Income Inequality and GDP Growth Nexus in South Africa: Does the 4.5% Consumer Price Inflation Threshold and Other Channels Play a Role?

  • Eliphas Ndou
  • Thabo Mokoena


Evidence indicates that positive income inequality shocks significantly lower GDP growth. Maintaining inflation below the 4.5 % threshold minimizes the adverse effects of positive income inequality shocks on GDP growth. In addition, evidence from the counterfactual analysis indicates the adverse effects of income inequality shocks on GDP growth are exacerbated by elevated economic policy uncertainty, depressed employment, weakening investment, especially residential and nonresidential investment. These findings imply the need for certainty in economic policy to avert exacerbating the adverse effects of positive income inequality shocks on GDP growth. Second, policymakers should implement policy initiatives that should reduce income inequality for a long time rather than transitorily.


  1. Atems, B., & Jones, J. (2015). Income inequality and GDP growth: A panel VAR approach. Empirical Economics, 48(4), 1541–1561.CrossRefGoogle Scholar
  2. Banerjee, A. V., & Duo, E. (2003). Inequality and growth: What can the data say? Journal of GDP Growth, 8(3), 267–299.CrossRefGoogle Scholar
  3. Barro, R. J. (2000). Inequality and growth in a panel of countries. Journal of GDP Growth, 5(1), 5–32.CrossRefGoogle Scholar
  4. Grigoli, F., Paredes, E., & Di Bella, G. (2016). Inequality and growth: A heterogenous approach (IMF Working Paper, WP/16/244).Google Scholar
  5. Gumata, N., & Ndou, E. (2017). Labour market and fiscal policy adjustments to shocks: The role and implications for price and financial stability in South Africa. Cham, Switzerland: Palgrave Macmillan.Google Scholar
  6. Hlatshwayo, S., & Saxegaard, M. (2016). The consequences of policy uncertainty: Disconnects and dilutions in the South African real effective exchange rate-export relationship (IMF Working Paper, 1, WP/16/113).Google Scholar
  7. Kaldor, N. (1957). A model of GDP growth. The Economic Journal, 67(268), 591–624.CrossRefGoogle Scholar
  8. Lazear, E., & Rosen, S. (1981). Rank-order tournaments as optimum labor contracts. Journal of Political Economy, 89(5), 841–864.CrossRefGoogle Scholar
  9. Okun, A. M. (2015). Equality and efficiency: The big tradeoff. Washington, DC: Brookings Institution Press.Google Scholar
  10. Ostry, J. D., & Berg, A. (2011). Inequality and unsustainable growth: Two sides of the same coin? (International monetary fund SDN/11/08).Google Scholar
  11. Ostry, J. D., Berg, A., & Tsangarides, C. J. (2014). Redistribution, inequality, and growth. (International monetary fund SDN/14/02).Google Scholar
  12. Stiglitz, J. E. (2012). The price of inequality: How today’s divided society endangers our future. New York and London: W. W. Norton.Google Scholar
  13. World Bank. (2018, March). Overcoming poverty and inequality in South Africa: An assessment of drivers, constraints and opportunities.Google Scholar

Copyright information

© The Author(s) 2019

Authors and Affiliations

  • Eliphas Ndou
    • 1
    • 3
    • 4
  • Thabo Mokoena
    • 2
  1. 1.Economic Research DepartmentSouth African Reserve BankPretoriaSouth Africa
  2. 2.Department of Economic, Small Business Development, Tourism and Environmental AffairsFree State Provincial GovernmentBloemfonteinSouth Africa
  3. 3.School of Economic and Business SciencesUniversity of the WitwatersrandJohannesburgSouth Africa
  4. 4.Wits Plus, Centre for Part-Time StudiesUniversity of the WitwatersrandJohannesburgSouth Africa

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