Towards a Negative Income Tax System for Australia
The most radical version of negative income tax is a ‘basic income/flat tax’ system which combines universal tax credits (that vary according to presence of children, disability etc.) and a flat tax rate on private income. Using NATSEM’s microsimulation model STINMOD it is found that to ensure that no current social security beneficiaries become worse off under such a system would either be very expensive to introduce or require a tax rate that is likely to be unacceptably high. Less radical versions of negative income tax are also costed, incorporating the possibility of varying tax rates, the tapering out of tax credits, and placing some restrictions on the granting of tax credits. This makes negative income tax look more feasible.
The analysis does not incorporate behavioural responses. Since the motivation for a negative income tax system is largely to achieve such responses (for example, labour supply responses), this feasibility analysis might have been unduly harsh. Research is required to incorporate behavioural responses into the analysis.
Document Type: Original Article
Affiliations: 1: Melbourne Institute of Applied Economic and Social Research, The University of Melbourne, 2: National Centre for Social and Economic Modelling, University of Canberra
Publication date: September 1, 1998