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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. Flood, Lennart & Hansen, Jörgen & Wahlberg, Roger, 1999. "Household Labor Supply and Welfare Participation in Sweden," Working Papers in Economics 18, University of Gothenburg, Department of Economics.
  2. 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..
  3. Feldstein, Martin, 1995. "The Effect of Marginal Tax Rates on Taxable Income: A Panel Study of the 1986 Tax Reform Act," Journal of Political Economy, University of Chicago Press, vol. 103(3), pages 551-72, June.
  4. King, Mervyn A., 1983. "Welfare analysis of tax reforms using household data," Journal of Public Economics, Elsevier, vol. 21(2), pages 183-214, July.
  5. repec:ese:iserwp:2000-19 is not listed on IDEAS
  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. Immervoll, Herwig & Kleven, Henrik & Kreiner, Claus Thustrup & Saez, Emmanuel, 2004. "Welfare Reform in European Countries: A Micro-Simulation Analysis," CEPR Discussion Papers 4324, C.E.P.R. Discussion Papers.
  8. Henrik Jacobsen Kleven & Claus Thustrup Kreiner & Emmanuel Saez, 2007. "The Optimal Income Taxation of Couples as a Multi-Dimensional Screening Problem," CESifo Working Paper Series 2092, CESifo Group Munich.
  9. Euwals, R.W. & van Soest, A.H.O., 1996. "Desired and Actual Labour Supply of Unmarried Men and Women in the Netherlands," Discussion Paper 1996-23, Tilburg University, Center for Economic Research.
  10. François Bourguignon & Amadéo Spadaro, 2005. "Tax-benefit revealed social preferences," PSE Working Papers halshs-00590779, HAL.
  11. François Bourguignon & Amedeo Spadaro, 2006. "Microsimulation as a Tool for Evaluating Redistribution Policies," Working Papers 20, ECINEQ, Society for the Study of Economic Inequality.
  12. 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.
  13. Yaari, Menahem E, 1987. "The Dual Theory of Choice under Risk," Econometrica, Econometric Society, vol. 55(1), pages 95-115, January.
  14. 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.
  15. William T. Dickens & Shelly J. Lundberg, 1985. "Hours Restrictions and Labor Supply," NBER Working Papers 1638, National Bureau of Economic Research, Inc.
  16. Diamond, P., 1980. "Income taxation with fixed hours of work," Journal of Public Economics, Elsevier, vol. 13(1), pages 101-110, February.
  17. José Labeaga & Xisco Oliver & Amedeo Spadaro, 2008. "Discrete choice models of labour supply, behavioural microsimulation and the Spanish tax reforms," Journal of Economic Inequality, Springer, vol. 6(3), pages 247-273, September.
  18. 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.
  19. 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.
  20. 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.
  21. François Bourguignon & Amedeo Spadaro, 2012. "Tax–benefit revealed social preferences," Journal of Economic Inequality, Springer, vol. 10(1), pages 75-108, March.
  22. 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.
  23. 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.
  24. Rolf Aaberge & Ugo Colombino & Steinar Strøm, 2004. "Do more equal slices shrink the cake? An empirical investigation of tax-transfer reform proposals in Italy," Journal of Population Economics, Springer, vol. 17(4), pages 767-785, December.
  25. DONALDSON, David & WEYMARK, John A., . "Ethically flexible Gini indices for income distributions in the continuum," CORE Discussion Papers RP -520, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  26. Yaari, Menahem E., 1988. "A controversial proposal concerning inequality measurement," Journal of Economic Theory, Elsevier, vol. 44(2), pages 381-397, April.
  27. Marc Fleurbaey & Fran�ois Maniquet, 2006. "Fair Income Tax," Review of Economic Studies, Oxford University Press, vol. 73(1), pages 55-83.
  28. 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.
  29. repec:pse:psecon:2005-22 is not listed on IDEAS
  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. Bossert, Walter, 1990. "An axiomatization of the single-series Ginis," Journal of Economic Theory, Elsevier, vol. 50(1), pages 82-92, February.
  32. 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).
  33. Fortin, Bernard & Truchon, Michel & Beausejour, Louis, 1993. "On reforming the welfare system : Workfare meets the negative income tax," Journal of Public Economics, Elsevier, vol. 51(2), pages 119-151, June.
  34. 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.
  35. Emmanuel Saez, 2002. "Optimal Income Transfer Programs: Intensive Versus Extensive Labor Supply Responses," The Quarterly Journal of Economics, MIT Press, vol. 117(3), pages 1039-1073, August.
  36. Weymark, John A., 1981. "Generalized gini inequality indices," Mathematical Social Sciences, Elsevier, vol. 1(4), pages 409-430, August.
  37. repec:cup:cbooks:9780521296762 is not listed on IDEAS
  38. Rolf Aaberge, 2006. "Gini’s Nuclear Family," Discussion Papers 491, Research Department of Statistics Norway.
  39. Saez, Emmanuel, 2001. "Using Elasticities to Derive Optimal Income Tax Rates," Review of Economic Studies, Wiley Blackwell, vol. 68(1), pages 205-29, January.
  40. Rolf Aaberge, 2000. "Characterizations of Lorenz curves and income distributions," Social Choice and Welfare, Springer, vol. 17(4), pages 639-653.
  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. Mehran, Farhad, 1976. "Linear Measures of Income Inequality," Econometrica, Econometric Society, vol. 44(4), pages 805-09, July.
  43. Guy Laroque, 2005. "Income Maintenance and Labor Force Participation," Econometrica, Econometric Society, vol. 73(2), pages 341-376, 03.
  44. 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.
  45. 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.
  46. 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.
  47. Tuomala, Matti, 1990. "Optimal Income Tax and Redistribution," OUP Catalogue, Oxford University Press, number 9780198286059.
  48. Richard Blundell, 1992. "Labour supply and taxation: a survey," Fiscal Studies, Institute for Fiscal Studies, vol. 13(3), pages 15-40, January.
  49. Roemer, J.E., 1992. "A Pragmatic Theory of Responsibility for the Egalitarian Planner," Papers 391, California Davis - Institute of Governmental Affairs.
  50. 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.
  51. 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.
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