Military Expenditure and Economic Growth Dynamics

Military expenditure interacts with economic growth through a complex mix of resource allocation, demand stimulation and opportunity costs. On one hand, defence outlays can foster technological innovation, support domestic industries and generate employment, thereby acting as a stimulus to aggregate demand. On the other hand, large or rising military budgets may divert funds away from education, health and infrastructure, reducing the capital available for productive investment and human-capital formation. Debate centres on the direction and magnitude of causality: whether defence spending drives growth or whether expanding economies permit higher military budgets. Empirical findings vary across regions and income groups, often reflecting differences in defence structures, financing mechanisms and institutional quality. In many developing economies, military spending has been found to crowd out social and productive investment in the short term, while advanced economies may benefit in the long run from defence-related research and dual-use technologies. The global rise in geopolitical tensions, shifting alliances and emerging security threats has renewed interest in these dynamics, highlighting the need to balance national security objectives against sustainable development goals and social welfare priorities.

Research from Nature Portfolio

Recent studies have explored how military outlays affect other government spending components and longer-term growth trajectories. One comprehensive analysis examined data from 1980 to 2021 in Egypt, employing a combination of Granger-causality tests and an autoregressive distributed lag framework. The results indicate that, while government spending components collectively exert causal influence on GDP growth, military outlays are associated with a short- and long-term negative effect on overall economic expansion. Moreover, defence budgets were found to influence social spending on health and education, suggesting a crowding-out of human-capital development in both horizons. These findings challenge the notion that military expenditure uniformly stimulates growth and underscore the importance of inter-sectoral budgetary trade-offs in middle-income settings.

Military Expenditure and Economic Growth Dynamics publication trend

The graph below shows the total number of articles in military expenditure and economic growth dynamics across all publications each year (not limited to Nature Index journals).

Technical terms

Quantile regression: A statistical technique that estimates the impact of explanatory variables across different points (quantiles) of the outcome distribution, revealing heterogeneous effects.

Autoregressive distributed lag (ARDL) model: An econometric approach that captures both short- and long-run relationships between variables by combining lagged dependent and independent terms.

Granger causality: A method for testing whether past values of one time series contain information that helps predict another series beyond its own history.

Crowding-out effect: A phenomenon where increased public spending on one sector (e.g. defence) reduces the funds available for other sectors, potentially hindering growth.

Defence burden ratio: The ratio of military expenditure to gross domestic product, used as a measure of the economic weight of a country’s defence commitments.

References

1. Military spending crowding out health and education spending: which views are valid in Egypt?. Humanities and Social Sciences Communications (2023).
2. The effect of military spending on economic growth in MENA: evidence from method of moments quantile regression. Future Business Journal (2023).
3. Does military spending stifle economic growth? The empirical evidence from non-OECD countries. Heliyon (2020).
4. The military expenditures and economic growth nexus: Panel bootstrap granger causality evidence from NATO countries. Panoeconomicus (2022).