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The effect of fiscal drag on income distribution and work incentives: A microsimulation analysis on selected African countries

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  • Adnan Abdulaziz Shahir
  • Francesco Figari

Abstract

Although the effect of fiscal drag is well‐studied in the industrialised world, empirical evidence from developing economies remains limited. Against this backdrop, this study aims to explore the effect of fiscal drag on income distribution and work incentives. To this end, the study employs SOUTHMOD, the tax‐benefit microsimulation model, for six African countries: Ethiopia, South Africa, Tanzania, Uganda, Mozambique, and Zambia. Three important conclusions are drawn from our empirical investigation. First, in the absence of proper tax parameter adjustment, the distribution of fiscal drag is determined by the liability progression of personal income tax in the pre‐inflation period. Second, the impact of fiscal drag on the redistributive effects and progressivity of personal income taxes is differentiated among countries. On the one hand, it reduces the progressivity of personal income tax in Ethiopia, South Africa, Tanzania, Uganda, and Zambia; on the other hand, it improves progressivity in Mozambique. However, it decreases the redistributive effect of personal income tax only in Ethiopia, Tanzania, and Uganda. Third, fiscal drag reduces financial work incentives to increase earnings in all countries. Addressing fiscal drag becomes very crucial considering the soaring inflation due to the war between Ukraine and Russia.

Suggested Citation

  • Adnan Abdulaziz Shahir & Francesco Figari, 2024. "The effect of fiscal drag on income distribution and work incentives: A microsimulation analysis on selected African countries," South African Journal of Economics, Economic Society of South Africa, vol. 92(2), pages 214-234, June.
    • Handle: RePEc:bla:sajeco:v:92:y:2024:i:2:p:214-234
    DOI: 10.1111/saje.12375
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    References listed on IDEAS

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    1. Aaron, Henry J, 1976. "Inflation and the Income Tax," American Economic Review, American Economic Association, vol. 66(2), pages 193-199, May.
    2. Atkinson, Anthony B., 2015. "Inequality: what can be done?," LSE Research Online Documents on Economics 101810, London School of Economics and Political Science, LSE Library.
    3. André Decoster & Jukka Pirttilä & Holly Sutherland & Gemma Wright, 2019. "SOUTHMOD: Modelling Tax-benefit Systems in Developing Countries," International Journal of Microsimulation, International Microsimulation Association, vol. 12(1), pages 1-12.
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    1. Esteban García-Miralles & Maximilian Freier & Sara Riscado & Chrysa Leventi & Alberto Mazzon & Glenn Abela & Laura Lehtonen & Laura Boyd & Baiba BrusbÄ rde & Marion Cochard & David Cornille & Emanuel, 2025. "Fiscal Drag in Theory and in Practice: a European Perspective," Working Papers 844, DNB.

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