How to Claim a KiwiSaver PIE Tax Refund From IRD in NZ (2026): Step-by-Step

Over-paid KiwiSaver PIE tax? For NZ-resident individuals the refund is mostly automatic at the year-end square-up. Here is how to check your PIE income in myIR, how long the refund takes, and how to stop it happening again.

If your KiwiSaver fund has been taxed at a Prescribed Investor Rate (PIR) that was too high, you have paid more tax than you owed on the income your fund earned. The good news for most people is that you do not have to lodge a claim at all. For New Zealand tax-resident individuals, the over-paid amount is worked out and returned as part of the automatic year-end income tax assessment.

This guide walks through how that square-up returns over-paid PIE tax, how to check your PIE income in myIR, how long a refund usually takes, what to do if it looks wrong, and how to set your PIR so the over-payment does not keep happening.

TL;DR: If you over-paid KiwiSaver PIE tax because your PIR was too high, NZ-resident individuals get it back automatically. At the year-end square-up IRD turns the over-payment into a PIE credit, uses it against any income tax you owe, and refunds the rest — usually within a few days of your assessment being processed ⁴⁷. This has only been refundable from the 2021 tax year onward ⁵.

Can I get a refund of over-paid KiwiSaver PIE tax?

Yes — if you are a New Zealand tax-resident individual and your PIR was set too high. The income your KiwiSaver fund earns is taxed at your PIR. The three PIRs for NZ-resident individuals are 10.5%, 17.5% and 28%, and 28% is applied by default if you have not given your provider a PIR ¹. When a higher rate than you qualify for is used, more tax comes out of your fund than the law requires.

Since the 2021 tax year (a change that took effect from 1 April 2020), using a PIR that is too high entitles you to a refund of the resulting over-paid tax ⁵. Before that change, PIE income from a too-high PIR was treated as a final tax and the over-payment was not refundable ⁵. So if your rate has been wrong for several years, the refundable portion is the more recent years, not the entire history.

One important boundary: this automatic year-end adjustment applies to NZ tax-resident individuals. Where PIE income has to be included in a tax return — for example for non-residents, or for entities such as companies or trusts — the over- or under-paid PIE tax is not adjusted automatically in the same way ¹⁰.

How does the year-end assessment return over-paid PIE tax automatically?

At the end of the tax year (income years run 1 April to 31 March), IRD compares the tax actually deducted at your PIR against the tax due at your correct rate, and adjusts the difference as part of your income tax assessment ⁴.

• If you over-paid, you have a PIE credit. It is first used to reduce any income tax you have to pay. Any remaining credit is refunded to you ⁴.
• If you under-paid because the rate was too low, the shortfall is a PIE debt added to the income tax you owe ⁴.

There is a useful detail on the under-paid side. If a PIR that was too low was used, the square-up caps the rate at the maximum 28% on your PIE income — rather than your full marginal rate, which can be as high as 39% — though any extra PIE tax to pay is still added to your end-of-year tax bill ⁶. For someone whose rate was too high, the practical point is simpler: the over-payment comes back.

Figure — Steps to get a KiwiSaver PIE tax refund

A numbered flow of how the refund reaches you:

Source: IRD PIE end-of-year calculation and income tax assessment process ⁴⁷.

Step-by-step: checking your PIE income in myIR

You do not have to wait passively. You can check what your providers reported and what rate was applied.

1. Log in to myIR at ird.govt.nz. PIE income is reported to IRD by your KiwiSaver provider and other PIE funds, so it should flow through to your income details.

2. Open your income tax account and look at your assessment or income summary for the relevant tax year (the one ending 31 March).

3. Find the PIE income lines. Each fund's attributed PIE income and the PIR applied to it should be visible.

4. Compare the PIR used against the rate you qualify for. Your PIR is the lower of the two rates you qualify for across the previous two income years ³. If a 28% rate was applied but your income sits inside a lower band, the rate was too high.

5. Check your contact and bank details. IRD pays refunds into the bank account it holds for you, and will let you know if it does not have your account details — so keep them current in myIR ⁷.

To work out which band you should be on, the 2026 thresholds are below.

Thresholds effective 1 April 2025; source: Inland Revenue ². Your rate uses the lower of the two rates you qualify for over the last two income years ³, so a recent drop in income can genuinely lower it.

If your taxable income and your combined income both sit under the relevant ceilings, 28% is too high. For a fuller walk-through of the bands, see our guide on what PIR you should be on and whether your PIR is too high.

What if a prior year was over-taxed before the 2020 rule?

This is where the history matters. The refund of over-paid PIE tax from a too-high PIR applies from the 2021 tax year (the rule took effect 1 April 2020) ⁵.

