FIF and KiwiSaver in NZ (2026): How Overseas Shares Are Already Taxed Inside Your Fund

Your KiwiSaver fund is a PIE, so it applies the FIF rules on overseas shares at fund level using the fair dividend rate — which is why you never file a FIF return for shares inside it.

TL;DR: KiwiSaver funds are portfolio investment entities (PIEs), so they apply the foreign investment fund (FIF) rules on overseas shares at fund level, generally using the fair dividend rate (FDR) method — a deemed 5% of opening value. The fund handles the calculation and taxes it at your PIR (max 28%), so you do not file a FIF return for shares held inside your KiwiSaver. ¹²⁸

If you hold international shares somewhere — a US tech fund, a global index fund, maybe a few Apple shares bought directly — you may have heard about New Zealand's foreign investment fund (FIF) rules and wondered whether they apply to the overseas shares sitting inside your KiwiSaver too. It is a fair question, and the answer surprises a lot of people.

The short version is that the FIF rules absolutely do apply to overseas shares in your KiwiSaver — but your fund deals with them for you, behind the scenes, so there is nothing for you to file. This guide explains how that works, why it differs from holding the same shares directly, and what (if anything) the 2025–26 FIF reforms change.

What is FIF tax, and does it apply to my KiwiSaver?

FIF stands for foreign investment fund. The FIF rules are New Zealand's way of taxing overseas shares and similar offshore investments. Rather than waiting to tax a dividend or a capital gain when it happens, the rules generally tax a deemed return each year — a set percentage of the investment's value — whether or not you actually received any income.

So does this apply to the international shares inside your KiwiSaver? Yes — but not to you personally.

Your KiwiSaver fund is a portfolio investment entity (PIE), and a PIE that invests in foreign shares applies the FIF rules at the fund level ¹⁸. The fund is the one that runs the FIF calculation across all its overseas holdings, works out the tax, and deducts it. You, as a member, are simply attributed your share of the result and taxed at your prescribed investor rate (PIR) ⁸.

That is the key distinction worth holding onto: FIF rules apply to the overseas shares; the fund applies them, not you.

How KiwiSaver PIEs handle overseas shares (the FDR method)

When a PIE holds foreign shares, it generally taxes them using the fair dividend rate (FDR) method ¹.

Under FDR, the fund is treated as earning income equal to 5% of the opening market value of its foreign shares each year — regardless of what those shares actually paid in dividends or gained in value ². The 5% is a deemed figure, not a real return. The fund then attributes a slice of that deemed income to each member based on their holding, and taxes it at the member's PIR.

A worked illustration helps. Say your KiwiSaver has $40,000 of attributed foreign-share value at the start of the year:

Illustration only, based on the stated assumptions; actual amounts depend on your fund's holdings, your PIR and the fund's foreign tax credits. Returns are not guaranteed and the value of investments can go down as well as up.

Two things are worth noting. First, the deemed 5% is applied to the opening value, so it does not rise and fall with how the shares performed during the year. Second, the fund can usually offset some foreign withholding tax already paid overseas (for example, US tax on dividends) against the FIF tax, which is part of why your real tax cost is not a clean 5% line item you can see.

Why you don't file FIF returns for shares inside your KiwiSaver

This is the part that reassures most people. Because a KiwiSaver scheme is a PIE, the fund handles the FIF rules on your behalf, so members do not file their own FIF returns for overseas shares held inside the fund ⁸.

The PIE applies the FIF and FDR rules at fund level and taxes the income it attributes to you at your PIR ⁸. For most members, that PIE tax is a final tax — it is deducted inside the fund, it does not go in a personal tax return, and there is no separate FIF calculation for you to do.

Contrast that with holding overseas shares directly in your own name. Once your direct offshore holdings cross the de minimis threshold, you are the one who has to apply the FIF rules and account for the tax yourself ⁹. Inside KiwiSaver, that obligation never lands on you, because the fund has already absorbed it.

So if you have ever worried about a hidden FIF return lurking in your KiwiSaver paperwork, you can put that down. There isn't one.

Direct overseas shares vs KiwiSaver: the tax difference

The cleanest way to see what KiwiSaver does for you is to put the two situations side by side. The figure below compares holding overseas shares directly with holding them inside a KiwiSaver PIE.

Figure — FIF tax: direct overseas shares vs inside a KiwiSaver PIE

Source: IRD FIF and PIE rules ¹²³⁵⁸⁹. The de minimis threshold figure is the value in force at 1 March 2026; see the reform section below.

The de minimis point matters for direct holdings. An individual holding overseas shares directly does not have to apply the FIF rules if the total cost of their attributing FIF interests is NZ$50,000 or less ³. Above that, the FIF rules kick in. Inside a KiwiSaver PIE there is no member-side threshold to track — the fund deals with it either way.

There is also a rate angle. Foreign-share income inside a KiwiSaver PIE is taxed at your PIR, which is capped at 28% — below the 39% top personal income tax rate ⁵. Held directly, the same income would be taxed at your marginal rate, which can be higher. We cover the PIR side of this in detail in our guide to what PIR you should be on.

How fund-level FIF tax shows up in your returns

Because the FIF tax is dealt with inside the fund, you will not see a "FIF tax" line on a personal IRD assessment for your KiwiSaver shares. Instead, it shows up indirectly:

• It is baked into your fund's after-tax return. The performance figures your provider reports are generally after PIE tax, which already includes the fund's FIF calculation on its overseas holdings. How that flows through to what you actually keep is covered in our guide to KiwiSaver returns after fees and tax.
• It appears on your annual PIE tax certificate, which shows the income attributed to you, the tax credits, the tax paid and the PIR used — not a separate FIF figure, but the overall PIE tax that the FIF calculation feeds into.
• It is invisible in the unit price day to day, because the tax is attributed through the fund's pricing and settled at year end, on full withdrawal, or on transfer.

