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Effect of Debt Financing on the Profitability of Listed Companies in Nigeria

Abstract

Debt financing has become a fundamental source of corporate financing, enabling firms to acquire long-term assets, finance expansion projects, improve operational capacity, and sustain business growth. Debt financing refers to the acquisition of funds through borrowings such as bank loans, corporate bonds, debentures, and other interest-bearing obligations that require periodic repayment of principal and interest. The appropriate use of debt financing enables firms to leverage financial resources, benefit from tax shields associated with interest payments, enhance investment capacity, and maximize shareholder wealth. However, excessive reliance on debt financing may increase financial risk, interest obligations, bankruptcy costs, and financial distress, thereby adversely affecting profitability and long-term sustainability. In Nigeria, listed companies operate in a challenging economic environment characterized by high lending rates, exchange rate volatility, inflationary pressures, limited access to long-term capital, and fluctuating macroeconomic conditions. These factors have made financing decisions increasingly important in determining corporate profitability and financial stability. Consequently, firms continually seek an optimal capital structure that balances the benefits of debt financing against its associated risks. Although previous studies have examined capital structure and corporate performance, empirical evidence regarding the effect of debt financing on the profitability of listed companies in Nigeria remains limited and inconclusive. Against this background, this study investigates the effect of debt financing on the profitability of listed companies in Nigeria. The study is anchored on Trade-Off Theory, Pecking Order Theory, and Agency Theory. Trade-Off Theory posits that firms determine an optimal level of debt by balancing the tax advantages of borrowing against the costs of financial distress. Pecking Order Theory argues that firms prefer internally generated funds, followed by debt financing, before issuing new equity due to information asymmetry and financing costs. Agency Theory explains that debt financing can reduce agency conflicts by limiting managerial discretion over free cash flows while promoting greater financial discipline and accountability. Collectively, these theoretical perspectives provide a comprehensive framework for explaining the relationship between debt financing and the profitability of listed companies in Nigeria. The study adopts an ex post facto research design utilizing secondary data obtained from the audited annual reports and financial statements of companies listed on the Nigerian Exchange Group (NGX). A longitudinal panel data approach covering a ten-year period will be employed to examine the relationship between debt financing and profitability over time. Purposive sampling will be used to select listed companies with complete and consistent financial information throughout the study period. Debt financing will be measured using total debt ratio, debt-to-equity ratio, long-term debt ratio, short-term debt ratio, and interest coverage ratio, while profitability will be measured using Return on Assets (ROA), Return on Equity (ROE), Net Profit Margin (NPM), Earnings per Share (EPS), Return on Capital Employed (ROCE), and Profit After Tax (PAT). Data analysis will involve descriptive statistics to summarize the characteristics of the study variables, correlation analysis to determine the degree of association among variables, and panel regression techniques, including Fixed Effects and Random Effects models, to estimate the effect of debt financing on profitability. The Hausman specification test will determine the most appropriate estimation model, while diagnostic tests including multicollinearity, heteroskedasticity, autocorrelation, stationarity, cross-sectional dependence, endogeneity, normality, and model specification tests will be conducted to ensure the validity, consistency, and robustness of the empirical findings. The study anticipates that debt financing will have a significant effect on the profitability of listed companies in Nigeria. An optimal level of debt financing is expected to improve firms' investment capacity, enhance operational efficiency, facilitate business expansion, and increase profitability through the effective utilization of borrowed funds and tax advantages associated with interest expenses. Companies with efficient debt management practices are also anticipated to improve shareholder returns, strengthen financial flexibility, increase competitive advantage, and support long-term growth. Furthermore, prudent debt financing is expected to enhance capital utilization, improve liquidity management, and facilitate investment in productive assets. Conversely, excessive debt financing may increase financial risk, interest burden, liquidity pressures, and the likelihood of financial distress, thereby reducing profitability and weakening corporate financial stability. Consequently, maintaining an optimal capital structure is expected to contribute significantly to improving the profitability, financial resilience, and long-term sustainability of listed companies in Nigeria. This study is expected to make significant theoretical and empirical contributions to the literature on accounting, corporate finance, capital structure, and financial management by providing comprehensive evidence on the relationship between debt financing and the profitability of listed companies in Nigeria. Unlike previous studies that broadly examined capital structure and firm performance, this research specifically evaluates debt financing as a strategic determinant of corporate profitability using a longitudinal panel data approach and multiple indicators of leverage and profitability. The findings will provide valuable insights for the Nigerian Exchange Group (NGX), the Securities and Exchange Commission (SEC), the Financial Reporting Council of Nigeria (FRCN), listed companies, investors, creditors, financial institutions, policymakers, professional accounting bodies, and academic researchers regarding the strategic importance of debt financing in enhancing corporate profitability and financial sustainability. The study will also provide evidence-based recommendations for optimizing capital structure decisions, strengthening corporate debt management, improving financial planning, enhancing access to sustainable financing, promoting prudent leverage policies, and fostering long-term corporate growth in Nigeria.

Keywords: Debt financing, profitability, listed companies, capital structure, leverage, Return on Assets (ROA), panel regression, Nigerian Exchange Group (NGX), corporate finance, Nigeria.