For tax years before that change, PIE income was treated as excluded income and the tax taken at a too-high PIR was a final tax — there was no mechanism to refund it ⁵. So if your PIR has been wrong for a long time, you cannot recover the over-payment from those earlier years. The refundable window is from the 2021 tax year onward.

That is also why fixing the rate now still matters even if the past is partly unrecoverable: every future year on the correct rate is a year you are not over-paying.

How long does an IRD PIE tax refund take?

Two timelines matter: when your assessment is issued, and how quickly the refund is paid once it is.

Most income tax assessments are issued through myIR between the last weekend in May and the end of July. If IRD is still waiting on income information from a payer, your assessment may not arrive until July, and refunds are paid as assessments are processed — so not everyone receives theirs at the same time ⁸.

Once your assessment is processed, IRD pays the refund into the bank account it holds for you, and you should usually have the money within a few days, though each bank has its own process ⁷.

The "few days" figure is the common experience; the "up to about 10 weeks" figure is IRD's outer published guidance for cases that need more processing ⁷⁹. If something needs checking, that is the window to keep in mind rather than assume a problem.

What to do if your refund looks wrong

If the refund is smaller than expected, or you do not see one, a calm check usually explains it.

• Confirm the year-end assessment has actually issued. Before late May to July it may simply not be done yet ⁸.
• Check whether the PIE credit was used against tax you owed. A PIE credit is applied to any income tax you have to pay first; only the remainder is refunded ⁴. If you owed income tax elsewhere, part of the credit may have offset it rather than landing in your account.
• Confirm your bank details are on file. If IRD does not hold your account details it will let you know via myIR, and the refund waits until they are supplied ⁷.
• Check the PIR that was actually applied. If the rate used was not as high as you thought — or was already correct — there may be little or nothing to refund.
• Allow for the processing window. Payments generally show in myIR within a few working days of the assessment, with IRD's outer guidance running to about 10 weeks for cases that need more work ⁹.
• Remember the pre-2020 limit. Over-payments from tax years before the 2021 year are not refundable, so an older over-payment will not appear ⁵.

If after all that the figures still do not reconcile, it is worth having someone read the assessment and your fund statements alongside each other.

Fixing your PIR so you stop over-paying

The square-up returns the past (back to the 2021 tax year), but it does not change the future. Your provider keeps deducting at whatever PIR it holds until you update it. That is the step most people miss.

1. Work out your correct band from the table above, using the lower of the two rates you qualify for across the last two income years ²³.

2. Log in to your KiwiSaver provider — through the provider's app or online portal — and update your PIR there.

3. Make sure your IRD number is on file with the provider. Without it, the default 28% rate is applied regardless of what you qualify for ¹.

4. Check joint investments separately, as these can apply the higher holder's rate.

5. Diarise an annual check. Incomes move with study, parental leave, part-time work and retirement, and the right PIR moves with them.

If you would rather not work through the bands yourself, our KiwiSaver Health Check steps you through it, or a KiwiSaver review can read the rate off your statements with you.

Frequently asked questions

Do I have to file a claim to get my KiwiSaver PIE tax refund? Generally no. For NZ-resident individuals the over-paid amount is worked out and returned as part of the automatic year-end income tax assessment — the over-payment becomes a PIE credit, which reduces any tax you owe and is otherwise refunded ⁴. People who must include PIE income in a tax return, such as non-residents or entities like companies and trusts, are not covered by this automatic adjustment ¹⁰.

How far back can I get a PIE tax refund? Back to the 2021 tax year. The refund of over-paid PIE tax from a too-high PIR applies from the change that took effect on 1 April 2020; before that the over-payment was a final tax and is not refundable ⁵.

How long does the refund take? Income tax assessments are usually issued between the last weekend in May and the end of July, and refunds are paid as assessments are processed ⁸. Once your assessment is processed, the refund typically reaches your bank account within a few days ⁷. IRD's outer published guidance for income tax refunds runs to about 10 weeks, with payments generally showing in myIR within 3 working days ⁹.

Why is my refund smaller than I expected? A PIE credit is first used to reduce any income tax you have to pay, so if you owed tax elsewhere, part of the credit may have offset it rather than being paid out ⁴. It is also worth checking the PIR that was actually applied and confirming your bank details are on file in myIR ⁷.

Will fixing my PIR refund the past automatically, or only fix the future? The year-end square-up handles past over-payments automatically, back to the 2021 tax year ⁴⁵. But your provider keeps deducting at the old rate until you change it, so you still need to update your PIR to stop over-paying going forward ¹.

What happens if my PIR was too low instead of too high? The square-up caps your PIE income at the maximum 28% rate rather than your full marginal rate, but any additional PIE tax to pay is added to your end-of-year income tax liability ⁶.

General information, not personalised financial advice. Seek advice tailored to your situation before acting. 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 2 March 2026.