Project – The impacts of exchange rate on the profitability of commercial banks in Nigeria

ABSTRACT

The study examined the impact of exchange rate on the profitability of commercial banks in Nigeria. The persistent fluctuations in the exchange rate of the Nigerian Naira and their implications for banking sector performance motivated the study. Specifically, the study sought to examine the effect of exchange rate on Return on Assets (ROA), determine the effect of exchange rate on Return on Equity (ROE), investigate the relationship between exchange rate fluctuations and the profitability of commercial banks, and assess the extent to which exchange rate volatility influences the financial performance of commercial banks in Nigeria. The study adopted an ex-post facto research design and utilized secondary data obtained from the annual reports and financial statements of six selected commercial banks in Nigeria, namely Access Bank Plc, First Bank of Nigeria Limited, Zenith Bank Plc, United Bank for Africa Plc, Guaranty Trust Bank Plc, and Ecobank Nigeria Limited. Data covering the period from 2015 to 2024 were analyzed using descriptive statistics, correlation analysis, and regression techniques. The findings revealed that exchange rate had a positive and significant effect on Return on Assets (ROA) and Return on Equity (ROE) of the selected commercial banks. The study further established a significant relationship between exchange rate fluctuations and the profitability of commercial banks in Nigeria. The results also showed that exchange rate volatility significantly influenced the financial performance of the selected banks during the study period. The hypothesis tested indicated that exchange rate fluctuations had a statistically significant effect on bank profitability; therefore, the null hypothesis was rejected. The study concluded that exchange rate remains a critical determinant of profitability and financial performance among commercial banks in Nigeria. The study recommended that commercial banks should strengthen foreign exchange risk management practices, adopt effective hedging strategies, and maintain balanced foreign currency asset-liability positions. The Central Bank of Nigeria should also formulate policies aimed at promoting exchange rate stability in order to enhance banking sector performance and financial system stability.

CHAPTER ONE

INTRODUCTION

1.1 Background to the Study

The banking sector plays a vital role in the economic development of every nation by facilitating financial intermediation, mobilizing savings, extending credit, and supporting investment activities. Commercial banks constitute the backbone of the financial system because they channel funds from surplus economic units to deficit units, thereby promoting economic growth and stability. In Nigeria, commercial banks operate within a dynamic macroeconomic environment characterized by fluctuations in inflation, interest rates, monetary policies, and exchange rates. Among these variables, exchange rate movements have emerged as one of the most significant factors affecting the performance and profitability of commercial banks.

Exchange rate refers to the price of one country’s currency expressed in terms of another country’s currency. It determines the value of domestic currency relative to foreign currencies and influences international trade, foreign investment, and financial transactions. According to the International Monetary Fund (IMF, 2024), exchange rate fluctuations significantly affect the balance sheets of financial institutions, especially banks that engage in foreign exchange transactions, international lending, and foreign currency-denominated investments. Exchange rate stability is therefore essential for maintaining confidence in the financial system and ensuring the profitability of banking institutions.

Nigeria has experienced persistent exchange rate volatility over the years due to its dependence on crude oil exports, fluctuations in global oil prices, foreign exchange shortages, inflationary pressures, and changes in monetary policies. The Nigerian foreign exchange market has undergone several reforms, including the Structural Adjustment Programme (SAP) introduced in 1986, which shifted the country from a fixed exchange rate regime to a market-determined system. Since then, the value of the Nigerian Naira has experienced significant depreciation against major international currencies such as the United States Dollar, British Pound Sterling, and Euro (Central Bank of Nigeria [CBN], 2024).

Exchange rate volatility has profound implications for commercial banks. Banks participate actively in foreign exchange markets through international trade financing, foreign currency deposits, remittances, and foreign investment transactions. Consequently, changes in exchange rates affect the value of banks’ foreign assets and liabilities, operational costs, foreign exchange earnings, and overall profitability. When exchange rates fluctuate unpredictably, banks may incur foreign exchange losses that reduce their earnings and negatively affect shareholder value (Adeniran, Yusuf, & Adeyemi, 2021).

