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Designing Optimal Taxes with a Microeconometric Model of Household Labour Supply

  • Rolf Aaberge

    ()

  • Ugo Colombino

    ()

The purpose of this paper is to present an exercise where we identify optimal income tax rules according to various social welfare criteria, keeping fixed the total net tax revenue. Empirical applications of optimal taxation theory have typically adopted analytical expressions for the optimal taxes and then imputed numerical values to their parameters by using “calibration” procedures or previous econometric estimates. Besides the restrictiveness of the assumptions needed to obtain analytical solutions to the optimal taxation problem, a shortcoming of that procedure is the possible inconsistency between the theoretical assumptions and the assumptions implicit in the empirical evidence. In this paper we follow a different procedure, based on a computational approach to the optimal taxation problem. To this end, we estimate a microeconomic model with 78 parameters that capture heterogeneity in consumption-leisure preferences for singles and couples as well as in job opportunities across individuals based on detailed Norwegian household data for 1994. For any given tax rule, the estimated model can be used to simulate the labour supply choices made by single individuals and couples. Those choices are therefore generated by preferences and opportunities that vary across the decision units. We then identify optimal tax rules – within a class of 9-parameter piece-wise linear rules - by iteratively running the model until a given social welfare function attains its maximum under the constraint of keeping constant the total net tax revenue. The parameters to be determined are an exemption level, four marginal tax rates, three “kink points” and a lump sum transfer that can be positive (benefit) or negative (tax). We explore a variety of social welfare functions with differing degree of inequality aversion. All the social welfare functions imply monotonically increasing marginal tax rates. When compared with the current (1994) tax systems, the optimal rules imply a lower average tax rate. Moreover, all the optimal rules imply – with respect to the current rule – lower marginal rates on low and/or average income levels and higher marginal rates on relatively high income levels. These results are partially at odds with the tax reforms that took place in many countries during the last decades. While those reforms embodied the idea of lowering average tax rates, the way to implement it has typically consisted in reducing the top marginal rates. Our results instead suggest to lower average tax rates by reducing marginal rates on low and average income levels and increasing marginal rates on very high income levels.

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File URL: http://servizi.sme.unito.it/icer_repec/RePEc/icr/wp2008/ICERwp19-08.pdf
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Paper provided by ICER - International Centre for Economic Research in its series ICER Working Papers with number 19-2008.

