KiwiSaver is a PIE (Portfolio Investment Entity) — which means your investment returns are taxed differently from ordinary income. Getting your PIR (Prescribed Investor Rate) right is the most important tax action most KiwiSaver members can take, and it’s free to fix if it’s wrong.
How KiwiSaver Tax Works
KiwiSaver providers are PIEs. Your investment returns are taxed inside the fund at your PIR — you don’t include them in your personal tax return. The provider handles the tax automatically.
This is advantageous because:
- Your KiwiSaver returns are taxed at a capped rate of 28% — even if your marginal income tax rate is higher (e.g. 33% or 39%)
- You don’t need to do anything at tax time for KiwiSaver — it’s handled by the fund
PIR Rates (2026)
| Annual income (taxable) | PIR |
|---|---|
| Up to $14,000 | 10.5% |
| $14,001–$48,000 | 17.5% |
| Over $48,000 | 28% |
Your PIR is based on your income from the previous two tax years — the lower of the two. If you’ve had a lower-income year recently, you may qualify for a reduced PIR.
The Risk of the Wrong PIR
- Too high: You overpay tax inside the fund — you cannot claim a refund
- Too low: IRD will assess you for the underpaid tax through your tax return, potentially with use-of-money interest
Setting the wrong PIR is the one KiwiSaver tax mistake worth actively avoiding. Review your PIR every year.
Guides in This Section
- KiwiSaver PIR Rate Explained — Which Rate Are You?
- KiwiSaver PIE Tax Explained
- How to Update Your KiwiSaver PIR Rate
- Is KiwiSaver Taxed at 65?
- KiwiSaver Tax Return NZ — What You Need to Do
- KiwiSaver Overseas Investment Tax (FIF Rules)