NZ Income Tax Calculator 2025-26
Estimate your total New Zealand income tax across salary, rental income, dividends, and self-employment. Uses IRD 2025-26 tax brackets. 100% private — no data leaves your browser.
How New Zealand Income Tax Works (2025-26)
New Zealand uses a progressive income tax system administered by Inland Revenue (IRD). All sources of income — salary, self-employment, rental, dividends, and interest — are combined as your total taxable income, then taxed at progressive rates for the 2025-26 income year (1 April 2025 – 31 March 2026).
The 2025-26 IRD tax brackets are: 10.5% on the first $14,000, 17.5% on $14,001–$48,000, 30% on $48,001–$70,000, 33% on $70,001–$180,000, and 39% on income over $180,000. These rates have been stable since the 2021 introduction of the 39% top rate.
What This NZ Tax Calculator Covers
This calculator estimates your combined New Zealand income tax across five income types: employment wages, self-employment or business profit, net rental income (after expenses), dividend income (excluding imputation credits already paid by companies), and interest income from bank accounts. You can also enter any imputation tax credits to reduce your final liability.
Unlike the PAYE calculator which focuses on salary deductions, the income tax calculator is designed for individuals with multiple income sources — landlords, freelancers, investors, and those with side businesses alongside a day job. It uses the same IRD progressive tax brackets but calculates your full annual picture.
What's NOT Included
This tool does not calculate ACC earner levies, KiwiSaver contributions, student loan repayments, Working for Families tax credits, or the Independent Earner Tax Credit (IETC). For a complete pay packet calculation (salary only), use the NZ PAYE Calculator. Capital gains on most assets are not taxed in NZ unless you're in the business of trading — bright-line property test calculations are handled by the Bright-Line Tax Calculator.
Tips to Reduce Your NZ Tax Bill
Legitimate tax reduction strategies in NZ include: maximising KiwiSaver contributions (they reduce taxable income via salary sacrifice), contributing to a complying fund (PIE funds are taxed at your PIR, often lower than marginal rate), offsetting rental losses against other income, claiming all business deductions for self-employed income, and spreading income between family members using trusts or companies where appropriate. Always consult a tax agent or accountant for personalised advice.