The Shared Expense Splitter is a MERN Stack project that combines Category management and Recurring bills, built with Express. The project follows a clean, modular architecture where the React frontend, Express API, and MongoDB database stay separated, making it easy to test, extend, and present. It showcases practical full stack techniques while producing a working, demo-ready application.
Traditional offline and manual processes for this task are slow, limited to one place, and hard to scale. Without a full stack web approach built on Recurring bills and Express, users cannot access, manage, and share data easily from any device, and there is no centralized way to run the workflow.
This project applies MERN Stack techniques through Category management, orchestrated with Express and Recurring bills. The application is designed for usability and scale, with a responsive frontend, robust API, and clean data layer. It produces consistent, reusable results and can be adapted to related full stack tasks with minimal changes.
Express
Node.js
MongoDB
React
Modular full stack app around Category management and Recurring bills
Configurable settings and role based access
Clean REST API with error handling
Responsive interface for all devices
Reusable components for related features
Authentication and data persistence
The project is layered: the client layer builds the UI through Category management; the API layer exposes endpoints with Express and Recurring bills; and the data layer persists information via Multi-user support. Shared auth, validation, and state management modules support all layers, keeping the application robust and easy to extend.
Set up the project structure, database, and environment.
Build the API and data models with Category management.
Implement the core business logic using Express and Recurring bills.
Build the React frontend via Multi-user support.
Wire up end-to-end flows with auth, validation, and error handling.
Test the application, fix issues, and polish the UI.
Package the project, document it, and prepare the demo and viva report.
Build production-style MERN applications
Apply Financial data modeling and Budget calculations
Design REST APIs and MongoDB schemas
Build responsive React interfaces
Present and defend a complete MERN project in viva
Add real-time features with Socket.io
Add payment integration
Add mobile app support
Deploy to cloud and scale
The Shared Expense Splitter delivers a complete MERN Stack workflow — from frontend UI and REST API to database and deployment. It is practical, modern, and easy to explain, making it an excellent final year project that demonstrates in-demand full stack skills.
