PIE Funds in NZ: How They Work and Who They Suit

PIE structured funds receive some favourable coverage. The dominant reason is tax, or more precisely, the perception of a meaningful tax saving. The top Prescribed Investor Rate on a PIE fund is 28%, compared with a top personal income tax rate of 39% and a trust tax rate of 39% (since 1 April 2024). On the face of it, the gap looks compelling.

But the headline comparison is misleading. The actual tax saving from a PIE fund, compared with a well-managed direct portfolio, is far smaller than the 11 percentage point difference suggests. In many scenarios, it is close to zero. The real case for PIE funds rests on something else entirely: simplicity, convenience, and structural protections unrelated to the rate itself.

If you earn above roughly $78,100, invest outside KiwiSaver, or hold investments through a trust, the PIE structure is worth understanding. If your income places you on a 17.5% or 10.5% tax rate, your PIR already matches your personal rate, so the PIE tax cap offers no advantage. Trusts face a clearer case: since April 2024, the 39% trustee rate on retained income means the 11 percentage point gap to a 28% PIR is genuine and compounds over time. For individual investors on the top rate, the practical benefit is much narrower once you account for how overseas investments are actually taxed. We explain why below.

And if you think "PIE fund" just means KiwiSaver, it is worth reading on: KiwiSaver Schemes are PIE funds, but PIE funds extend far beyond KiwiSaver and in many ways offer more flexibility.

Before you ask, PIE funds have nothing to do with edible pies.

What Is a PIE Fund?

A Portfolio Investment Entity, or PIE, is a type of managed investment fund with special tax rules under New Zealand law. The PIE structure was created to simplify how investments are taxed and to encourage New Zealanders to save and invest through pooled funds.

In a PIE fund, an investment manager pools investors' money and invests it across a range of assets. Instead of paying income tax at your personal rate on returns earned within the fund, you pay at your Prescribed Investor Rate (PIR), capped at a maximum of 28%. The fund manager handles all tax calculations and payments to IRD on your behalf.

The amount of taxable income or loss allocated to each investor is calculated daily and attributed (deducted from your investment) at the end of each quarter.

Types of PIE Funds

Most managed funds in New Zealand are structured as PIEs. The two types you are most likely to encounter are:

Multi-Rate PIEs (MRPs) are the standard structure for managed funds, KiwiSaver Schemes, and most unlocked investment funds. Each investor is taxed at their own PIR, so two people in the same fund can pay different tax rates. This is the structure behind almost every retail PIE fund in New Zealand.

Listed PIEs are exchange-traded funds (ETFs) listed on the NZX, such as the Smartshares range. They carry the same PIE tax treatment but are bought and sold on the stock exchange like any other listed security. Listed PIEs suit investors who prefer a brokerage account over a managed fund application.

A few banks also offer term deposits packaged as PIE funds, which deliver the PIR tax benefit on interest income. These are separate from investment PIEs but use the same framework.

How PIE Funds Came About

A driving force behind the PIE structure was the introduction of KiwiSaver. The government wanted to encourage participation in managed funds, which meant removing some of the previous tax disadvantages of pooled investing. The PIE structure allows individuals to invest into a fund (including KiwiSaver Schemes) and not have to worry about completing a tax return for their investment income.

But KiwiSaver is only one application. Unlocked managed funds, many superannuation schemes, bank term deposit PIEs, and NZX-listed ETFs all use the same framework. For investors who want the tax benefit without the withdrawal restrictions of KiwiSaver (funds are generally locked until age 65), non-KiwiSaver PIE funds are often the more practical choice.

Prescribed Investor Rate (PIR)

In any PIE investment, you need to know your PIR, because it is your responsibility to advise your fund manager of the correct rate.

Your PIR is based on your taxable income over the previous two tax years ending on 31 March. Following the income tax threshold changes from April 2025, the PIR thresholds are:

• 10.5% if your taxable income is $15,600 or less and your combined income (including PIE income) is $53,500 or less.
• 17.5% if your taxable income is $53,500 or less and your combined income is $78,100 or less (and you do not qualify for the 10.5% rate).
• 28% if your income exceeds the above thresholds.

If you do not choose a PIR, you will default to 28%.

Getting the rate wrong has real consequences, and it is one of the most common tax mistakes New Zealanders make. If your PIR is set too high, you will overpay tax on your investment returns and will not receive a refund, because PIE tax is a final tax. If your PIR is set too low, you will face a tax bill from IRD at year end.

Errors are especially common after a pay rise, a move to part-time work, a redundancy, or when a trust's income profile changes. It takes two minutes to check, and the IRD's online PIR tool makes it straightforward. Review your PIR at least once a year, and sooner if your income has shifted.

PIE Tax Is a Final Tax

Tax on PIE investments works differently from other types of investment tax. The tax paid at the PIE level is usually a final tax, so individual investors do not have to return their PIE income or pay further tax on it.

