In recent years, the US, UK and Australia have lowered tax rates on high incomes and expanded tax credits and family transfer payments that are withdrawn on the joint income of a couple. These reforms result in significant changes in the structure of marginal and average income tax rates. In this paper we present a case study that examines the impact of reforms of this kind on the structure of tax rates on incomes in Australia. We find that the reforms have led to high effective marginal rates across a wide middle band of earnings and to a shift towards joint taxation. As is well known, joint taxation results in high tax rates on secondary earners, with in consequence undesirable effects on both work incentive and fairness of the income distribution. A lifecycle analysis of time use and saving decisions indicates strong negative effects on female labour supply and household saving.
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Paper provided by Centre for Economic Policy Research, Research School of Social Sciences, Australian National University in its series CEPR Discussion Papers with number
590.
Find related papers by JEL classification: D91 - Microeconomics - - Intertemporal Choice and Growth - - - Intertemporal Consumer Choice; Life Cycle Models and Saving H24 - Public Economics - - Taxation, Subsidies, and Revenue - - - Personal Income and Other Nonbusiness Taxes and Subsidies H31 - Public Economics - - Fiscal Policies and Behavior of Economic Agents - - - Household I38 - Health, Education, and Welfare - - Welfare and Poverty - - - Government Programs; Provision and Effects of Welfare Programs J16 - Labor and Demographic Economics - - Demographic Economics - - - Economics of Gender; Non-labor Discrimination J22 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Time Allocation and Labor Supply
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Patricia Apps & Ray Rees, 2007.
"The Taxation of Couples,"
CEPR Discussion Papers
559, Centre for Economic Policy Research, Research School of Social Sciences, Australian National University.
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