What Is a PIE Fund and How Is It Taxed in New Zealand?

If you have a KiwiSaver account, you are almost certainly invested in a PIE. But most New Zealanders do not fully understand what a PIE is, how the tax works, or why it matters for their investment returns.

Here is a plain-English explanation.

A PIE — Portfolio Investment Entity — is a type of managed fund that qualifies for special tax treatment under New Zealand law. The rules were introduced in 2007 to encourage New Zealanders to invest through managed funds rather than directly.

Common examples of PIEs include:

• KiwiSaver funds
• Managed funds offered by banks and investment managers
• Some term deposits and cash funds
• Listed PIEs (traded on the NZX)

The key feature of a PIE is that tax is paid at the fund level, based on each investor's individual tax rate — rather than the investor paying tax on distributions themselves.

Your PIR is the tax rate that applies to your PIE income. It is based on your taxable income from the two previous income years.

The maximum PIR is 28% — even if your personal income tax rate is 33% or 39%. This is the core tax advantage of PIEs.

For investors on the top personal tax rates, PIEs offer a meaningful saving.

Example: You earn $150,000 a year. Your marginal income tax rate is 39%. If you invest directly in shares and earn $10,000 in dividends, you pay $3,900 in tax.

If you invest through a PIE fund and earn the same $10,000, your PIR is 28% — you pay $2,800 in tax. That is $1,100 less on $10,000 of investment income, every year.

For someone investing $200,000 over many years, this difference compounds significantly.

The PIE fund calculates and pays tax on your behalf throughout the year. You do not need to include PIE income in your personal income tax return — it is already taxed at source.

This is different from most other investment income (like bank interest or direct share dividends), which you must declare in your tax return and pay tax on at your personal rate.

At the end of each tax year, your PIE provider will send you a tax certificate showing the income attributed to you and the tax paid. You keep this for your records but do not need to file it with IRD.

If your PIR is too low: You will have underpaid tax. IRD will assess the shortfall and you will need to pay the difference — plus use-of-money interest. You cannot use a lower PIR than you are entitled to.

If your PIR is too high: The excess tax is not automatically refunded. You need to include the PIE income in your tax return to claim a refund. This is one reason it is worth getting your PIR right.

When you open a PIE investment (including KiwiSaver), you nominate your PIR. You should review it each year — particularly if your income has changed significantly.

To calculate your correct PIR:

1. Look at your taxable income for each of the last two income years
2. Use the lower of the two years to determine your PIR
3. If your income in either year exceeded $48,000, your PIR is 28%

If you are unsure, it is generally safer to use 28% — you will not owe more tax, and you can claim a refund if you were entitled to a lower rate.

All KiwiSaver funds are PIEs. This means:

• Tax on your KiwiSaver investment returns is capped at 28%
• The tax is deducted within the fund — you do not pay it separately
• Your KiwiSaver balance grows on an after-PIE-tax basis

For high-income earners, the PIE tax treatment of KiwiSaver is one of the reasons it remains an attractive savings vehicle even beyond the employer contribution and member tax credit benefits.

Some PIEs are listed on the NZX and can be bought and sold like shares. These include some property funds and diversified investment funds.

Listed PIEs have slightly different rules — gains on the sale of listed PIE units are generally not taxable (unlike unlisted PIEs, where gains may be taxable depending on the fund's investments). This can make listed PIEs particularly tax-efficient for long-term investors.

PIEs are most advantageous when:

• Your personal income tax rate is above 28% (i.e. income over $70,000)
• You want a simple, low-administration investment structure
• You are investing for the long term and want returns to compound on an after-tax basis

For investors on the 10.5% or 17.5% PIR, the tax advantage is smaller — but PIEs still offer simplicity and professional management.

If you are deciding between investing through a PIE fund or directly (e.g. buying shares yourself), tax is one factor but not the only one:

For most New Zealanders investing in international shares, the Foreign Investment Fund (FIF) rules add complexity to direct investment. PIE funds that invest offshore handle FIF calculations internally, which is a significant administrative advantage.

Whether you are reviewing your KiwiSaver settings, considering a managed fund, or planning a larger investment portfolio, getting the tax structure right from the start makes a real difference to long-term returns.

Talk to Eastmure & Associates about your investment tax position. We work with investors across Christchurch and Canterbury to ensure their money is working as efficiently as possible.