A practical consequence: a fund with a large slice of international shares carries a built-in FDR cost of up to roughly 5% of its overseas value taxed at your PIR each year, before foreign tax credits. That is one reason two funds with similar headline returns can leave you with slightly different after-tax outcomes — the more detailed mechanics sit in our explainer on how PIE tax works on your KiwiSaver. It is not a reason to avoid global shares; it is simply part of the true cost of owning them, and it applies whether you hold them in KiwiSaver or directly.

Does the 2025 FIF reform change anything for KiwiSaver?

There has been reform in this area, and it is easy to assume it shifts the ground under KiwiSaver. For most members, it does not.

Two changes are worth knowing about:

• The de minimis threshold is rising from NZ$50,000 to NZ$100,000 of overseas investments. This applies from 1 April 2026 (the 2026–27 tax year) ⁴. As at the 1 March 2026 date of this article, the threshold in force is still NZ$50,000 — a figure that had been unchanged since 2000 ³. This threshold only ever mattered for shares held directly; it has never applied to shares inside a PIE, so it does not change anything for KiwiSaver members.
• A new calculation method, the Revenue Account Method (RAM), was introduced on 30 March 2026 for recent migrants (those who arrived after 1 April 2024), with a proposal to extend RAM access to all NZ tax residents for unlisted foreign shares from 1 April 2026 ⁷. This is aimed at people who hold foreign shares directly — particularly migrants and those with hard-to-value unlisted holdings — not at the listed global shares your KiwiSaver fund typically owns.

So the headline reforms mostly help people with directly held overseas shares. KiwiSaver funds continue to apply the FIF rules at fund level using FDR, and the way your KiwiSaver is taxed is essentially unchanged. If you also hold shares directly, though, these changes could be relevant to your own return — which is exactly the kind of overlap worth getting a second opinion on.

When holding shares inside a fund is simpler than direct

None of this is an argument that one approach is "better" — direct investing and managed funds suit different people, and both have trade-offs. But on the FIF question specifically, holding global shares inside a KiwiSaver (or any PIE) is administratively simpler for a few clear reasons:

• The fund runs the FIF calculation, so there is no FIF return for you to file ⁸.
• There is no de minimis threshold for you to monitor as your overseas holdings grow ³.
• The income is taxed at your PIR, capped at 28%, rather than your marginal rate ⁵.

The trade-offs run the other way too: in a fund you do not choose the individual shares, you cannot time your own buying and selling, and you pay the fund's fees. Some people value the control of holding shares directly and accept the extra admin that comes with it. Others would rather the fund handled the tax plumbing entirely. There is no single right answer — it depends on your holdings, your other income, and how much complexity you want to manage.

If you hold overseas shares directly and have a KiwiSaver, the two interact in ways that are easy to get wrong — especially around the de minimis threshold and how your direct FIF income sits alongside your PIE income. That is the situation where a quick conversation tends to pay for itself.

Frequently asked questions

Do I pay FIF tax on the overseas shares in my KiwiSaver? The FIF rules apply to those overseas shares, but the fund handles the tax for you at fund level. You do not pay or file FIF tax separately — the fund attributes the income to you and taxes it at your PIR as part of normal PIE tax ¹⁸.

Do I need to file a FIF return for my KiwiSaver? No. Because your KiwiSaver scheme is a PIE, it applies the FIF rules at fund level, and members do not file their own FIF returns for shares held inside the fund ⁸.

What is the fair dividend rate (FDR) method? FDR treats the fund (or a direct investor) as earning income equal to 5% of the opening market value of its foreign shares each year, regardless of actual dividends or gains. The fund taxes that deemed income at your PIR ².

What is the FIF de minimis threshold, and does it affect KiwiSaver? For shares held directly, you do not have to apply the FIF rules if the total cost of your foreign holdings is NZ$50,000 or less (the figure in force at 1 March 2026); this rises to NZ$100,000 from 1 April 2026 ³⁴. It only applies to direct holdings, not to shares inside a KiwiSaver PIE.

Does the 2026 FIF reform change my KiwiSaver tax? For most members, no. The higher de minimis threshold and the new Revenue Account Method are aimed at people holding overseas shares directly. KiwiSaver funds keep applying the FIF rules at fund level using FDR ⁴⁷.

Is FIF income inside KiwiSaver taxed at a lower rate than direct shares? It can be. Inside a PIE, foreign-share income is taxed at your PIR, capped at 28%, which is below the 39% top personal income tax rate ⁵. Held directly, the same income is taxed at your marginal rate, which may be higher.

This article is general information only and is not personalised financial advice. It does not take into account your particular financial situation, goals or needs. Before acting, consider whether it's right for you and seek advice tailored to your circumstances. Returns are not guaranteed and the value of investments can go down as well as up. KiwiSaver is a long-term savings scheme; government contributions, contribution rates, withdrawal rules and tax (PIR) settings are set by the Government and can change — figures are correct as at 1 March 2026, and you can check current rules at ird.govt.nz. Smiths Financial does not provide tax structuring or accounting advice on directly held overseas shares — please consult an appropriately authorised professional. Craig Smith Business Services Ltd (FSP712931), trading as Smiths Financial, holds a Class 2 licence issued by the Financial Markets Authority and is a member of the Financial Dispute Resolution Service (FDRS). Written by Henry Smith, Financial Adviser; reviewed by Craig Smith, Principal Adviser. Last reviewed 1 March 2026.