NZ has a progressive tax system where different income brackets are taxed at different rates as you earn more. Choosing the correct tax code is important to avoid unexpected tax bills. This tool provides general guidance for most situations, but it may not cover all scenarios. For more complex situations, such as a multitude of income streams or specific employment types with their own code (e.g., casual agricultural work or election day workers), please refer to the official IR330 guide on the IRD website or consult a tax professional.
