This project presents the design and implementation of a basic personal finance manager using HTML, CSS, JavaScript, and MongoDB. The goal is to assist users in tracking their income and expenses while encouraging financial discipline through a minimal, intuitive interface. Inspired by research emphasizing the importance of financial literacy and personal finance tools [1, 2, 4], the application allows users to manually input transactions, categorize expenses, and visualize data using simple graphs. By focusing on core functionalities such as expense tracking, category filtering, and persistent storage, the project targets users who are new to budgeting tools or find existing systems overly complex [3, 6]. This paper outlines the motivation behind the project, system architecture, key features, challenges faced, and its potential to promote financial self-awareness among young individuals. Future enhancements could include user authentication, real-time insights, and mobile responsiveness. Overall, the project aligns with modern trends in digital personal finance management and aims to bridge the gap between simplicity and functionality [2, 5, 6].