Yes — effectively all mainstream KiwiSaver schemes are multi-rate PIEs. This has three practical consequences: Your job is to keep your PIR current with your provider. That single setting determines the tax on all your KiwiSaver earnings. Your KiwiSaver returns are already after tax. When you compare fund performance, check whether figures are before or after tax — after-tax outcomes at your PIR are what actually land in your account. The fund handles offshore tax complexity for you. Foreign shares held inside a PIE are taxed under the FIF rules within the fund — no $50,000 threshold tracking, no separate disclosures (see our FIF guide).

PIE Tax Explained: Why the 28% Cap Matters for NZ Investors

Q: What is a PIE?

A portfolio investment entity (PIE) is a type of NZ investment fund with its own tax treatment. Instead of you declaring the fund's earnings in your tax return at your marginal rate, the fund pays tax on your share of its income at your prescribed investor rate (PIR) — and the top PIR is capped at 28%. Almost every KiwiSaver fund is a PIE. So are most NZ managed funds, many term-deposit-like "PIE funds" offered by banks, and cash PIEs. This guide covers how the regime works as at July 2026, based on Inland Revenue's PIE guidance.

Q: What is a multi-rate PIE?

The kind of PIE most people interact with is a multi-rate PIE (MRP): it calculates tax separately for each investor at that investor's own PIR (0%, 10.5%, 17.5% or 28% — the 0% rate applies to entities like companies and charities, not resident individuals). The fund attributes income to you, deducts tax at your rate, and the returns you see in your fund balance are generally after tax. There are other PIE flavours — listed PIEs (some NZX-listed funds and companies) and foreign investment PIEs for non-residents — but the MRP is the workhorse behind KiwiSaver and mainstream managed funds.

What is a PIE?

A portfolio investment entity (PIE) is a type of NZ investment fund with its own tax treatment. Instead of you declaring the fund's earnings in your tax return at your marginal rate, the fund pays tax on your share of its income at your prescribed investor rate (PIR) — and the top PIR is capped at 28%.

Almost every KiwiSaver fund is a PIE. So are most NZ managed funds, many term-deposit-like "PIE funds" offered by banks, and cash PIEs. This guide covers how the regime works as at July 2026, based on Inland Revenue's PIE guidance.

Why does the 28% PIE cap matter?

New Zealand's personal income tax rates run up to 33% (income over $78,100) and 39% (over $180,000). PIE tax stops at 28%.

That gap is real money on investment income:

A person on the 33% marginal rate earning $10,000 of interest in a bank deposit pays about $3,300 in tax via RWT. The same income inside a PIE at a 28% PIR incurs $2,800 — a saving of $500 a year, every year.
On the 39% rate, the same comparison saves $1,100 a year per $10,000 of income.

This is why banks offer "PIE term deposits" alongside ordinary ones, and why higher earners in particular often route fixed-interest and fund investments through PIE structures. The cap is a deliberate policy setting, not a loophole — it was designed in 2007 so that saving through funds (especially KiwiSaver) would not be taxed more heavily than direct saving.

For investors on lower incomes the PIE regime is also fair rather than punitive: if you qualify for a 10.5% or 17.5% PIR, the fund taxes you at that lower rate. See our PIR guide for the current income thresholds.

What is a multi-rate PIE?

The kind of PIE most people interact with is a multi-rate PIE (MRP): it calculates tax separately for each investor at that investor's own PIR (0%, 10.5%, 17.5% or 28% — the 0% rate applies to entities like companies and charities, not resident individuals). The fund attributes income to you, deducts tax at your rate, and the returns you see in your fund balance are generally after tax.

There are other PIE flavours — listed PIEs (some NZX-listed funds and companies) and foreign investment PIEs for non-residents — but the MRP is the workhorse behind KiwiSaver and mainstream managed funds.

Is KiwiSaver a PIE?

Yes — effectively all mainstream KiwiSaver schemes are multi-rate PIEs. This has three practical consequences:

Your job is to keep your PIR current with your provider. That single setting determines the tax on all your KiwiSaver earnings.
Your KiwiSaver returns are already after tax. When you compare fund performance, check whether figures are before or after tax — after-tax outcomes at your PIR are what actually land in your account.
The fund handles offshore tax complexity for you. Foreign shares held inside a PIE are taxed under the FIF rules within the fund — no $50,000 threshold tracking, no separate disclosures (see our FIF guide).

How is PIE income treated at the end of the year?

For most people, PIE tax is a final tax — correctly-taxed PIE income does not push you into a higher tax bracket and does not need a tax return. Since 2020, Inland Revenue includes PIE income in the automatic end-of-year income tax assessment: if your PIR was too low, the shortfall is collected; if it was too high, the overpayment is credited or refunded. So errors self-correct, but only after the year ends — using the right PIR upfront is still better for your cash flow.

PIE vs direct investment: how to think about it

A simplified comparison as at July 2026:

Tax rate: PIE capped at 28% vs RWT up to 39% on direct interest — advantage PIE for earners above $78,100
Simplicity: PIE handles FIF and tax filing internally vs direct foreign holdings needing your own FIF calculations — advantage PIE
Control and cost: direct holdings have no fund management fee and you choose exact assets — advantage direct
NZ shares: imputation credits flow through both routes reasonably well — closer to neutral

Tax is only one input. Fees, diversification, liquidity and your own discipline usually matter more to long-run outcomes than the tax wrapper alone.

When to get professional advice

Consider speaking with an FSPR-registered financial adviser if:

You earn above $78,100 and hold significant interest-bearing investments outside PIEs
You are choosing between direct share ownership and PIE funds for a lump sum
You want your whole portfolio structure — KiwiSaver, funds, deposits — reviewed for tax efficiency

We connect New Zealanders with FSPR-registered advisers — get matched or browse the directory.

This guide is general information, not financial or tax advice. Rates and thresholds are as at July 2026 per Inland Revenue (ird.govt.nz). For decisions about your money, consult an accountant or an FSPR-registered financial adviser.