About Tax Calculator NZ
A free tool for one question: what is my tax for the year? Built and run by Crucible, an independent New Zealand company.
How the numbers are checked
Every rule comes from Inland Revenue: the tax brackets, the composite rates for 2024/25, the independent earner tax credit, RWT and PIR tests, provisional tax and the year-end assessment order. The PAYE figures come from the same engine as PAYE Calculator NZ, which follows IRD’s payroll specification.
Before any change goes live, the calculators are tested against Inland Revenue’s own published examples and must match to the cent.
Who runs it
Tax Calculator NZ is a product of Crucible, the company behind Calculate.co.nz, New Zealand’s largest free calculator and financial literacy site. For wider money questions, try Calculate.co.nz.
This site is not affiliated with Inland Revenue. It is a guide, not tax advice: for anything that affects your tax position, check with IRD or a tax adviser.
Rules in use
2026/27, from 1 April 2026 to 31 March 2027.
- 10.5%, 17.5%, 30%, 33%, 39%
- IETC: $520
- ACC: 1.75% · $156,641
Rules updated 10 November 2026.