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A computable general equilibrium model of the monetary policy implications for financial stability in South Africa

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  • Conrad Beyers
  • Kojo A. Essel‐Mensah
  • Dimitrios P. Tsomocos

Abstract

The South African Reserve Bank (SARB) uses interest rates to control inflation. The Computable General Equilibrium (CGE) model can contribute to inflation targeting objective and also determine the effects on banks and the economy. We improved the accuracy of the results from previous work on the banking sector CGE model by estimating the elasticities of the reduced form equations of the model instead of arbitrarily choosing them. Our results conform with the established view that lower policy rates lead to an increase in inflation and a reduction in banks' profits. However, because of the adverse supply shocks arising from the effects of the COVID‐19 pandemic, the increase in the GDP is crowded out. The CGE model is a useful tool for the SARB for monetary policy implications on financial stability, informing and providing analysis on its repo rate decision, and determining the consequent effects on the economy.

Suggested Citation

  • Conrad Beyers & Kojo A. Essel‐Mensah & Dimitrios P. Tsomocos, 2024. "A computable general equilibrium model of the monetary policy implications for financial stability in South Africa," South African Journal of Economics, Economic Society of South Africa, vol. 92(4), pages 415-443, December.
  • Handle: RePEc:bla:sajeco:v:92:y:2024:i:4:p:415-443
    DOI: 10.1111/saje.12383
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    References listed on IDEAS

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    1. Manoel Bittencourt & Monaheng Seleteng & Reneé van Eyden, 2014. "Inflation and Economic Growth: Evidence from the Southern African Development Countries," Working Papers 405, Economic Research Southern Africa.
    2. Benjamin Tabak & Daniel Cajueiro & Dimas Fazio, 2013. "Financial fragility in a general equilibrium model: the Brazilian case," Annals of Finance, Springer, vol. 9(3), pages 519-541, August.
    3. Tsomocos, Dimitrios P., 2003. "Equilibrium analysis, banking, contagion and financial fragility," LSE Research Online Documents on Economics 24826, London School of Economics and Political Science, LSE Library.
    4. Aydemir, Resul & Ovenc, Gokhan, 2016. "Interest rates, the yield curve and bank profitability in an emerging market economy," Economic Systems, Elsevier, vol. 40(4), pages 670-682.
    5. Eva Catarineu-Rabell & Patricia Jackson & Dimitrios Tsomocos, 2005. "Procyclicality and the new Basel Accord - banks’ choice of loan rating system," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 26(3), pages 537-557, October.
    6. Charles Goodhart & Pojanart Sunirand & Dimitrios Tsomocos, 2006. "A model to analyse financial fragility," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 27(1), pages 107-142, January.
    7. Charles A.E. Goodhart & Pojanart Sunirand & Dimitrios P. Tsomocos, 2005. "A risk assessment model for banks," Annals of Finance, Springer, vol. 1(2), pages 197-224, September.
    8. Piergiorgio Alessandri & Benjamin D. Nelson, 2015. "Simple Banking: Profitability and the Yield Curve," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 47(1), pages 143-175, February.
    9. Daleen Smal & Coen Pretorius & Nelene Ehlers, 2007. "The core forecasting model of the South African Reserve Bank," Working Papers 3195, South African Reserve Bank.
    10. Xiao-guang Zhang & George Verikios, 2006. "Armington Parameter Estimation for a Computable General Equilibrium Model: A Database Consistent Approach," Economics Discussion / Working Papers 06-10, The University of Western Australia, Department of Economics.
    11. Conrad F. J. Beyers & Allan Freitas & Kojo A. Essel-Mensah & Reyno Seymore & Dimitrios P. Tsomocos, 2020. "A computable general equilibrium model for banking sector risk assessment in South Africa," Annals of Finance, Springer, vol. 16(2), pages 195-218, June.
    12. Agustín Saade & Daniel Osorio & Dairo Estrada, 2007. "An equilibrium approach to financial stability analysis: the Colombian case," Annals of Finance, Springer, vol. 3(1), pages 75-105, January.
    13. Santiago Fernández de Lis & Jorge Martínez Pagés & Jesús Saurina, 2001. "Credit growth, problem loans and credit risk provisioning in Spain," BIS Papers chapters, in: Bank for International Settlements (ed.), Marrying the macro- and micro-prudential dimensions of financial stability, volume 1, pages 331-353, Bank for International Settlements.
    14. Charles Goodhart & Pojanart Sunirand & Dimitrios Tsomocos, 2006. "A Time Series Analysis of Financial Fragility in the UK Banking System," Annals of Finance, Springer, vol. 2(1), pages 1-21, January.
    15. Claudio Borio & Leonardo Gambacorta & Boris Hofmann, 2017. "The influence of monetary policy on bank profitability," International Finance, Wiley Blackwell, vol. 20(1), pages 48-63, March.
    16. Anil K Kashyap & Richard Berner & Charles A E Goodhart, 2011. "The Macroprudential Toolkit," IMF Economic Review, Palgrave Macmillan;International Monetary Fund, vol. 59(2), pages 145-161, June.
    17. Dimitrios P. Tsomocos, 2012. "Equilibrium Analysis, Banking and Financial Instability," Chapters, in: The Challenge of Financial Stability, chapter 4, pages 61-97, Edward Elgar Publishing.
    18. Goodhart, Charles A. E. & Sunirand, Pojanart & Tsomocos, Dimitrios P., 2004. "A model to analyse financial fragility: applications," Journal of Financial Stability, Elsevier, vol. 1(1), pages 1-30, September.
    19. Burfisher,Mary E., 2011. "Introduction to Computable General Equilibrium Models," Cambridge Books, Cambridge University Press, number 9780521139779, December.
    20. Charles A.E. Goodhart & Anil K. Kashyap & Dimitrios P. Tsomocos & Alexandros P. Vardoulakis, 2019. "Financial Regulation In General Equilibrium," Chapters, in: Financial Regulation and Stability, chapter 3, pages 27-77, Edward Elgar Publishing.
    21. Charles A. E. Goodhart & Dimitrios P. Tsomocos, 2011. "The Mayekawa Lecture: The Role of Default in Macroeconomics," Monetary and Economic Studies, Institute for Monetary and Economic Studies, Bank of Japan, vol. 29, pages 49-72, November.
    22. Burfisher,Mary E., 2011. "Introduction to Computable General Equilibrium Models," Cambridge Books, Cambridge University Press, number 9780521766968, December.
    23. Shaun de Jager & Chris Loewald & Konstantin Makrelov & Xolani Sibande, 2022. "Leaningagainstthewindwithfiscalandmonetarypolicy," Working Papers 11033, South African Reserve Bank.
    24. Witness Simbanegavi & Joshua B. Greenberg & Tendai Gwatidzo, 2015. "Editor's choice Testing for Competition in the South African Banking Sector," Journal of African Economies, Centre for the Study of African Economies, vol. 24(3), pages 303-324.
    25. Johansen, Soren, 1995. "Likelihood-Based Inference in Cointegrated Vector Autoregressive Models," OUP Catalogue, Oxford University Press, number 9780198774501.
    26. Goodhart, Charles & Kashyap, Anil & Tsomocos, Dimitri & Vardoulakis, Alexandros, 2012. "Financial regulation in general equilibrium," LSE Research Online Documents on Economics 119051, London School of Economics and Political Science, LSE Library.
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