Financial leverage and firm performance: An empirical review and analysis

Iqbal Md. M Islam, EXIM Bank Agricultural University BangladeshFollow

Abstract

This paper examines the dual impact of financial leverage on corporate performance by analyzing empirical data across developed and developing nations, industries, and different periods. Leverage can enhance profitability through tax benefits and improved efficiency, but it also maximizes financial risk, making its effects highly context dependent. Theoretical frameworks such as the Trade-off Theory, Modigliani-Miller Theorem, Agency Theory, and Pecking Order Theory offer diverse perspectives on how debt influences firm outcomes. Empirical findings reveal mixed results; moderate leverage may lower capital costs and boost performance, whereas unnecessary debt can lead to financial distress. Disparities emerge between developed and developing economies. Debt is often viewed as a tool to mitigate agency costs in mature markets, while weaker financial institutions in emerging economies associate high leverage with instability. Methodological differences, including regression analysis, panel data, and case studies, further contribute to varying conclusions. Despite extensive research, gaps remain in understanding non-linear relationships, external factors like regulation and market competition, and non-financial impacts such as innovation and sustainability. The study underscores the need for nuanced, context-specific approaches to leverage decisions, integrating firm-specific and macroeconomic factors. By synthesizing existing evidence, this paper provides actionable insights for managers, investors, and policymakers while advocating for further research to refine leverage strategies in dynamic economic environments.

Keywords

financial leverage, firm performance, capital structure, debt ratios, corporate finance

Chinese Abstract

财务杠杆与企业绩效：实证综述与分析

本文通过分析发达国家与发展中国家、不同行业及不同时期的实证数据，探讨财务杠杆对企业绩效的双重影响。杠杆可通过税收优惠与效率提升来提高盈利能力，但同时也会放大财务风险，使其效果高度依赖于具体情境。权衡理论、莫迪利亚尼—米勒定理、代理理论与优序融资理论等理论框架为债务如何影响企业绩效提供了不同的视角。实证研究结果呈现分歧：适度杠杆或可降低资本成本并提升绩效，而不必要的债务则可能导致财务困境。发达经济体与发展中经济体之间亦存在差异。在成熟市场，债务常被视为降低代理成本的工具，而在新兴经济体中，由于金融机构较为薄弱，高杠杆往往与不稳定性相关联。回归分析、面板数据及案例研究等方法上的差异，也进一步导致研究结论不尽相同。尽管已开展大量研究，但对于非线性关系、监管与市场竞争等外部因素，以及创新与可持续性等非财务影响的理解，仍存在研究缺口。本研究强调，杠杆决策需采取细致、情境化的方法，综合考量企业特征与宏观经济因素。本文通过整合现有证据，为管理者、投资者及政策制定者提供切实可行的见解，同时呼吁开展进一步研究，以完善在动态经济环境中的杠杆策略。

财务杠杆、企业绩效、资本结构、债务比率、公司财务

ORCID Identifiers

Iqbal Md. Mazharul Islam: https://orcid.org/0009-0000-7005-5582

DOI

10.5038/2640-6489.11.1.1359

Recommended Citation

Islam, I. M. (2026). Financial leverage and firm performance: An empirical review and analysis. Journal of Global Business Insights, 11(1), 15-29. https://www.doi.org/10.5038/2640-6489.11.1.1359