Service quality plays an important role in the enhancement of the satisfaction level of customers or consumers and the financial performance of business organizations. Customers expect excellence in service quality and the gap between the expectations and availability of the services determines the level of the service quality of the business organizations. The primary objective of the study is to measure the service quality of Saudi Arabian banks. An online questionnaire containing SERVQUAL dimensions was administered, and responses were analyzed by applying the F test two sample variances, and rank correlation. Financial information extracted from the selected Saudi Arabian banks for the period 2018 to 2022 and ROA (return on assets) and ROE (return on equity) were calculated to get the financial performance. The combined study of rank analysis of financial variables and SERQUAL variables indicates that financial performance is positively and moderately governed by the Tangibility, Assurance, and Empathy dimensions of service. Overall, the expectations of the bank clients are higher than the availability of services in Saudi Arabian banks. There is a need to improve the Reliability and Responsiveness to enhance the level of service quality in Saudi Arabian banks.