Modelling external debt – growth nexus: how relevant is governance?

Purpose Amongst the major concerns of sub-Sahara Africa are the rising external debt and poor performances in governance. This paper aims to lend a voice to the relevance of governance on the relationship between external debt and economic growth in selected five sub-Saharan African (SSA) countries. Design/methodology/approach Using available data from the World Governance and Development Indicators, between 1996 and 2016, the study uses the fully-modified OLS technique after establishing the absence of unit root and existence of long-run relationship amongst the variables of the model. Findings The findings confirm a non-linear relationship between external debt and economic with a positive net effect of 5. 05 increase in economic performance for a US rise in external debt. While the index of governance depicts a negative association with economic growth, the indicators show mixed results. The interaction effect of external debt and governance on economic performance explain that improved governance quality reduces its negative effect on economic performance by US1. 288 (with a total effect of –4. 180 + 1. 288* EXDBT) ; it equally enhances the (net) positive impact of external debt by US1. 288 (with a total effect 5. 05 + 1. 288*IQ). Practical implications The governments of the selected countries are, therefore, advised to seek other means of financing their expenditure while curbing financial mismanagement and its long-term impacts on growth. Also, governance infrastructures should be improved to restore both domestic and foreign investors’ confidence so that more private capitals may be attracted in lieu of excessive borrowings. Originality/value The research is the first to comprehensively examine the nexus between external debt, governance and economic growth in the selected countries, given their external debt position in SSA. This includes examining the impacts of each of the governance indicators and the comprehensive index of governance on growth. Furthermore, the study adds to the literature by examining the interaction effects of external debt and governance on economic growth of these countries. This gives both the partial and total estimates of the effects of external debt and governance on economic growth in the countries under consideration.