The rapid expansion of the digital economy has significantly transformed the banking sector in emerging economies, particularly through the adoption of digital banking channels. In Bangladesh, commercial banks have increasingly deployed mobile and online banking applications, Unstructured Supplementary Service Data (USSD), Point of Sale (POS) services, and Automated Teller Machines (ATMs) to enhance service delivery. However, customer satisfaction outcomes remain inconsistent. This study examines the impact of key digital banking channels on bank customers’ satisfaction in Bangladesh within a digital economy framework. A survey research design was employed, and primary data were collected from 372 bank customers across Dhaka, Chattogram, and Khulna divisions using structured questionnaires. Data were analysed using descriptive statistics and multiple regression analysis with SPSS version 25. The results reveal that mobile and online banking applications, USSD services, and ATM services have a positive and statistically significant effect on customer satisfaction. Conversely, POS services exhibit a significant negative relationship with customer satisfaction, indicating service reliability and operational challenges. Overall, the findings confirm that digital economy-driven banking channels significantly influence customer satisfaction in Bangladesh. The study provides practical implications for bank managers to improve digital service quality and for policymakers to strengthen regulatory frameworks that support sustainable digital banking and financial inclusion. This research contributes to the digital banking literature by offering an integrated assessment of multiple digital channels in an emerging economy context.