International Journal of Advances in Scientific Research and Engineering (ijasre) E-ISSN : 2454-8006 DOI: 10.31695/IJASRE.2025.5.1 Volume 11, Issue 5 May - 2025 https://ijasre.net/ Page 1 Adoption of Government Electronic Payment Gateway (GePG): Study of Users Satisfaction Integrated Concept Zubeida Abdalla Khamis 1 , Junseok Hwang 2 1 Ph.D. Scholar, 2 Professor 1 Department of Electronic Telecommunications and Computer Engineering. Karume Institute of science and Technology, Tanzania. 1,2 Technology Management Economic and Policy, College of Engineering, Seoul National University, Seoul, Republic of Korea _______________________________________________________________________________________________ ABSTRACT Digital transformation has significantly impacted the financial sector by enhancing responsibility, efficiency, and openness, particularly through electronic payment systems. In Tanzania, the Government Electronic Payment Gateway (GePG) aims to expedite public financial operations, enhance revenue collection, and improve service delivery. This study explores user satisfaction with the adoption and usage of Tanzania’s Government Electronic Payment Gateway (GePG). The study combines three well-known theoretical models (Technology Acceptance Model (TAM), the Unified Theory of Acceptance and Use of Technology (UTAUT), and DeLone & McLean’s IS) to create a framework for evaluating user behaviour, focusing on factors like ease of use, system quality, and external influences on adoption choices. Data were collected from 349 users across four regions of Tanzania using a quantitative survey methodology. Structural equation modelling (SEM) was used for analysis and testing the study hypothesis. The results indicate that users' decision to continue using GePG is notably affected by factors like perceived usefulness, social influence, facilitating conditions, system quality, and information quality. Significantly, perceived usefulness emerged as the main factor, underscoring the role of system efficiency in promoting acceptance. However, the study revealed that continuous usage was not notably affected by perceived ease of use and service quality. Despite the presence of government e-payment systems, the survey shows that users prioritize functional benefits over ease of use. This study fills the existing research gap of examining end-users’ acceptance and satisfaction of GePG. This study presents a validated conceptual model that is applicable to Tanzania and other developing countries, promoting ongoing technology adoption and efficient public service delivery. Key Words: Government Electronic Payment Gateway (GePG), Technology Adoption, User Satisfaction, Digital Payment, E-Government Services, Digital Platforms. ___________________________________________________________________________________________ 1. INTRODUCTION In the past few decades, technological advancements have changed the world into a digital era, which is characterized by digital platforms that facilitate innovation and improve service delivery [1]. The impacts of these technologies can be seen in the public benefit and economic value created with user satisfaction is a critical factor in the successful adoption and sustained use of these technologies [2, 3] Digital platforms can be categorized by their purposes, such as social media platforms for communication, knowledge platforms for education and idea exchange, service-oriented platforms for social services, and e-commerce platforms