摘要:Australian personal income tax (PIT) currently faces major problems. Recent calls for {PIT} reform have been made from many quarters of Australian society. This paper reports on some early findings of an {ARC} Linkage project on {PIT} reform. In the first phase of this project, STINMOD, a microsimulation model, is used to construct and test a series of hypothetical {PIT} packages in order to establish which packages can best deliver the required policy outcomes. Under the principles of revenue-neutrality and incrementality, a preferred {PIT} package with a broader tax base and a flatter tax rate structure is derived. It is shown that this {PIT} proposal outperforms the current {PIT} with respect to all traditional criteria for good tax policy.