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Taxpayer response to greater progressivity: Evidence from personal income tax reform in Uganda

Author

Listed:
  • Maria Jouste

    (UNU-WIDER, Helsinki, Finland)

  • Tina Kaidu Barugahara

    (Uganda Revenue Authority, Kampala, Uganda)

  • Joseph Okello Ayo

    (University of Helsinki, Finland)

  • Jukka Pirttilä

    (University of Helsinki, Finland; and VATT Institute for Economic Research, Helsinki, Finland)

  • Pia Rattenhuber

    (UNU-WIDER, Helsinki, Finland)

Abstract

We evaluate a major personal income tax reform in Uganda that came into effect in 2012–13, contributing to the scarce literature on the effects of personal income tax reform on employees’ income in a low-income country in Africa. The reform increased the tax-free lower threshold, increased tax rates for higher incomes, and introduced an additional highest tax band for top 1% of income earners. Using the universe of pay-as-you-earn (PAYE) administrative data from the Uganda Tax Authority, we analyse the impact of the reform on reported labour incomes. In the preferred specification, we find very limited support for behavioural reactions. However, heterogeneity analysis reveals that top-income workers in firms handled by ordinary (as opposed to medium or large taxpayer) offices report lower incomes after the reform. We also find suggestive evidence that part of the response may arise from income shifting. The reform managed to raise more revenue and it also led to a limited reduction in after-tax income inequality.

Suggested Citation

  • Maria Jouste & Tina Kaidu Barugahara & Joseph Okello Ayo & Jukka Pirttilä & Pia Rattenhuber, 2023. "Taxpayer response to greater progressivity: Evidence from personal income tax reform in Uganda," Working Papers 13, Finnish Centre of Excellence in Tax Systems Research.
    • Handle: RePEc:fit:wpaper:13
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    References listed on IDEAS

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    1. Thomas Piketty & Emmanuel Saez, 2012. "Optimal Labor Income Taxation," NBER Working Papers 18521, National Bureau of Economic Research, Inc.
    2. Bohne, Albrecht & Nimczik, Jan Sebastian, 2018. "Information Frictions and Learning Dynamics: Evidence from Tax Avoidance in Ecuador," IZA Discussion Papers 11536, IZA Network @ LISER.
    3. J. A. Mirrlees, 1971. "An Exploration in the Theory of Optimum Income Taxation," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 38(2), pages 175-208.
    4. Dina Pomeranz & José Vila-Belda, 2019. "Taking State-Capacity Research to the Field: Insights from Collaborations with Tax Authorities," Annual Review of Economics, Annual Reviews, vol. 11(1), pages 755-781, August.
    5. Aliisa Koivisto & Nicholas Musoke & Dorothy Nakyambadde & Caroline Schimanski, 2021. "The case of taxing multinational corporations in Uganda: Do multinational corporations face lower effective tax rates and is there evidence for profit shifting?," WIDER Working Paper Series wp-2021-51, World Institute for Development Economic Research (UNU-WIDER).
    6. Pierre Bachas & Anders Jensen & Lucie Gadenne, 2024. "Tax Equity in Low- and Middle-Income Countries," Journal of Economic Perspectives, American Economic Association, vol. 38(1), pages 55-80, Winter.
    7. Henrik J. Kleven & Mazhar Waseem, 2013. "Using Notches to Uncover Optimization Frictions and Structural Elasticities: Theory and Evidence from Pakistan," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 128(2), pages 669-723.
    8. Marcelo Bergolo & Gabriel Burdin & Mauricio De Rosa & Matias Giaccobasso & Martin Leites, 2021. "Digging Into the Channels of Bunching: Evidence from the Uruguayan Income Tax," The Economic Journal, Royal Economic Society, vol. 131(639), pages 2726-2762.
    9. Maria Jouste & Tina Kaidu Barugahara & Joseph Ayo Okello & Jukka Pirttilä & Pia Rattenhuber, 2025. "Taxpayer response to greater progressivity: evidence from personal income tax reform in Uganda," International Tax and Public Finance, Springer;International Institute of Public Finance, vol. 32(4), pages 1177-1212, August.
    10. Emmanuel Saez, 2001. "Using Elasticities to Derive Optimal Income Tax Rates," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 68(1), pages 205-229.
    11. Raj Chetty, 2009. "Sufficient Statistics for Welfare Analysis: A Bridge Between Structural and Reduced-Form Methods," Annual Review of Economics, Annual Reviews, vol. 1(1), pages 451-488, May.
    12. Johannes Hermanus Kemp, 2019. "The Elasticity of Taxable Income: The Case of South Africa," South African Journal of Economics, Economic Society of South Africa, vol. 87(4), pages 417-449, December.
    13. Jakobsen, Katrine Marie & Søgaard, Jakob Egholt, 2022. "Identifying behavioral responses to tax reforms: New insights and a new approach," Journal of Public Economics, Elsevier, vol. 212(C).
    14. Carina Neisser, 2021. "The Elasticity of Taxable Income: A Meta-Regression Analysis [The top 1% in international and historical perspective]," The Economic Journal, Royal Economic Society, vol. 131(640), pages 3365-3391.
    15. Kyle McNabb & Hazel Granger, 2023. "The taxation of employment income in African countries: Findings from a new dataset," Journal of International Development, John Wiley & Sons, Ltd., vol. 35(7), pages 1595-1618, October.
    16. 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.
    17. Miguel Almunia & Jonas Hjort & Justine Knebelmann & Lin Tian, 2024. "Strategic or Confused Firms? Evidence from “Missing” Transactions in Uganda," The Review of Economics and Statistics, MIT Press, vol. 106(1), pages 256-265, January.
    18. Emmanuel Saez & Joel Slemrod & Seth H. Giertz, 2012. "The Elasticity of Taxable Income with Respect to Marginal Tax Rates: A Critical Review," Journal of Economic Literature, American Economic Association, vol. 50(1), pages 3-50, March.
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    1. Maria Jouste & Tina Kaidu Barugahara & Joseph Ayo Okello & Jukka Pirttilä & Pia Rattenhuber, 2025. "Taxpayer response to greater progressivity: evidence from personal income tax reform in Uganda," International Tax and Public Finance, Springer;International Institute of Public Finance, vol. 32(4), pages 1177-1212, August.

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    JEL classification:

    • C31 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Cross-Sectional Models; Spatial Models; Treatment Effect Models; Quantile Regressions; Social Interaction Models
    • H24 - Public Economics - - Taxation, Subsidies, and Revenue - - - Personal Income and Other Nonbusiness Taxes and Subsidies
    • O23 - Economic Development, Innovation, Technological Change, and Growth - - Development Planning and Policy - - - Fiscal and Monetary Policy in Development

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