This paper aims to study sustainable development initiatives in green banking practices of the banking sector and to investigate its adoption methods and the importance of practicing green banking at UNITED AMARA BANK(UAB). The contribution and function of UAB in environmental sustainability and the United Nations Sustainable Development Goals are also examined in this study. The present research article is of a conceptual type; it is founded, among other places, on a comprehensive literature review, financial institution websites, and literature evaluations. A series of research journal papers reinforced this study. The UAB website was utilized and evaluated to gain knowledge regarding the contribution of various green banking methods, both domestically and internationally, to sustainability. This case study's finding highlights a financial institution's pivotal role in driving sustainable practices and the importance of integrating sustainable development in banking operations. The case study of UAB serves as a compelling example of how banks can lead the way in embracing green finance and circular economy principles to advance sustainable development. This paper finds an overview of the sustainable development initiative in the banking sector, focusing on the UAB case study and its efforts to integrate green practices and promote sustainable finance. This paper highlights the broader implications of such initiatives for sustainable development and their alignment with the United Nations' Sustainable Development Goals 3, 4, 8, and 9.