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Income Tax Revenue Elasticities with Endogenous Labour Supply

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Abstract

It is important for the design of tax policy to be able to measure reliably the income elasticity of tax revenue. This gives the extent to which tax revenues change as a result of a change in earnings. Analytical expressions for income tax revenue elasticities treat earnings as exogenous, so that they do not accommodate the endogenous response of labour supply to the income tax system. This paper shows how these expression can be adapted to allow for endogenous labour supply. It identifies how far, and in what circumstances, labour supply effects are quantitatively important for revenue responsiveness estimates, both for individual taxpayers and in aggregate. It is shown that even a relatively simple tax-benefit structure can produce labour supply responses which considerably alter tax revenue elasticity calculations. It is shown that , even with modest leisure preferences, tax-wage elasticities are significantly higher that tax-income elasticities.

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  • John Creedy & Norman Gemmell, 2002. "Income Tax Revenue Elasticities with Endogenous Labour Supply," Treasury Working Paper Series 02/22, New Zealand Treasury.
    • Handle: RePEc:nzt:nztwps:02/22
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    File URL: https://treasury.govt.nz/sites/default/files/2007-10/twp02-22.pdf
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    1. Blundell, Richard & Macurdy, Thomas, 1999. "Labor supply: A review of alternative approaches," Handbook of Labor Economics, in: O. Ashenfelter & D. Card (ed.), Handbook of Labor Economics, edition 1, volume 3, chapter 27, pages 1559-1695, Elsevier.
    2. Richard Disney & Sarah Smith, 2002. "The Labour Supply Effect of the Abolition of the Earnings Rule for Older Workers in the United Kingdom," Economic Journal, Royal Economic Society, vol. 112(478), pages 136-152, March.
    3. John Creedy & Norman Gemmell, 2002. "The Built‐in Flexibility of Income and Consumption Taxes," Journal of Economic Surveys, Wiley Blackwell, vol. 16(4), pages 509-532, September.
    4. John Creedy, 2001. "Taxation and Economic Behaviour," Books, Edward Elgar Publishing, number 2464.
    5. Bingley, Paul & Lanot, Gauthier, 2002. "The incidence of income tax on wages and labour supply," Journal of Public Economics, Elsevier, vol. 83(2), pages 173-194, February.
    6. Creedy, John & Gemmell, Norman, 2002. "The Built-In Flexibility of Income and Consumption Taxes," Journal of Economic Surveys, Wiley Blackwell, vol. 16(4), pages 509-532, September.
    7. John Creedy & Alan Duncan, 2002. "Behavioural Microsimulation with Labour Supply Responses," Journal of Economic Surveys, Wiley Blackwell, vol. 16(1), pages 1-39, February.
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    More about this item

    Keywords

    Income Taxation; Revenue; Elasticity; Labour Supply;
    All these keywords.

    JEL classification:

    • 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
    • J22 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Time Allocation and Labor Supply

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