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Length: 46 pages
Date of creation: Jun 2008
Date of revision:
Handle: RePEc:icr:wpicer:19-2008
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  1. Roed,K. & Strom,S., 1999. "Progressive taxes and the labour market : is the trade-off between equality and efficiency inevitable?," Memorandum 19/1999, Oslo University, Department of Economics.
  2. Euwals, Rob & van Soest, Arthur, 1999. "Desired and actual labour supply of unmarried men and women in the Netherlands," Labour Economics, Elsevier, vol. 6(1), pages 95-118, March.
  3. Rolf Aaberge, 2007. "Gini’s nuclear family," Journal of Economic Inequality, Springer, vol. 5(3), pages 305-322, December.
  4. François Bourguignon & Amadéo Spadaro, 2008. "Tax-benefit revealed social preferences," PSE Working Papers halshs-00586292, HAL.
  5. Feldstein, Martin, 1995. "Effect of Marginal Tax Rates on Taxable Income: A Panel Study of the 1986 Tax Reform Act," Scholarly Articles 2766676, Harvard University Department of Economics.
  6. Aaberge, Rolf & Dagsvik, John K & Strom, Steinar, 1995. " Labor Supply Responses and Welfare Effects of Tax Reforms," Scandinavian Journal of Economics, Wiley Blackwell, vol. 97(4), pages 635-59, December.
  7. Emmanuel Saez & Claus Thustrup Kreiner & Henrik Jacobsen Kleven, 2008. "The Optimal Income Taxation of Couples as a Multi-Dimensional Screening Problem," 2008 Meeting Papers 472, Society for Economic Dynamics.
  8. Peter Haan & Katharina Wrohlich, 2007. "Optimal Taxation: The Design of Child Related Cash- and In-Kind-Benefits," Discussion Papers of DIW Berlin 737, DIW Berlin, German Institute for Economic Research.
  9. Martin Feldstein, 1993. "The Effect of Marginal Tax Rates on Taxable Income: A Panel Study of the1986 Tax Reform Act," NBER Working Papers 4496, National Bureau of Economic Research, Inc.
  10. Roemer, John E. & Aaberge, Rolf & Colombino, Ugo & Fritzell, Johan & Jenkins, Stephen P. & Lefranc, Arnaud & Marx, Ive & Page, Marianne & Pommer, Evert & Ruiz-Castillo, Javier, 2003. "To what extent do fiscal regimes equalize opportunities for income acquisition among citizens?," Journal of Public Economics, Elsevier, vol. 87(3-4), pages 539-565, March.
  11. Aaberge, R. & Colombino, U. & Strom, S. & Wennemo, T., 1998. "Evaluating alternative tax reforms in Italy with a model of joint labor supply of married couples," Structural Change and Economic Dynamics, Elsevier, vol. 9(4), pages 415-433, December.
  12. BOADWAY, R. & MARCHAND, M. & PESTIEAU, P. & del MAR RACIONERO, M., 2001. "Optimal redistribution with heterogeneous preferences for leisure," CORE Discussion Papers 2001025, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  13. Saez, Emmanuel, 2001. "Using Elasticities to Derive Optimal Income Tax Rates," Review of Economic Studies, Wiley Blackwell, vol. 68(1), pages 205-29, January.
  14. Richard Blundell, 1992. "Labour supply and taxation: a survey," Fiscal Studies, Institute for Fiscal Studies, vol. 13(3), pages 15-40, January.
  15. Gruber, Jon & Saez, Emmanuel, 2002. "The elasticity of taxable income: evidence and implications," Journal of Public Economics, Elsevier, vol. 84(1), pages 1-32, April.
  16. Emmanuel Saez, 2000. "Optimal Income Transfer Programs: Intensive Versus Extensive Labor Supply Responses," NBER Working Papers 7708, National Bureau of Economic Research, Inc.
  17. Ugo Colombino & Steinar Strøm & Rolf Aaberge, 2000. "Labor supply responses and welfare effects from replacing current tax rules by a flat tax: Empirical evidence from Italy, Norway and Sweden," Journal of Population Economics, Springer, vol. 13(4), pages 595-621.
  18. Donaldson, David & Weymark, John A., 1983. "Ethically flexible gini indices for income distributions in the continuum," Journal of Economic Theory, Elsevier, vol. 29(2), pages 353-358, April.
  19. Rolf Aaberge & Ugo Colombino & Steinar Strøm & Tom Wennemo, 2005. "Joint Labour Supply of Married Couples: Efficiency and Distribution Effects of Tax and Labour Market Reforms," Labor and Demography 0501004, EconWPA.
  20. Guy Laroque, 2005. "Income Maintenance and Labor Force Participation," Econometrica, Econometric Society, vol. 73(2), pages 341-376, 03.
  21. Hey, John D & Lambert, Peter J, 1980. "Relative Deprivation and the Gini Coefficient: Comment," The Quarterly Journal of Economics, MIT Press, vol. 95(3), pages 567-73, November.
  22. Elchanan Ben Porath & Itzhak Gilboa, 1991. "Linear Measures, the Gini Index and the Income-Equality Tradeoff," Discussion Papers 944, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  23. Marc Fleurbaey & Francois Maniquet, 2002. "Fair Income Tax," Economics Working Papers 0021, Institute for Advanced Study, School of Social Science.