Profitability is a critical indicator of bank performance and financial health. It reflects the ability of a bank to generate income from its operations while efficiently managing risks and costs. Common measures of profitability include Return on Assets (ROA), Return on Equity (ROE), Net Interest Margin (NIM), and Profit Before Tax (PBT). A profitable banking sector enhances financial stability, attracts investors, and contributes to economic growth through increased lending and investment activities (Akinyomi & Olagunju, 2022).

The relationship between exchange rate and bank profitability has attracted considerable attention among researchers and policymakers. Exchange rate depreciation can increase bank profitability when banks earn substantial income from foreign exchange trading and international transactions. However, excessive depreciation may increase the cost of servicing foreign obligations, worsen credit risks, and reduce profitability. Similarly, exchange rate appreciation may reduce foreign exchange earnings while improving the value of domestic assets. Therefore, the effect of exchange rate movements on bank profitability remains complex and depends on the structure of banks’ assets and liabilities (Mordi, 2021).

Theoretical explanations of the relationship between exchange rate and profitability can be found in several economic theories. The Purchasing Power Parity (PPP) Theory suggests that exchange rates adjust to reflect differences in inflation rates between countries. The International Fisher Effect argues that expected exchange rate changes are influenced by differences in nominal interest rates across countries. Furthermore, the Balance Sheet Theory explains that exchange rate fluctuations affect the value of foreign-denominated assets and liabilities, thereby influencing the financial performance of firms and banks (Krugman, Obstfeld, & Melitz, 2022).

Recent developments in Nigeria’s foreign exchange market have intensified concerns regarding the impact of exchange rate movements on commercial banks. The exchange rate unification policy introduced in 2023 led to significant depreciation of the Naira, causing substantial adjustments in banks’ foreign currency positions. While some banks reported gains from foreign exchange revaluation, others experienced increased operational risks and uncertainty (CBN, 2024). These developments underscore the need to examine how exchange rate fluctuations influence the profitability of commercial banks in Nigeria.

Empirical studies have reported mixed findings regarding the impact of exchange rates on bank profitability. For instance, Al-Homaidi et al. (2020) found that exchange rate volatility significantly affects bank profitability in developing economies. Similarly, Ndugbu and Okere (2022) reported a positive relationship between exchange rate depreciation and profitability among Nigerian banks due to increased foreign exchange trading income. In contrast, Olayemi and Michael (2023) found that exchange rate instability negatively affects commercial bank performance by increasing operational costs and credit risks. These conflicting findings indicate the need for further investigation within the Nigerian banking context.

Given the strategic role of commercial banks and the persistent volatility in Nigeria’s foreign exchange market, understanding the impact of exchange rate movements on bank profitability is crucial for policymakers, investors, regulators, and bank managers. This study therefore seeks to examine the impact of exchange rate on the profitability of commercial banks in Nigeria.

1.2 Statement of the Problem

The Nigerian banking industry has witnessed significant transformations over the years due to economic reforms, globalization, technological advancements, and changes in monetary and exchange rate policies. Despite these developments, exchange rate volatility remains one of the most persistent challenges confronting commercial banks in Nigeria. The continuous depreciation and instability of the Naira have generated concerns regarding their implications for bank profitability and financial stability.

In recent years, Nigeria has experienced severe foreign exchange challenges characterized by multiple exchange rate windows, foreign currency shortages, speculative activities, and periodic devaluation of the Naira. These developments have resulted in increased uncertainty in the banking sector. Since commercial banks engage extensively in foreign exchange transactions, fluctuations in exchange rates directly affect their earnings, operational efficiency, asset valuation, and risk exposure. While some banks benefit from foreign exchange revaluation gains, others suffer losses arising from currency mismatches and increased foreign liabilities.

The persistent volatility in exchange rates has also created difficulties in financial planning and risk management among commercial banks. Banks with substantial foreign currency obligations may face increased repayment costs following exchange rate depreciation. Similarly, fluctuations in exchange rates can influence loan repayment capacity among borrowers engaged in international trade, thereby increasing the incidence of non-performing loans and reducing profitability.

Although several studies have examined the relationship between exchange rates and bank performance, their findings remain inconclusive. Some studies reported a positive relationship between exchange rate movements and profitability, while others found negative or insignificant effects. Furthermore, the recent exchange rate reforms and Naira depreciation have altered the operating environment of Nigerian commercial banks, creating a need for updated empirical evidence.

