The study aimed to measure the effect of using loans and equity in the capital structure on evaluating financial performance, whether in terms of profits or liquidity, in banks in the city of Al-Kharj through the descriptive analytical approach. Data was collected from the study population through a questionnaire, where 200 questionnaires were distributed, of which 187 were collected, and 183 were valid for analysis. Data were analyzed using PLS-SEM software. The validity and reliability of the data were confirmed. The results of hypothesis testing showed a weak positive effect of using equity on the financial performance (profits and liquidity) of banks in Al-Kharj city. It also turned out that there was a strong positive effect of using loans on financial performance (profits) in banks in the city of Al-Kharj, and there was no effect of using loans on financial performance (liquidity). In banks in Al-Kharj city. The researcher recommended conducting more studies on the effect of capital structure on the financial performance of banks in other regions in the Kingdom of Saudi Arabia to confirm the validity of the current study results.

In this paper, we attempt to answer the question of whether or not bank capital affects profitability and risk. The paper forms an unbalanced panel with 354 observations using both data of 35 banks over the period 2007-2018. Two-step GMM is used to estimate the impacts of bank capital on profitability and risk in order to eliminate endogeneity and serial correlation issues. As a proxy of bank capital, the bank equity ratio, and equity level are used. Return on assets (ROA), return on equities (ROE), and net interest margin (NIM) are used to measure bank profitability, whereas nonperforming loan ratio and loan loss reserve ratio are used to measure bank risk. Bank capital displays significant impacts on profitability, which is measured by ROA and ROE, whereas capital shows no impact on bank NIM. When the loan loss reserve ratio is considered as proxy of bank risk, bank capital does not affect bank risk. The equity ratio, the proxy of bank capital, displays significant negative impacts on risk, whereas the equity level, the other proxy of bank capital, shows positive impacts on bank risk.