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Does the Inflation Rate Below 4.5% Matter for the Distributional Effects of Positive Inflation Shocks on Income Inequality in South Africa?

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Inequality, Output-Inflation Trade-Off and Economic Policy Uncertainty
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Abstract

Evidence reveals that income inequality growth declines to positive inflation shocks only when inflation is (1) below 3 % and (2) when it is below 4.5 % threshold level. In addition, employment growth rises significantly and reaches the bigger peak values when inflation is (1) below 3 % and (2) below 4.5 %. Despite, employment growth rising significantly when inflation is within the 3-6 % band or below 6 % threshold, the income inequality growth rises. In addition, evidence reveals that there is a threshold level within the existing inflation target band in which unexpected positive inflation impulses lead to rising GDP growth while reducing income inequality growth. This chapter concludes by examining the relevance of the inflation regime below the 4.5 % threshold in transmitting expansionary fiscal and monetary policy shocks to income inequality growth. The fiscal policy shocks include increased government consumption and income tax cut. The amplification effects by the inflation regime below 4.5 % threshold is bigger to personal income tax cut shocks, followed by government consumption shock. This implies expansionary fiscal policy tools can be used to lower income inequality and the reduction is amplified by inflation when it is below 4.5 % threshold.

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Notes

  1. 1.

    The problem with such threshold is that empirical research advocates for an endogenously determined threshold within a specific economic model.

  2. 2.

    However, other justifications have been pointed out in the literature. Theory suggests that inflation has direct effects on income inequality through various channels, which includes changes in real valuation of financial and nonfinancial assets (Bulir 2001). Whereas Romer and Romer (1999) put forward that high inflation can create expectations of future macroeconomic instability and lead to distortionary economic policies which impact on inequality.

  3. 3.

    This suggests reducing inflation in high inflation regime may decrease inequality. However, reducing inflation in low inflation regime might come at cost of higher inequality. Albanesi (2007) shows that higher inflation raises income inequality.

  4. 4.

    In addition, Ndou and Gumata (2017) showed that inflation tend to lead to high economic growth when inflation is below 4.5% and government spending amplifies GDP and credit growth. In addition, the trade-off between inflation and output volatility is bigger below the 4.5% inflation rate.

  5. 5.

    The use of income inequality in levels is due to test of integration indicating inflation is I(0) and I(1).

References

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Ndou, E., Mokoena, T. (2019). Does the Inflation Rate Below 4.5% Matter for the Distributional Effects of Positive Inflation Shocks on Income Inequality in South Africa?. In: Inequality, Output-Inflation Trade-Off and Economic Policy Uncertainty . Palgrave Macmillan, Cham. https://doi.org/10.1007/978-3-030-19803-9_3

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  • DOI: https://doi.org/10.1007/978-3-030-19803-9_3

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  • Publisher Name: Palgrave Macmillan, Cham

  • Print ISBN: 978-3-030-19802-2

  • Online ISBN: 978-3-030-19803-9

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