The elasticity of taxable income of individuals in couples

John Creedy and Norman Gemmell

International Tax and Public Finance, 2020, vol. 27, issue 4, No 6, 950 pages

Abstract: Abstract This paper examines the effect on the elasticity of taxable income for individuals in couples, where there is no income splitting for tax purposes but joint decisions are taken regarding taxable incomes. Two approaches are considered. First, the effects of minimising the total tax increase arising from a marginal rate increase are examined. Second, the paper considers the effects of joint utility maximisation. In both cases, analytical results suggest the possibility that empirical taxable income elasticity estimates obtained while ignoring the distinction between individuals and couples can be biased, sometimes substantially. Thus, in the presence of individual income taxation, both taxable income elasticity and revenue response estimates could be expected to be quite different when those estimates are obtained while erroneously treating the behaviour of members of couple households as if they were separate individuals.

Keywords: Income taxation; Taxable income; Elasticity of taxable income (search for similar items in EconPapers)
JEL-codes: H24 H26 H31 (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (3)

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DOI: 10.1007/s10797-019-09581-6

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