Formats and related files
Tax and Welfare Analysis (TAWA) is the Treasury’s microsimulation model of the New Zealand personal tax and transfer system. It applies potential policy changes to individuals in its input data, and then scales up and aggregates the results so that they are representative of the New Zealand population. It is used extensively within Treasury and in external work related to tax and welfare policy analysis.
The TAWA methodology report provides a detailed overview of the TAWA model.