This is one of the practical advantages most investors underestimate: no additional compliance burden, no tax return for the PIE income, no annual calculations to worry about.

The Tax Saving Is Smaller Than You Think

This is the section most PIE fund articles skip, or gloss over with headline rate comparisons. The 28% vs 39% gap is real on paper. In practice, the after-tax difference between a PIE fund and a well-managed direct portfolio is marginal.

Here is why.

Most PIE funds holding international shares calculate tax using the Fair Dividend Rate (FDR) method. The fund treats 5% of the opening market value of the overseas portfolio as taxable income each year, regardless of actual returns. At the top PIR of 28%, this produces a fixed tax drag of 1.40% per year on the overseas share component. This applies every year, in every market condition, with no exceptions.

In a year when the market falls, a PIE investor still pays tax on a deemed 5% return. If your portfolio drops 15%, the fund still deducts tax as though it rose 5%. There is no relief, no offset, and no option to defer.

Now compare this to holding the same shares directly above the $50,000 FIF threshold. An investor on the top 39% marginal rate using FDR faces a theoretical maximum tax drag of 1.95% per year (5% x 39%). That looks worse. But direct investors have an option PIE investors do not: they can elect the Comparative Value (CV) method in any year where it produces a lower result.

Under CV, if the portfolio declines in value, taxable income is zero. Tax owed is nil.

Consider a concrete example. An investor holds $60,000 in a US-listed ETF. During the year the portfolio falls 8%. No dividends are paid.

Under FDR: taxable income is 5% of $60,000 = $3,000. At a 39% marginal tax rate, the investor pays $1,170 on a portfolio that declined in value.

Under CV: the portfolio fell. Taxable income is zero. Tax owed is nil.

Same year, same investor, $1,170 difference. The PIE investor has no escape from the FDR outcome. The direct investor pays nothing.

Now reverse the scenario. The same portfolio returns 18%.

Under FDR: taxable income is $3,000. Tax at 39% is $1,170.

Under CV: taxable income is $10,800. Tax at 39% is $4,212.

In a strong year, FDR wins by a wide margin. In a down year, CV wins entirely. The ability to switch annually is genuinely valuable.

In practice, this is where we most often see investors make expensive mistakes. The distinction between FDR and CV sounds academic until the numbers are on the table. Over a full market cycle, roughly a third of years have historically delivered flat or negative returns for global equities. A direct investor switching methods annually may achieve a blended long-run tax drag somewhere in the range of 1.40% to 1.50%, which is very close to the PIE's 1.40%.

The difference, after accounting for a lifetime of investing, is marginal. For worked examples and the recently introduced Revenue Account Method for new migrants, see our full guide to New Zealand's FIF rules.

If you are weighing up how to structure overseas holdings across PIE and non-PIE vehicles, or unsure which method applies to your situation, this is exactly the type of decision where professional investment management adds value. Book a complimentary initial consultation to discuss your circumstances.

What PIE Funds Actually Offer

If the tax rate saving is marginal for individuals, why do PIE funds attract so much capital? Because their genuine advantages lie elsewhere.

Simplicity and Zero Compliance

This is the strongest practical case for PIE funds, and it is routinely undervalued.

With a direct portfolio above the FIF threshold, you need to track your cost basis, calculate FDR and CV each year, choose the better method, file an IR3 return, and pay the tax. You can outsource this to an accountant, but the cost and effort are still there.

With a PIE fund, the fund manager handles everything. Tax is deducted automatically. No return is required. For investors who value simplicity or lack the time or inclination to manage annual FIF compliance, this alone can justify the PIE structure.

No US Estate Tax Exposure

This one is less well known but significant for investors with material exposure to US-listed assets.

Non-US residents who hold US shares or US-listed ETFs directly face a potential 40% US estate tax on the value of those holdings above USD$60,000 on death. A New Zealand investor with a reasonably sized US share portfolio is well within range.

Holding equivalent exposure through a New Zealand-domiciled PIE fund removes this risk entirely, because the fund (not the individual) holds the underlying US assets. For investors with larger portfolios, this structural protection alone can be a compelling reason to use a PIE vehicle.

Wholesale Pricing

Because investors' funds are pooled, a PIE fund can access wholesale pricing on foreign exchange, brokerage, and custody fees. An individual investor buying shares directly pays retail rates for each of these.

In a well-run PIE fund, the scale advantage can be material, though the fund's management fee and any buy/sell spreads need to be weighed against the saving. Direct investors face brokerage too, so this is not a one-sided comparison.

The Trust Advantage

Since 1 April 2024, the trustee tax rate on retained income above $10,000 has been 39%, up from the previous 33%. A trust investing in a PIE at a 28% PIR pays 11 percentage points less on the investment income than it would on equivalent income retained and taxed at the trustee rate.

