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Implicit public debt thresholds: An operational proposal
DOI:10.1016/j.jpolmod.2020.05.005.png)
Abstract
En 中文
Gauging the public debt-to-GDP ratio a country can sustain in the medium-run without putting fiscal sustainability at risk is a question of key relevance for policy-makers. Deviations from a safe level of debt should be watched over in order to take corrective measures. In this paper we make a proposal for an operational characterization of the prudent debt level. To do so, we use standard methods based on Vector Autoregressions to compute the probability that the public debt ratio exceeds a given threshold, using the Spanish case as an example. The resulting probabilities are highly and positively correlated with market risk assessment, measured by the spread with respect to the German bond. Our estimation of the prudent debt level is obtained as the debt-to-GDP ratio that maximizes the correlation between the probability of passing a pre-specified debt threshold and the spread. The so-obtained implicit debt threshold or prudent debt level, which is consistent with the medium-term debt-to-GDP ratio anchor of 60% of GDP, presents several advantages as a complement to existing DSA toolkits. (C) 2020 The Society for Policy Modeling. Published by Elsevier Inc. All rights reserved.
Keywords:
Public debt
Early warning indicators
Fiscal sustainability
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