The Impact of Public Debt on Economic Growth: A Review of Contemporary Literature

This article provides a detailed survey of existing theoretical and empirical literature on the impact of public debt on economic growth in both developing and developed economies. The aim of the article is to add to the existing debate on the relationship between public debt and economic growth in world economies. The survey finds diverse and, in some cases, inconsistent evidence on the relative impact of public debt on economic growth. Although the majority of the surveyed literature supports the negative effect of public debt on economic growth, several other studies have found a long-run positive impact of public debt on economic growth through the fiscal multiplier effect. The article also found that a few other studies support the Ricardian Equivalence Hypothesis (REH), which states that the relationship between public debt and economic growth is nonexistent. On balance, the article also found that there is a growing body of empirical evidence, which supports the presence of threshold effects in the relationship between public debt and economic growth. Overall, it concludes that theoretical models and empirical studies yield inconclusive results depending on a set of heterogeneous factors, including the level of development of the sampled countries, data coverage, methodology used, and the researchers’ choice of control variables, among other factors. This literature survey differs predominantly from other earlier studies in that it provides a comprehensive review of the linkage between government debt and economic growth, in addition to disentangling public debt into two components, domestic and foreign, and expounding on their relative effects on economic growth