AI Expense Tracker

A full end-to-end Flask + Bootstrap + OpenAI + SQLite project you can run in VSCode.

Features

• User registration and login
• Add, edit, and delete expenses
• Monthly budget tracking
• Dashboard with charts
• Automatic AI category suggestion when category is left blank
• AI-generated spending insights and recommendations
• SQLite database for easy local setup

Tech Stack

• Flask
• Flask-Login
• Flask-SQLAlchemy
• Bootstrap 5
• Chart.js
• OpenAI API
• SQLite

Project Structure

ai_expense_tracker/
│── app.py
│── requirements.txt
│── .env.example
│── README.md
│── instance/
│── static/
│   └── css/
│       └── styles.css
└── templates/
    ├── base.html
    ├── index.html
    ├── login.html
    ├── register.html
    ├── dashboard.html
    ├── add_expense.html
    ├── edit_expense.html
    └── insights.html

How to Run in VSCode

1. Open the project folder in VSCode

2. Create virtual environment

python -m venv venv

3. Activate virtual environment

Windows PowerShell

venv\Scripts\Activate.ps1

Windows CMD

venv\Scripts\activate

Mac/Linux

source venv/bin/activate

4. Install dependencies

pip install -r requirements.txt

5. Create .env

Copy .env.example to .env and add your key:

SECRET_KEY=super-secret
OPENAI_API_KEY=your_openai_api_key_here
OPENAI_MODEL=gpt-4.1-mini

6. Run the app

python app.py

Then open:

http://127.0.0.1:5000

Notes

• The app works without an OpenAI key for normal expense tracking.
• AI category suggestion and AI insights need OPENAI_API_KEY.
• Database file is automatically created in instance/app.db.

Good Resume Description

Built a full-stack AI Expense Tracker with Flask, Bootstrap, SQLite, and OpenAI API, supporting authentication, expense CRUD workflows, chart-based analytics, monthly budget tracking, and AI-generated financial insights.