, they attribute income to the investor each year and tax it. The regime applies to New Zealand tax residents who hold overseas shares, overseas ETFs or interests in overseas unit trusts.

A Change That Was Announced and Never Became Law

The position changed on paper during 2026 without the law moving at all.

What was proposed

Budget 2026, delivered on 28 May 2026, proposed lifting the de minimis threshold to $100,000, backdated to 1 April 2026. The Government said inflation had eroded the $50,000 threshold, last set in 2000.

Why the bill lapsed

The government introduced a bill carrying the change on 10 September 2026. It had passed only its first reading when Parliament was dissolved on 1 October 2026. A bill that has not completed its passage by the time Parliament is dissolved lapses, and this one did. A general election is being held on 7 November 2026.

So what applies right now

The figure in force is $50,000. That is the number stated in Inland Revenue's guide IR461 dated April 2026, and it is the figure New Zealand law applies today. If you are reading commentary that refers to a $100,000 threshold as though it were operative, that commentary is describing a proposal that did not become law.

The De Minimis Threshold, Measured at Cost

Below the threshold, the FIF rules do not apply, and you are exempt. Above it, they do. The practical difficulty lies in how you measure the threshold.

It is cost, not market value

The test is applied to the cost of your attributable interests, not to what they are currently worth. A portfolio bought cheaply years ago and since grown substantially may sit comfortably under the threshold on cost, while a smaller portfolio bought recently at high prices can breach it. Cost is the fixed figure; value is not.

One day over the line taints the whole year

The threshold is breached if your cost basis exceeds it on any single day during the tax year, which runs from 1 April to 31 March. If you cross the line in August and fall back below it by March, the FIF rules still apply to the whole year. There is no averaging and no end-of-year snapshot that rescues you.

That makes the day of acquisition the moment to think about it, not the end of the tax year. A single purchase can move you permanently into the regime, and a later disposal does not undo the breach.

Opting in early, and the commitment that follows

You can opt to apply the FIF rules voluntarily even while you are under the de minimis threshold. It is not a free choice — choosing it generally commits you to applying the rules in later years too.

How the Fair Dividend Rate Taxes Money You Never Received

The most counterintuitive part of the regime is the method most investors end up using. The fair dividend rate method deems you to earn 5% of your overseas portfolio’s opening market value each year. Tax is charged on that deemed 5%.

The word that matters is deemed. The calculation does not ask whether you received anything or how the portfolio moved. It takes the opening value, applies 5%, and treats that as your investment income for the year.

A falling portfolio still produces a bill

This is where the method bites back. If the portfolio drops 15% over the year, an investor using the fair dividend rate still pays tax on 5% of the opening value. The loss is real, the tax is real, and the two do not net off.

Nothing about that is a calculation mistake — it is the design. The method was built to remove the need to track every dividend, every currency movement, and every reinvestment inside an overseas fund, and it accepts that, in some years, the result looks harsh in exchange for that simplicity.

The comparative value alternative

Other methods are available, and the comparative value method is the obvious comparison. It taxes the change in value over the year plus dividends received. A portfolio that did not move and paid no dividends gives zero FIF income under the comparative value method, whereas the fair dividend rate method would still tax the deemed 5%.

Which method suits you depends on what the portfolio does. In a flat or falling market, the comparative value method can produce a much lower figure, and in a rising one it can produce a higher one. That trade-off is why both methods exist.

Dividends That Stay Taxable Regardless

It would be reasonable to assume that falling under the de minimis threshold means no tax at all on your overseas holdings. That is not the case. Dividends from FIF interests that fall under the de minimis exemption remain taxable when received.

The exemption removes the attribution regime, not the underlying tax on income. When you receive a dividend, it still counts as taxable income.

Questions You Might Have

What does FIF stand for?

FIF stands for foreign investment fund. The FIF rules are the part of New Zealand tax law that governs how tax residents are taxed on overseas shares, overseas ETFs and interests in overseas unit trusts.

Is the threshold $50,000 or $100,000?

It is $50,000. The $100,000 figure was proposed in Budget 2026 on 28 May 2026, carried in a bill introduced on 10 September 2026, which lapsed when Parliament was dissolved on 1 October 2026. The change is not law, and New Zealand applies the figure in Inland Revenue's guide IR461 dated April 2026.

Do I apply the test on my portfolio's value or what I paid?

On cost. The de minimis threshold is measured against the combined cost of your attributing interests, not their current market value. A portfolio that has grown a great deal can still be under the threshold.

What if I am only over the threshold for part of the year?

That is enough. The threshold is breached if your cost basis exceeds it on any single day in the tax year running 1 April to 31 March, and the rules then apply to the entire year.

Can I choose to use the FIF rules when I am under the threshold?

Yes, but the choice generally commits you to applying the rules in later years as well. Make this decision deliberately, not as a one-off.

Does the fair dividend rate method mean I pay no tax?

No — the opposite. Under the fair dividend rate method you are taxed on a deemed 5% of opening market value regardless of whether any dividend was received, and regardless of whether the portfolio rose or fell.

What Matters Most

The FIF rules are deliberate approximations. The fair dividend rate method trades accuracy for simplicity, and the de minimis threshold trades precision for a clear line. Both work as designed; neither is gentle when you are on the wrong side of it.

Two things are worth checking if you hold overseas investments. First, check your cost basis against the threshold, because a single day over the line can change the whole year. Second, check whether the figure in your head is the one in force.

The rate and threshold stated here are from Inland Revenue's published guidance. Where a figure could not be confirmed against that source, it is not in this guide.

This guide is general information only and is not financial or tax advice. The FIF rules can be complex and outcomes depend on your individual circumstances. Check the current position with Inland Revenue or a qualified tax professional before acting.