  24. Bossert, Walter, 1990. "An axiomatization of the single-series Ginis," Journal of Economic Theory, Elsevier, vol. 50(1), pages 82-92, February.
  25. Aaberge, Rolf & Colombino, Ugo & Strøm, Steinar, 2003. "Do More Equal Slices Shrink the Cake? An Empirical Investigation of Tax-Transfer Reform Proposals in Italy," Memorandum 37/2003, Oslo University, Department of Economics.
  26. Dagsvik, John K, 1994. "Discrete and Continuous Choice, Max-Stable Processes, and Independence from Irrelevant Attributes," Econometrica, Econometric Society, vol. 62(5), pages 1179-1205, September.
  27. Immervoll, Herwig & Kleven, Henrik Jacobsen & Kreiner, Claus Thustrup & Saez, Emmanuel, 2005. "Welfare Reform in European Countries: A Microsimulation Analysis," IZA Discussion Papers 1810, Institute for the Study of Labor (IZA).
  28. Diamond, P., 1980. "Income taxation with fixed hours of work," Journal of Public Economics, Elsevier, vol. 13(1), pages 101-110, February.
  29. Weymark, John A., 1981. "Generalized gini inequality indices," Mathematical Social Sciences, Elsevier, vol. 1(4), pages 409-430, August.
  30. Ebert, Udo, 1987. "Size and distribution of incomes as determinants of social welfare," Journal of Economic Theory, Elsevier, vol. 41(1), pages 23-33, February.
  31. Mehran, Farhad, 1976. "Linear Measures of Income Inequality," Econometrica, Econometric Society, vol. 44(4), pages 805-09, July.
  32. Fortin, B. & Truchon, M., 1990. "On Reforming the Welfare System: Workfare Meets the Negative Income Tax," Cahiers de recherche 9016, Université Laval - Département d'économique.
  33. Lennart Flood & Jörgen Hansen & Roger Wahlberg, 2004. "Household Labor Supply and Welfare Participation in Sweden," Journal of Human Resources, University of Wisconsin Press, vol. 39(4).
  34. José M. Labeaga & Xisco Oliver & Amadéo Spadaro, 2005. "Discrete choice models of labour suppluy, behavioural microsimulation and the Spanish tax reform," PSE Working Papers halshs-00590836, HAL.
  35. Aaberge, Rolf & Colombino, Ugo & Strom, Steinar, 1999. "Labour Supply in Italy: An Empirical Analysis of Joint Household Decisions, with Taxes and Quantity Constraints," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 14(4), pages 403-22, July-Aug..
  36. repec:pse:psecon:2005-22 is not listed on IDEAS
  37. Donaldson, David & Weymark, John A., 1980. "A single-parameter generalization of the Gini indices of inequality," Journal of Economic Theory, Elsevier, vol. 22(1), pages 67-86, February.
  38. François Bourguignon & Amadéo Spadaro, 2005. "Microsimulation as a tool for evaluating redistribution policies," PSE Working Papers halshs-00590863, HAL.
  39. Yaari, Menahem E, 1987. "The Dual Theory of Choice under Risk," Econometrica, Econometric Society, vol. 55(1), pages 95-115, January.
  40. Dickens, William T & Lundberg, Shelly J, 1993. "Hours Restrictions and Labor Supply," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 34(1), pages 169-92, February.
  41. Aaberge, Rolf, 2001. "Axiomatic Characterization of the Gini Coefficient and Lorenz Curve Orderings," Journal of Economic Theory, Elsevier, vol. 101(1), pages 115-132, November.
  42. Rolf Aaberge, 2000. "Characterizations of Lorenz curves and income distributions," Social Choice and Welfare, Springer, vol. 17(4), pages 639-653.
  43. Richard Blundell & Mike Brewer & Peter Haan & Andrew Shephard, 2009. "Optimal Income Taxation of Lone Mothers: An Empirical Comparison of the UK and Germany," Economic Journal, Royal Economic Society, vol. 119(535), pages F101-F121, 02.
  44. repec:fda:fdaddt:2005-14 is not listed on IDEAS
  45. Tuomala, Matti, 1990. "Optimal Income Tax and Redistribution," OUP Catalogue, Oxford University Press, number 9780198286059, March.
  46. Yaari, Menahem E., 1988. "A controversial proposal concerning inequality measurement," Journal of Economic Theory, Elsevier, vol. 44(2), pages 381-397, April.
  47. King, Mervyn A., 1983. "Welfare analysis of tax reforms using household data," Journal of Public Economics, Elsevier, vol. 21(2), pages 183-214, July.
  48. Sen, Amartya, 1974. "Informational bases of alternative welfare approaches : Aggregation and income distribution," Journal of Public Economics, Elsevier, vol. 3(4), pages 387-403, November.
  49. Roemer, J.E., 1992. "A Pragmatic Theory of Responsibility for the Egalitarian Planner," Papers 391, California Davis - Institute of Governmental Affairs.
  50. repec:cup:cbooks:9780521296762 is not listed on IDEAS
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