New Zealand Tax System Explained
Updated for 2026 IRD rates
Overview of the NZ Tax System
New Zealand's tax system is administered by the Inland Revenue Department (IRD). It operates on a self-assessment basis, meaning individuals and businesses are responsible for correctly reporting their income and claiming deductions. The tax year runs from 1 April to 31 March.
New Zealand does not have a capital gains tax (with some exceptions for certain asset sales), nor does it have inheritance or estate taxes. Instead, the system relies heavily on income tax, goods and services tax (GST), and a range of withholding taxes.
Progressive Income Tax System
New Zealand uses a progressive tax scale — the more you earn, the higher the rate of tax you pay on each portion of your income. For the 2026 tax year, the rates are:
| Taxable Income Band | 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 and over | 39% |
PAYE (Pay As You Earn)
PAYE is the system used to deduct income tax, ACC levies, KiwiSaver contributions, and student loan repayments directly from employee wages. Your employer calculates and withholds these amounts before you receive your pay. The tax deducted is based on your tax code, which reflects your personal circumstances.
Provisional Tax
If you have income not subject to PAYE — such as self-employment earnings or rental income — and your residual income tax (the tax left to pay after any credits) exceeds $5,000, you may need to pay provisional tax. This is typically paid in three instalments throughout the year:
- First instalment: 28 August
- Second instalment: 15 January
- Third instalment: 7 May
For the 2026 tax year, the interest rate on underpaid provisional tax is set at 8.72% per annum.
RWT (Resident Withholding Tax)
RWT is deducted from interest and dividends earned by New Zealand residents. Banks and financial institutions automatically deduct RWT at a rate based on your prescribed investor rate (PIR) for interest, or at 33% for dividends. You can claim a refund if too much RWT was withheld, or pay the difference if too little was deducted.
Resident Withholding Tax on Investments
Investors in managed funds, portfolio investment entities (PIEs), and certain other investment vehicles pay tax on their investment income. The rate depends on your PIR, which is based on your income level:
- 10.5% — if your total taxable income is $15,600 or less
- 17.5% — if your total taxable income is between $15,601 and $53,500
- 28% — if your total taxable income is over $53,500 or you're a trustee
GST (Goods and Services Tax)
GST is a broad-based consumption tax of 15% applied to most goods and services in New Zealand. If your business has a turnover of over $60,000 per year (or $250,000 for non-profit organisations in some cases), you must register for GST. You can choose to file GST returns monthly, two-monthly, or six-monthly.
Key IRD Numbers and Responsibilities
Every taxpayer in New Zealand needs an IRD number. You can apply online through the MyIR portal. Your IRD number stays with you for life and is used to track all your tax obligations, including PAYE, investment income, and tax refunds.
How Marginal Rates Work in Practice
Because New Zealand tax is progressive, your whole income is not taxed at your top rate — each slice is taxed at its own rate. Take a salary of $80,000 in 2025/26: the first $15,600 is taxed at 10.5% ($1,638), the next $37,900 at 17.5% ($6,633), the next $24,600 at 30% ($7,380), and the final $1,900 at 33% ($627) — a total of about $16,278, an effective rate of roughly 20.3%. This is why a pay rise that crosses $53,500 does not "cost you" 30% of your whole income — only the portion above the threshold pays the higher rate. The same logic explains marginal tax codes: your "marginal rate" (the rate on your next dollar) is what matters for decisions like extra work, second jobs, and claiming tax credits.
What the 2026/27 Year Looks Like
For the 2026/27 tax year (1 April 2026 – 31 March 2027) the five brackets are unchanged at the time of writing: 10.5% up to $15,600, 17.5% to $53,500, 30% to $78,100, 33% to $180,000 and 39% above. Two related rates do change: the default KiwiSaver contribution rate rises to 3.5%, and the ACC earner levy rises from 1.67% to 1.75% of liable earnings (capped at $156,641 for 2026/27). The prescribed investor rate (PIR) thresholds used for PIE investments follow the income brackets, so the 28% PIR now applies once taxable income exceeds $53,500. If you are a salary earner, PAYE is automatically adjusted by IRD's tax codes — you usually do not need to do anything, but checking your tax code after a pay change avoids a surprise at year end.
Related Guides
Deep dive — 2026 update
Marginal rate vs effective rate
| Income | Marginal rate | Average PAYE rate | Take-home after PAYE (before ACC and KiwiSaver) |
|---|---|---|---|
| $25,000 | 17.5% | 13.1% | $21,717 |
| $50,000 | 17.5% | 15.3% | $42,342 |
| $75,000 | 30.0% | 19.6% | $60,280 |
| $100,000 | 33.0% | 22.9% | $77,122 |
| $200,000 | 39.0% | 28.5% | $142,922 |
Average rates are always lower than marginal rates, and it is the marginal rate that governs the next dollar — an extra $1,000 of overtime at $100,000 is taxed at 33%, not 22.9%. Add the ACC earners' levy and KiwiSaver and the gap between gross and net at $100,000 is wider still.
The 2026/27 year at a glance
| Date | What happens |
|---|---|
| 1 April 2026 | Tax year 2026/27 begins; benefits, NZ Super and WfF rates rise; KiwiSaver default rate rises to 3.5% |
| 7 May 2026 | GST return for the period ending 31 March due (exception to the 28th rule) |
| 7 July 2026 | Individual IR3 returns and trust returns for the year ended 31 March 2026 due |
| 28 August 2026 | First provisional tax instalment (standard March balance date, two-instalment option) |
| 30 June 2027 | KiwiSaver contribution year ends — deadline to make up the $1,042.86 for the government contribution |
What is not taxed in New Zealand
- No capital gains tax generally — but the bright-line test taxes residential property sold within 2 years, and the FIF rules and some offshore investments are taxed as they rise in value.
- No inheritance or estate duty.
- No GST on financial services, residential rent, and a long list of exempt supplies.
- No tax on ACC lump-sum payments for permanent impairment, and no tax on lottery or gambling winnings.
Earners' levy and where it fits
The ACC earners' levy is collected through PAYE at a flat rate on liable earnings. In 2026/27 it is $1.75 per $100 (1.75%) on earnings up to $156,641, with a maximum levy of $2,741.22 — a rise from 1.67% in 2025/26 and set to rise again to 1.83% in 2027/28. Unlike income tax it is not progressive and there is no exemption for low earners.