Digital financial technologies have transformed the global banking landscape by enabling faster transactions, improved accessibility, and enhanced financial inclusion. In emerging economies such as Nepal, mobile banking platforms and Quick Response (QR) code-based payment systems have become essential tools for expanding digital financial services. Nepal Rastra Bank has actively promoted digital payment adoption through national payment infrastructure initiatives, including interoperable QR systems and mobile banking integration. Despite these developments, the scalability of digital banking services within Nepal’s cooperative banking sector remains limited due to infrastructural, technological, and organizational constraints. Cooperative financial institutions play a vital role in Nepal’s financial system by serving rural and semi-urban populations; however, many cooperatives lack the technological capacity required to implement large-scale digital banking systems. This study evaluates the scalability of QR payment systems and existing internet banking portals within the Cooperative Bank of Nepal, while assessing the readiness and institutional gaps for future mobile banking integration. The research adopts a mixed-method approach combining quantitative survey analysis with qualitative institutional assessment. Statistical analysis of digital service usage patterns indicates that QR payment systems and mobile banking services have gained moderate adoption, while advanced digital services such as automated loan repayments and ATM integrations remain limited. The study identifies key barriers affecting scalability, including digital literacy gaps, infrastructure limitations, and system interoperability challenges. The findings suggest that scalable digital banking architecture, cloud-based infrastructure, and stronger regulatory coordination are essential to support sustainable digital transformation within Nepal’s cooperative banking sector.