Income Tax NZ: Complete Guide to NZ Tax Brackets and How Tax Is Calculated

Income tax is a fundamental part of life for every working New Zealander — whether you’re on a salary, running your own business, or earning investment income on the side. Yet many people have only a vague sense of how much they actually pay, or why. This guide explains the current NZ tax brackets, walks through exactly how your income tax is calculated, and flags the practical things you need to know to stay on the right side of Inland Revenue (IRD). It’s general information, not tax advice — for your specific situation, always check with IRD or a tax professional.

How income tax works — and the current brackets

New Zealand uses a progressive tax system, so different portions of your income are taxed at different rates.

Your rates apply to your taxable income — broadly, gross income minus allowable deductions. Most income is taxable: wages and salary, self-employment and business income, rental income, bank interest, dividends (with imputation credits), and overseas income if you’re a NZ tax resident. Some income isn’t taxable — the sale of your family home in most cases, gifts and inheritances — though the bright-line test (currently a 2-year period, from 1 July 2024) taxes gains on residential investment property sold within it. This is the income-tax deep-dive; for an overview of all NZ taxes, see our tax rates guide.

How it’s calculated: a worked example

The easiest way to understand it is with an example.

PAYE and getting your tax code right

If you’re employed, you almost certainly pay through PAYE (Pay As You Earn) — your employer deducts income tax, the ACC earners’ levy and any student loan repayments before your pay hits your account, so most wage and salary earners don’t need to file a return. But your tax code matters: the wrong one means you underpay (and face a bill) or overpay (and wait for a refund). Common codes include M (main job, no student loan), M SL (main job with student loan), ME (main job, eligible for the IETC), S (secondary income), and SB (secondary income under $15,600). Since 2019, IRD automatically issues an end-of-year assessment (around May–July) using data from employers and banks — most people don’t need to do anything, but complex situations may need an IR3 return. You can model your take-home pay with our PAYE calculator guide.

Deductions alongside your tax

For most employees, PAYE also carries several other deductions — and the figures here changed recently, so they’re worth getting right.

NZ income tax brackets

2025–26 tax year, unchanged for 2026–27 (thresholds last raised 31 July 2024). Always confirm the latest with IRD.

Income range	Tax rate
$0 – $15,600	10.5%
$15,601 – $53,500	17.5%
$53,501 – $78,100	30%
$78,101 – $180,000	33%
$180,001+	39%

These are marginal rates, not flat rates. On $60,000, you don’t pay 30% on the whole amount — you pay 10.5% on the first $15,600, 17.5% on the next $37,900, and 30% only on the last $6,500. That works out to about $10,220 of income tax — an effective rate of ~17%, well below the 30% top marginal rate. There’s no tax-free threshold: tax applies from the first dollar.

KiwiSaver is covered in depth in our KiwiSaver guide.

Self-employed: provisional tax

If you’re self-employed, a contractor or running a business, PAYE doesn’t apply to your business income — instead you pay through provisional tax, essentially pre-paying your expected tax in instalments (usually three a year). If your residual income tax (RIT) is expected to exceed $5,000, you’ll need to register. There are several methods: the standard method (105% of last year’s RIT), the estimation method, and the accounting income method (AIM) through compatible software. Getting it wrong can trigger use-of-money interest, so plan carefully — and set aside roughly 25–30% of each payment for tax and GST.

GST for business owners

If your turnover exceeds $60,000 in a 12-month period, you must register for GST, currently 15% (voluntary registration can help below that if you have significant expenses). GST is separate from income tax — it’s collected from your customers and passed to IRD via regular returns. Our GST guide walks through the details.

Tax on investment income

Investment income is taxed by type. Bank interest is taxed at your marginal rate via Resident Withholding Tax (RWT) — you nominate your rate when opening an account. PIE funds (including KiwiSaver and many managed funds) are taxed within the fund at your Prescribed Investor Rate (PIR), capped at 28% — potentially lower than your marginal rate, so getting it right can save money. Shares and dividends from NZ companies come with imputation credits attached, while overseas shares may be subject to the Foreign Investment Fund (FIF) rules.

Common mistakes to avoid

Even with PAYE doing most of the work, watch out for: the wrong tax code (common with a new or second job); not declaring all income (rental, freelance, Airbnb and overseas income are all taxable, and IRD receives data from banks and overseas authorities); an incorrect PIR (too low means a bill; too high means no refund, unlike other overpayments); missed provisional tax instalments (use-of-money interest); and forgetting the bright-line test before selling an investment property.

Your next steps

The fundamentals are manageable once you understand the structure. Log in to myIR and check your tax code, PIR and any assessments; review your KiwiSaver PIR if your income has changed; if self-employed, set up a separate account for tax and GST; consider a registered tax agent if you have rental, overseas or business income; and bookmark IRD’s rates page, checking it each April as thresholds and levy rates can change. New Zealand’s tax system is genuinely one of the simpler ones in the developed world — no general capital gains tax, few deductions for most employees, and automatic assessments for the majority — and understanding how your tax is calculated puts you in a stronger position to manage your money and avoid surprises.

On overseas comparisons: if you’ve come across “income tax slabs,” Section 87A rebates or rupee thresholds, those are Indian rules under Indian law and have no bearing on your New Zealand tax. Always refer to IRD for NZ guidance.

Disclaimer: This article is general information about income tax in New Zealand, not tax or financial advice. Tax rates, thresholds, levy rates and credits are set by law and change over time (the figures here reflect the 2025–26 tax year) — always confirm the current figures and your specific obligations with Inland Revenue (ird.govt.nz) or a registered tax agent before acting.

Frequently asked questions

What are the current income tax rates in New Zealand?

For the 2025–26 tax year (unchanged for 2026–27), the five progressive brackets are: 10.5% on income to $15,600; 17.5% on $15,601–$53,500; 30% on $53,501–$78,100; 33% on $78,101–$180,000; and 39% over $180,000. You only pay each rate on the portion of income within that band. These thresholds were raised on 31 July 2024, so older figures ($14,000/$48,000/$70,000) are out of date.

Do I need to file a tax return in New Zealand?

Most salary and wage earners don’t — IRD automatically issues an end-of-year assessment using data from employers and banks. But if you have self-employment, rental, overseas, or other untaxed income above $200, you’ll need to file an IR3 individual return through myIR.

What’s the difference between marginal and effective tax rate?

Your marginal rate is the rate on your last dollar of income (e.g. 30% if you earn between $53,501 and $78,100); your effective rate is the average across all your income, which is lower. Someone on $75,000 has a marginal rate of 30% but an effective rate of around 19.6%.

How does provisional tax work?

If your residual income tax is expected to exceed $5,000, you pay provisional tax in instalments (usually three a year). The common standard method bases payments on 105% of last year’s RIT. Missing payments can trigger use-of-money interest, so set reminders and put money aside.

What is the Independent Earner Tax Credit (IETC)?

A credit of up to $520 a year for NZ tax residents earning between $24,000 and $70,000 who don’t receive Working for Families, a main benefit or NZ Super (the upper limit was extended from $48,000 to $70,000 in Budget 2024). The full credit applies to $66,000, then abates to zero at $70,000. Use the ME tax code to receive it through PAYE.

Is there a tax-free threshold in New Zealand?

No — tax applies from the first dollar, at 10.5% on income up to $15,600. There’s no personal allowance like some countries have, though the IETC gives a small credit to eligible earners between $24,000 and $70,000.