A government debt-to-GDP ratio exceeding ninety percent significantly slows long-term economic growth.
While studies widely agree that high public debt has a non-linear, negative impact on long-term economic growth, the specific 90% threshold is contested, with many researchers finding that negative effects can begin at substantially lower debt-to-GDP ratios or questioning the direction of causality.
The retrieved literature supports the broader claim that high public debt creates a non-linear drag on economic growth, but specifically contests the 90% threshold. Several studies support a threshold effect, but place the turning point lower (e.g., 60-80%), while others challenge the causal direction or the existence of a robust universal threshold. Therefore, the specific claim about the 90% mark is contested.
High public debt generally impacts long-term economic growth, though the specific ninety percent threshold and the direction of causality remain contested.
Cristina D. Checherita-Westphal, P. Rother. The Impact of High and Growing Government Debt on Economic Growth: An Empirical Investigation for the Euro Area. 2010. https://doi.org/10.2139/ssrn.1659559
This study finds a non-linear impact of public debt on growth with a turning point around 90-100% of GDP.
Balázs Égert. Public Debt, Economic Growth and Nonlinear Effects: Myth or Reality?. 2015. https://doi.org/10.2139/SSRN.2302837
This paper shows that the negative nonlinear effect of debt on growth is sensitive to modeling choices and often kicks in at much lower levels.
See more details
Princewill U. Okwoche, Christine S. Makanza. Public debt and economic growth in sub-Saharan Africa: Nonlinearity and threshold effects. 2023. https://doi.org/10.1080/23322039.2023.2256125
The authors find compelling evidence of a non-linear relationship with a debt threshold of 78-85% in most cases.
Festim Fetai, Besnik Fetai, Isuf Qabrati. Nonlinear public debt effect on economic growth: a dynamic panel threshold method. 2025. https://doi.org/10.1108/jes-07-2025-0544
The study identifies a dynamic threshold of 79.40% for the debt-to-GDP ratio beyond which growth is harmed.
J. Jacobs, K. Ogawa, E. Sterken, Ichiro Tokutsu. Public Debt, Economic Growth and the Real Interest Rate: A Panel VAR Approach to EU and OECD Countries. 2019. https://doi.org/10.1080/00036846.2019.1673301
The authors find no causal link from public debt to growth irrespective of debt levels, finding instead causation running from growth to debt.
The paper trail · every fact has a biography
Challenge the receipt
Citation formatting by citeproc-js (Frank Bennett) and the Citation Style Language project. Source and licenses.
Terms · Privacy · How verdicts work · Dispute this receipt