This study examines the impact of working capital management on the financial performance of listed commercial banks in Nigeria using panel data from 22 sampled banks over a period of ten years (2013–2022). The data were extracted from the annual accounts and reports of the sample banks. Both descriptive and inferential statistics were applied in analyzing the data. Descriptive statistics were used to summarize the key characteristics of the data, while inferential techniques, including correlation analysis and multiple regression analysis, were employed. Correlation analysis was used to assess the strength and direction of the relationships between working capital management variables and financial performance, while multiple regression analysis was employed to evaluate the impact of working capital management on financial performance. Based on the analyses of the data collected, the study found that inventory turnover (IT), account receivable turnover (ART) and account payable turnover (APT) have positive and significant impact in influencing the financial performance of the listed banks. However, cash conversion cycle (CCC) has negative and significant impact on financial performance of the listed financial services firms in Nigeria. The study therefore, concludes that working capital management can improve the financial performance of listed commercials banks in Nigeria. Based on the findings obtained from this study, the study recommended that the management of the banks should encourage the turnover of their inventory, account receivable and account payable in order to maximize their financial performance.