Consequently, there is uncertainty regarding the extent to which exchange rate fluctuations influence the profitability of commercial banks in Nigeria. This knowledge gap necessitates an investigation into the impact of exchange rate on the profitability of commercial banks in Nigeria. It is against this backdrop that this study is undertaken.

1.3 Purpose of the Study

The main purpose of this study is to examine the impact of exchange rate on the profitability of commercial banks in Nigeria.

Specifically, the study seeks to:

1. Examine the effect of exchange rate on the Return on Assets (ROA) of commercial banks in Nigeria.
2. Determine the effect of exchange rate on the Return on Equity (ROE) of commercial banks in Nigeria.
3. Investigate the relationship between exchange rate fluctuations and the profitability of commercial banks in Nigeria.
4. Assess the extent to which exchange rate volatility influences the financial performance of commercial banks in Nigeria.

1.4 Research Questions

The following research questions guide the study:

1. What effect does exchange rate have on the Return on Assets of commercial banks in Nigeria?
2. What effect does exchange rate have on the Return on Equity of commercial banks in Nigeria?
3. What relationship exists between exchange rate fluctuations and the profitability of commercial banks in Nigeria?
4. To what extent does exchange rate volatility influence the financial performance of commercial banks in Nigeria?

1.5 Research Hypothesis

The following null hypothesis will be tested at 0.05 level of significance:

H₀: There is no significant relationship between exchange rate fluctuations and the profitability of commercial banks in Nigeria.

1.6 Significance of the Study

The findings of this study will be beneficial to the following groups:

1. Commercial Bank Managers: The study will provide insights into how exchange rate movements affect bank profitability and assist managers in developing effective risk management strategies.
2. Central Bank of Nigeria (CBN): The findings will help policymakers evaluate the effectiveness of exchange rate policies and formulate measures aimed at promoting financial sector stability.
3. Investors and Shareholders: The study will enable investors to understand the implications of exchange rate fluctuations on bank earnings and investment returns.
4. Government and Economic Planners: The study will provide useful information for designing economic policies that enhance exchange rate stability and support sustainable banking sector growth.
5. Researchers and Academics: The study will contribute to existing literature on exchange rate and bank profitability and serve as a reference material for future studies.

1.7 Scope of the Study

This study focuses on the impact of exchange rate on the profitability of commercial banks in Nigeria. The study specifically examines exchange rate as the independent variable and profitability indicators such as Return on Assets (ROA), Return on Equity (ROE), and Profit Before Tax (PBT) as the dependent variables.

The study is limited to six selected commercial banks in Nigeria, namely Access Bank Plc, First Bank of Nigeria Limited, Zenith Bank Plc, United Bank for Africa (UBA) Plc, Guaranty Trust Bank (GTBank) Plc, and Ecobank Nigeria Limited. These banks were selected because they are among the largest and most prominent commercial banks in Nigeria, with extensive involvement in foreign exchange transactions, international banking operations, and significant contributions to the Nigerian financial sector.

Geographically, the study is confined to Nigeria, where the selected banks operate under the regulatory framework of the Central Bank of Nigeria (CBN). The study investigates how fluctuations in the exchange rate of the Nigerian Naira against major foreign currencies influence the profitability performance of these banks.

In terms of time scope, the study covers a ten-year period from 2015 to 2024. This period was chosen because it captures significant exchange rate fluctuations, foreign exchange policy reforms, economic recessions, currency devaluations, and the recent exchange rate unification policy in Nigeria. The period therefore provides adequate data for assessing the relationship between exchange rate movements and the profitability of the selected commercial banks.

1.8 Operational Definition of Terms

Exchange Rate: The value of the Nigerian Naira relative to foreign currencies, particularly the United States Dollar.

Profitability: The ability of commercial banks to generate earnings from their operations, measured using indicators such as ROA, ROE, and Profit Before Tax.

Commercial Banks: Financial institutions licensed to accept deposits, grant loans, and provide other banking services to individuals and businesses.

Exchange Rate Volatility: Frequent and unpredictable fluctuations in the value of a currency over time.

Return on Assets (ROA): A profitability ratio that measures how efficiently a bank utilizes its assets to generate earnings.

Return on Equity (ROE): A profitability ratio that measures the return generated on shareholders’ investments.

Project – The impacts of exchange rate on the profitability of commercial banks in Nigeria