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website Development v1.0.0 Intermediate Free

GST Billing System with PDF Invoice Generator

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Updated 2 days ago

A Django-based GST billing web app that automates tax calculations and generates professional PDF invoices for Indian businesses.

Technologies & Skills

Python Django SQLite ReportLab Bootstrap HTML CSS

Tags

Django Python GST Bill
FREE

Download at no cost

What's Included

Complete Source Code
Documentation
Project Report
Presentation Slides
External Download Link

Support & Customization

Support: Basic
Custom modifications available

Available for paid custom modifications such as additional invoice formats, multi-user roles, payment gateway integration, or UI customization. Contact via chat...

File Size 76.48 MB
Last Updated Jun 26, 2026
Delivery External Link
Updates Included

Resource Links

Open Presentation Slides

BillFlow is a production-ready GST-compliant 

invoicing system built with Django 4.2. It automatically calculates CGST+SGST for intra-state and IGST for inter-state transactions across all GST slabs (0%, 5%, 12%, 18%, 28%).


Key Highlights:

• Auto-numbered PDF invoices with company branding

• Dynamic line items with real-time total preview

• Complete invoice lifecycle management

 (Draft → Sent → Paid → Cancelled)

• Customer and product database with full CRUD

• Monthly GST summary report for tax filing

• One-click CSV export of all invoice records

• Search and filter by invoice number, customer,

 date range, and payment status

• Secure login/logout with session management

• Full Django admin panel for data management


Tech Stack:

Backend — Django 4.2, Python

Database — SQLite

PDF Engine — ReportLab, xhtml2pdf

Frontend — Bootstrap 5.3, HTML, CSS


Ideal for small businesses, freelancers, and 

students learning real-world Django development.

Future Enhancements

  • Future Enhancements
  • Online payment integration
  • Email invoice delivery
  • Barcode/QR code support
  • Inventory and stock management
  • Sales analytics dashboard
  • Role-based user authentication
  • Cloud deployment with Docker
  • Mobile-responsive improvements
  • These sections are suitable for a Django GST Billing System project and can be used directly in your project documentation or submission.

Known Issues

  • Email notifications are not implemented.
  • SQLite is intended for development; PostgreSQL or MySQL is recommended for production.
  • PDF invoice generation can be enhanced.

Installation

  • Prerequisites
  • Python 3.10 or later
  • Git
  • pip (Python package manager)
  • Steps
  • Clone the repository:
  • git clone https://github.com/Sathvika14-chava/gst_billing.git
  • cd gst_billing
  • Create a virtual environment:
  • python -m venv venv
  • Activate the virtual environment:
  • Windows:
  • venv\Scripts\activate
  • Linux/macOS:
  • source venv/bin/activate
  • Install the required packages:
  • pip install -r requirements.txt
  • Apply database migrations:
  • python manage.py migrate
  • Start the development server:
  • python manage.py runserver
  • Open your browser and visit:
  • http://127.0.0.1:8000/



Usage

  • Log in to the application.
  • View the Dashboard for business insights.
  • Add and manage customer details.
  • Add products with GST rates and prices.
  • Create GST invoices with automatic tax calculations.
  • View invoice history and GST reports.
  • Export reports to CSV when required.
  • Manage billing records efficiently through the web interface

System Requirements

  • Operating System
  • Windows 10/11
  • Ubuntu 20.04 or later
  • macOS
  • Software
  • Python 3.10+
  • Django
  • SQLite
  • Git

Hardware

  • RAM: 4 GB minimum (8 GB recommended)
  • Storage: 500 MB free disk space
  • Internet connection (for cloning the repository and installing dependencies)


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