Gcash is the popular mobile wallet and financial services app in the Philippines, comes with several potential problems that users should be aware of. The purpose of this study is to look at the factors affecting the effectiveness of online payment transactions using Gcash, with a particular emphasis on understanding the increased security, convenience, and efficiency that digital payments provide. Using a correlational descriptive design and drawing on Fred Davis's Technology Acceptance Model (TAM), the study methodically analyzed data using a variety of statistical tools such as frequency and percentage, weighted mean, t-test, f-test, and correlational analysis. The survey included 100 St. Michael’s College students as respondents using the likert-scale instrument, and it revealed that Gcash is mostly used for online payments because to its well-known security features, which appeal to the student demographic. It is found that Gcash is viewed as a convenient and secure payment mechanism, underlining its importance, particularly among students. The recommendations emphasize the need of promoting the benefits of Gcash through social media advertising and influencer marketing, with a focus on transparent and safe transactions to create trust in consumers. The study further encourages future researchers to do comparative research, using this work as a starting point for investigating comparable topics in the field of digital payment systems.

Keywords: Gcash, Mobile Payment Transactions, Perceived Usefulness.