Unlike the individual investor comparison above, trusts investing through PIE funds do not have the option to switch to CV at the personal level. The rate saving for trusts is therefore more clear-cut, and it compounds over time. For trusts holding income-generating assets, this is one area where the PIE structure delivers a benefit close to the headline number.

The Drawbacks

PIE funds come with real costs and limitations. These should weigh as heavily as the benefits in any decision.

Fees Can Erode or Exceed the Tax Benefit

If the fees and charges within a PIE fund are too high, they can partly or entirely cancel out any tax advantage.

A fund charging 1.5% per year in management fees on top of underlying costs and buy/sell spreads might leave an investor worse off than a low-cost direct portfolio, even before accounting for the marginal tax rate difference. Careful analysis of the total cost is essential: look beyond the headline management fee to understand performance fees, administration charges, and the costs embedded in underlying investments.

Not All PIE Funds Are Created Equal

A New Zealand PIE fund generally has a lower tax burden on overseas investments, but only if it directly holds the underlying overseas shares. Some managers use feeder fund structures, where the PIE invests into an Australian Unit Trust or similar offshore vehicle rather than holding the shares directly. In these cases, the investor may not receive the full PIE tax efficiency.

If the tax benefit is a key reason for choosing a PIE fund, it is worth checking how the fund actually holds its overseas investments. The product disclosure statement (PDS) and the Disclose Register are the places to look.

A useful question to ask your provider directly: "Does this fund hold overseas shares directly, or does it invest through an Australian Unit Trust or other offshore vehicle?" The answer tells you whether you are getting the PIE tax treatment you expect.

Choice Can Be Overwhelming

At last count there were more than 50 providers licensed to offer PIE funds in New Zealand, and an extraordinary range of fund choices within them. Some are listed on the stock exchange as ETFs. Many are unlisted but accessible. All KiwiSaver Schemes are PIE funds. Many banks now offer term deposits packaged as PIEs.

Most individuals would benefit from professional guidance to navigate the choices, particularly for larger sums.

Transparency Requires Effort

With a PIE fund, you need to trust the fund manager. What exactly any given PIE fund is invested in, and the investment risks being taken, are not always obvious to a retail investor. Relevant information is disclosed on the Disclose Register, but drawing meaningful conclusions from the disclosures is not something most people would find easy.

PIE Funds for New Migrants and Returning New Zealanders

If you have recently arrived in New Zealand or returned after an extended period overseas, the interaction between PIE funds and your broader tax position is worth understanding.

From 1 April 2026, a new FIF calculation method called the Revenue Account Method (RAM) should be available to eligible new migrants and returning New Zealanders. RAM allows you to pay tax on overseas investments only when you sell them, rather than on a deemed annual return under FDR. The effective tax rate on gains is 27.3% for a 39% taxpayer.

This changes the PIE vs direct calculus. If you qualify for RAM on your directly held overseas shares, the case for holding those same assets inside a PIE fund is weaker, because RAM on direct holdings may produce a lower tax outcome than the PIE's fixed 1.40% annual drag under FDR.

The interaction between RAM, PIE structures, and any existing overseas portfolios you bring with you is genuinely complex. Professional advice before your first NZ tax filing year is worthwhile. Our FIF guide covers the Revenue Account Method in detail.

Why PIE Tax Rules Are Unlikely to Change

Tax rules are notorious for being subject to regular change. Despite this, most commentators agree it would be politically and practically difficult to modify PIE tax rates upward.

The top PIE tax rate of 28% mirrors the company tax rate of 28%. If PIE tax were raised, it would likely need to be done in conjunction with the company tax rate, particularly given how many PIE funds invest into New Zealand companies. New Zealand's company tax rate is already higher than in most comparable countries, including Australia, where companies with gross income of up to $50 million pay federal tax of 25%. Raising the rate further would risk driving corporate relocations offshore.

There is also political precedent. In 2022, an attempt was made to introduce GST to KiwiSaver Scheme fees. The public reaction was so fierce, backed by criticism from commentators and financial experts, the government reversed course within 24 hours of the tax passing its first reading in parliament. Any future government considering changes to PIE tax rates would be well aware of this history.

Even if PIE tax rates were increased, an investor in an accessible (non-KiwiSaver) PIE fund could simply withdraw their proceeds and invest in another manner.

Tax Should Not Wag the Investing Dog

Get the investment decision right first. Then make sure the structure around it is not quietly giving away returns you could have kept.

Tax efficiency should be the third most important investment consideration, behind the quality of the investment itself and the fees and charges associated with it. The right investment in a less tax-efficient structure will almost always outperform the wrong investment in a perfectly optimised one. Asset allocation, diversification, investment quality, fees, and your own behaviour as an investor all have a larger bearing on long-term outcomes than tax drag alone.

