NON-LINEAR MONETARY POLICY MODELLING WITH GOVERNMENT DEBT AS A THRESHOLD: THE CASE OF THE CZECH REPUBLIC
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In this paper, we examine the extent to which monetary policy might be constrained by the evolution of government indebtedness. We employ a threshold vector auto regression (TVAR) model to capture the possible asymmetries in the relationship between monetary policy and the real economy, corresponding to a switch between low and high growth rates of the government debt-to-GDP ratio. The analysis is performed on Czech data over the 2001 – 2016 periods. The results show that the reaction of a central bank to macroeconomic shocks can be regime-dependent. We find that a rising government debt could constrain monetary policy, which manifests through an altered monetary policy transmission to the real economy. Overall, our study demonstrates the advantages of using a non-linear approach to study the fiscal and monetary policy interactions.
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