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 – $14,000 | 10.5% |
| $14,001 – $48,000 | 17.5% |
| $48,001 – $70,000 | 30% |
| $70,001 – $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 $14,000 or less
- 17.5% — if your total taxable income is between $14,001 and $48,000
- 28% — if your total taxable income is over $48,000 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.