In practice, many well-constructed portfolios use a blend of PIE and non-PIE vehicles, each chosen for a reason specific to the investor's circumstances. Getting the mix right is where good investment management earns its keep.

Tax regulations change frequently and can be complex. Here at Become Wealth we are financial advisers, not accountants or tax advisers. Proceed carefully before taking any tax-based actions (or not taking them) and be sure to seek professional tax advice first.

PIE Fund Frequently Asked Questions

What are the current PIR rates?

Since 1 April 2025, the three PIR rates are 10.5%, 17.5%, and 28%. Your rate depends on your taxable income over the previous two tax years. The income thresholds were adjusted from April 2025 to align with the personal income tax bracket changes: the key boundaries are now $15,600, $53,500, and $78,100, up from $14,000, $48,000, and $70,000 previously. Use the IRD's online tool to check your rate.

What happens if my PIR is wrong?

If your PIR is too high, you overpay tax and will not receive a refund, because PIE tax is a final tax. If your PIR is too low, IRD will calculate the shortfall and include it as part of your end-of-year tax bill. Neither outcome is desirable. PIR errors are especially common after a pay rise, a move to part-time work, or a change in trust income. Check your rate at least annually.

Is KiwiSaver a PIE fund?

Yes. Every KiwiSaver Scheme fund is structured as a Multi-Rate PIE. However, PIE funds extend well beyond KiwiSaver. Unlocked managed funds, superannuation schemes, bank term deposit PIEs, and NZX-listed ETFs all use the PIE structure. For investors who want the tax benefit without KiwiSaver's withdrawal restrictions (funds are generally locked until age 65), non-KiwiSaver PIE funds are the more flexible option.

Do PIE fund holdings count toward the $50,000 FIF threshold?

No. New Zealand-domiciled PIE fund holdings are excluded from the personal FIF threshold calculation entirely. The fund manager handles FIF obligations at the fund level on your behalf. Your KiwiSaver balance, unlocked PIE fund investments, and any other NZ-domiciled PIE holdings have no bearing on whether the FIF regime applies to your other directly held overseas shares.

Can trusts invest in PIE funds?

Yes. Since the trustee tax rate increased to 39% on 1 April 2024, PIE funds have become particularly attractive for trusts. A trust investing in a PIE at a 28% PIR pays 11 percentage points less tax on investment income than it would on equivalent income retained and taxed at the trustee rate. At the 28% PIR, the PIE income is a final tax and is excluded from the trust's income tax return and from beneficiaries' taxable income. This is a straightforward investment decision, not a restructuring exercise.

Are PIE tax rules likely to change?

While no tax rule is guaranteed to remain unchanged, most commentators consider PIE tax rates politically difficult to increase. The top PIR of 28% mirrors the company tax rate, so any increase would likely need to be coordinated with a company tax change. New Zealand's company tax rate is already higher than in most comparable countries. The political backlash from the 2022 attempt to introduce GST to KiwiSaver Scheme fees, which was reversed within 24 hours, also serves as a cautionary precedent.

Should I invest in a PIE fund or hold shares directly?

There is no universal answer. A PIE fund offers simplicity (no tax return, no annual method decisions), no US estate tax exposure on underlying US holdings, and wholesale cost advantages. But PIE investors pay tax in down years when direct investors using CV would pay nothing, and fund fees can erode the marginal tax rate saving. Direct investing offers the ability to switch between FDR and CV annually, full control over holdings, and potentially lower total costs. In practice, many well-constructed portfolios use a blend of both. The right mix depends on your tax rate, portfolio size, the assets involved, and your appetite for compliance. If you are unsure, this is exactly the type of decision where professional investment management advice adds value.

The Bottom Line: PIE Funds

PIE funds are a useful tool, not a universal answer.

For trusts paying the 39% trustee rate, the tax case is genuine and clear. For individual investors, the tax rate saving over a well-managed direct portfolio is marginal at best, and it narrows further when you account for a PIE investor's inability to avoid tax in down years.

The real case for PIE funds is simplicity: no annual FIF calculations, no tax returns for investment income, no US estate tax risk, and professional management of the compliance burden. For many investors, especially those who do not want to manage the annual FIF process themselves, these are real and valuable benefits. But they are benefits of convenience and structure, not of a transformative tax saving.

Where PIE vs non-PIE decisions get expensive is not usually the tax rates themselves, but applying the wrong structure to the wrong portfolio, or paying high fund fees for a wrapper you do not need.

If you are not ready to act on any of this now, the single most useful step is to check your PIR is correct and understand roughly where your investments sit in terms of structure. That alone puts you ahead of most. And when the time comes to make a decision, or if you want a second opinion on your existing arrangements, our investment team can help. Book a complimentary initial consultation to get started.