Macroprudential and monetary policies in South Africa: complements or substitutes?

Malibongwe Cyprian Nyati and Simiso Msomi
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Malibongwe Cyprian Nyati: Tshwane University of Technology
Simiso Msomi: School of Accounting, Economics and Finance,University of KwaZulu Natal, South Africa

International Journal of Research in Business and Social Science (2147-4478), 2025, vol. 14, issue 4, 211-228

Abstract: The article reports on the complementarity and substitutability of Macroprudential and Monetary policies in South Africa, based on the interactions of both Business and Financial cycles. To this end, a Dynamic Conditional Correlations and the Asymmetric Dynamic Conditional Correlations MGARCH models together with the Granger Causality model, the Artificial Neural Network VAR model, and the Structural VAR model, were adopted for the analyses of synchronization, causality, and the analysis of shocks to cycles, respectively. Empirical evidence obtained is such that, under conditions of financial and real economic stress in South Africa, there exists high synchronicity and bidirectional causality between CBCI and CFCI. Hence, Macroprudential and Monetary policies become complements, there exists interdependence between the two policies and actions of one policy contributes to the improvement of the other. However, under normal times there exist no synchronicity and a unidirectional causality relationship running from CBCI to CFCI, was observed. Under such conditions, Macroprudential and Monetary policies become substitutes, therefore, the two policies become independent of each other, hence, only one policy can achieve the desired outcome. Overall, a shock to one cycle is a major determinant of the fluctuations of the other cycle. Key Words:Financial Cycles, Business Cycles, Macroprudential Policy, Monetary Policy, Coalition, Governance, policymakers, accountability, inclusivity., Artificial Neural Network VAR

Date: 2025
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