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Interest Rate and Exchange Rate Volatility Spillovers: Multiscale Perspective of Monetary Policy Transmission in Ghana

Author

Listed:
  • Nana Kwame Akosah

    (Wits Business School, University of the Witwatersrand, South Africa and Bank of Ghana, Ghana)

  • Paul Alagidede

    (Wits Business School, University of the Witwatersrand, South Africa)

  • Eric Schaling

    (Wits Business School, University of the Witwatersrand, South Africa)

Abstract

Ghana`s economy is characterised by acute exchange rate volatility alongside persistent and high consumer inflation. This places the economy among the sub-Saharan African countries with the highest inflation over the years. Therefore, we explore in-sample and out-of-sample macro-volatility spillovers to determine the effectiveness of monetary policy and also ascertain the relevance of the exchange rate in Ghana’s interest rate setting at both time and multiscale domains. The study reveals scale-dependent interconnectedness among the macro-variables as their causal linkages broadly intensify at the longer time-scale. We find the real policy rate and the exchange rate to be net transmitters of shocks, while inflation and output gaps are net receivers of shocks from the system. Output gap, however, is the largest net receiver of shocks from the system. The empirical findings generally buttress the prerequisite to uphold exchange rate stability in order to inure general macroeconomic stability in Ghana. In addition, the extent of spillover dynamics from policy interest rate to and from the targeted macro-variables (particularly output gap and inflation) appears to be moderate even in the long run, surmising less effective monetary policy transmission in Ghana.

Suggested Citation

  • Nana Kwame Akosah & Paul Alagidede & Eric Schaling, 2020. "Interest Rate and Exchange Rate Volatility Spillovers: Multiscale Perspective of Monetary Policy Transmission in Ghana," Journal of Central Banking Theory and Practice, Central bank of Montenegro, vol. 9(1), pages 135-167.
    • Handle: RePEc:cbk:journl:v:9:y:2020:i:1:p:135-167
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    Citations

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    Cited by:

    1. Nana Kwame Akosah & Imhotep Paul Alagidede & Eric Schaling, 2021. "Dynamics of Money Market Interest Rates in Ghana: Time‐Frequency Analysis of Volatility Spillovers," South African Journal of Economics, Economic Society of South Africa, vol. 89(4), pages 555-589, December.
    2. Karen Poghosyan & Ruben Poghosyan, 2022. "An Application of Index Number Theory to Interest Rates: Evidence from Selected Post-Soviet Countries," Journal of Central Banking Theory and Practice, Central bank of Montenegro, vol. 11(2), pages 165-186.

    More about this item

    Keywords

    Volatility Spillover; Nonlinear Causality; Variance Decomposition; Multi-scale.;
    All these keywords.

    JEL classification:

    • C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes; State Space Models
    • E42 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Monetary Sytsems; Standards; Regimes; Government and the Monetary System
    • E43 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Interest Rates: Determination, Term Structure, and Effects
    • E47 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Forecasting and Simulation: Models and Applications
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies
    • F31 - International Economics - - International Finance - - - Foreign Exchange
    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics

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