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PIE Tax Calculator

Calculate your prescribed investor rate (PIR) for portfolio investment entity funds. PIR rates are 10.5%, 17.5%, or 28% depending on your taxable income.

By Konstantin IakovlevPublished 28 March 2026Last reviewed
Updated 2026-27 FYData stays on your deviceIRD sourced data

About this calculator

This calculator implements PIE / PIR tax rates (10.5%, 17.5%, 28%) from Inland Revenue (IRD). Last consulted 1 April 2026. Verify the figures yourself by following the link.

Current NZ PIE tax rates (PIR)

FY 2026-27
  • Lowest PIR: 10.5% (income ≤$14k AND total ≤$48k)
  • Middle PIR: 17.5% (income ≤$48k AND total ≤$70k)
  • Top PIR (default): 28% (everyone else)
  • PIR vs RWT advantage: Up to 11% lower than RWT for top earners
  • Re-check PIR each April: Based on lower of last 2 years' income

Source: IRD — PIR

Disclaimer

This calculator provides estimates for general information purposes only. Results should not be relied upon as professional financial, tax, or legal advice. Tax rates and thresholds are based on publicly available IRD data and may change. Always consult a qualified tax agent or financial adviser for advice specific to your circumstances.

How PIE (Portfolio Investment Entity) tax works

PIE funds (most KiwiSaver and managed funds) tax investment income at your Prescribed Investor Rate (PIR) — capped at 28%, lower than top income tax rates.

  1. 1

    Determine your PIR based on income

    Income ≤$14k AND total ≤$48k: 10.5% · Income ≤$48k AND total ≤$70k: 17.5% · Otherwise: 28%

    Uses lower of two prior years' income — re-check each April.

  2. 2

    PIE income is taxed at PIR (not your marginal rate)

    PIE_tax = PIE_income × PIR

    Big win for high earners: 28% PIR vs 33-39% marginal on direct shares.

  3. 3

    Tax is deducted by the fund (final tax)

    Net_return = gross_PIE_return − PIE_tax

    Don't need to re-declare in your IR3 — fund deducts and pays directly to IRD.

  4. 4

    Wrong PIR creates problems

    If actual marginal > PIR → IRD bills you for the difference at year-end

    Always pick the correct PIR or you'll get a tax bill.

Worked example

Inputs: $50k PIE balance, 6% return, 28% PIR

Result: Gross return $3,000 → PIE tax $840 → Net $2,160.

Frequently Asked Questions

What is a PIE fund?
A PIE (Portfolio Investment Entity) is a type of investment fund that pays tax on investment income on behalf of its investors at their Prescribed Investor Rate (PIR) rather than at their personal income tax rate. KiwiSaver funds are PIEs, as are many managed funds and unit trusts offered by NZ fund managers. The key tax advantage is that PIE tax is capped at 28%, even if the investor's top marginal income tax rate is 33% or 39%. PIE income and tax are handled by the fund, so investors do not include PIE income in their personal tax return — it is a final tax. This structure was introduced in New Zealand in 2007 to encourage long-term saving by making investment funds tax-efficient for most New Zealanders. Source: IRD ird.govt.nz/income-tax/income-tax-for-businesses-and-organisations/types-of-business-income/pie.
What is my Prescribed Investor Rate (PIR)?
Your Prescribed Investor Rate (PIR) is the tax rate applied to your PIE investment income and is based on your taxable income in the two prior income years. For the 2026-27 tax year, the PIR bands are: 10.5% if your income in each of the two prior years was $0-14,000; 17.5% if your income was $14,001-48,000; and 28% if your income was above $48,000 in either of the two prior years. If you do not notify your PIE fund of your PIR, the fund defaults to 28%. It is your responsibility to update your PIR with your fund if your income changes between tax years. Choosing tō low a PIR means the fund underpays tax on your behalf and IRD may require you to pay the shortfall; choosing tō high a PIR means overpayment with no refund available. Source: IRD ird.govt.nz/income-tax/income-tax-for-businesses-and-organisations/types-of-business-income/pie.
What is the tax advantage of PIE funds?
The primary tax advantage of PIE funds in New Zealand is the cap on the tax rate at 28%, regardless of your personal income tax rate. For investors on the 33% marginal tax rate (income $70,001-$180,000), investing through a PIE saves 5 percentage points on investment income tax. For investors on the 39% top rate (income above $180,000), the saving is 11 percentage points. On a $100,000 investment generating 7% or $7,000 in income, an investor on the 39% rate would pay $2,730 tax through a PIE versus $3,870 at their marginal rate, saving $1,140 per year. It is important to use the correct PIR: if you use a PIR lower than your actual rate, the tax underpayment becomes a shortfall debt with no corresponding refund for overpayments. Source: IRD ird.govt.nz/income-tax/income-tax-for-businesses-and-organisations/types-of-business-income/pie.
Do I need to declare PIE income in my NZ tax return?
No. In New Zealand, PIE tax is a final tax, which means you do not include PIE income or PIE tax paid in your personal income tax return (IR3). The PIE fund calculates and pays the tax on your behalf using your PIR, and IRD treats this as fully satisfying your tax obligations on that income. This is one of the administrative advantages of PIE-structured investments such as KiwiSaver. However, you must ensure your PIR is correct and update it with your fund at the start of each new tax year if your income has changed significantly. If your PIR is set tō low, you may receive a tax shortfall notice from IRD. If tō high, unlike regular income tax where IRD issues refunds, PIE tax overpayments are generally not refundable. Source: IRD ird.govt.nz/income-tax/income-tax-for-businesses-and-organisations/types-of-business-income/pie.

PIE (Portfolio Investment Entity) funds like KiwiSaver and managed funds tax investors at their Prescribed Investor Rate (PIR) rather than their marginal tax rate. The maximum PIR is 28%, meaning high earners save tax compared to direct investment.

How this calculator works

PIR is determined by your income in either of the last two tax years. Options are 10.5%, 17.5%, or 28%. PIE tax is final — you do not declare PIE income in your IR3 return. If you use too low a PIR you must pay the shortfall; too high a PIR and IRD refunds the excess.

Prescribed Investor Rates (PIR)

PIR 10.5%Income up to $14,000 in both prior tax years
PIR 17.5%Income $14,001 – $48,000 in both prior years
PIR 28%Income above $48,000 in either of the two prior years
Maximum PIR28% (regardless of marginal rate)

PIE income is not included in your income tax return as it is taxed at source at your PIR.

Worked Examples

$20,000 PIE income, investor on PIR 17.5%

PIE tax $3,500. Compared to 33% marginal rate ($6,600), saving is $3,100.

  1. PIE income: $20,000
  2. PIR: 17.5%
  3. PIE tax withheld: $20,000 × 17.5% = $3,500
  4. Equivalent tax at 33% marginal rate: $20,000 × 33% = $6,600
  5. Tax saving from PIE structure: $6,600 − $3,500 = $3,100
  6. PIE tax is final — no further declaration required in IR3

$5,000 PIE income, investor on PIR 10.5%

PIE tax $525.

  1. PIE income: $5,000
  2. PIR: 10.5%
  3. PIE tax withheld: $5,000 × 10.5% = $525
  4. PIE tax is final — no IR3 declaration required

Built and maintained by Konstantin Iakovlev. Data sourced from the IRD and official New Zealand government sources.

Last reviewed: