Multi-Tenant Payroll & Tax Compliance System

Figma Prototype: Prototype

Introduction

The Multi-Tenant Payroll & Tax Compliance System automates tax filings, payroll management, and compliance for multiple tenants (businesses/users). It simplifies ITR-1 (Sahaj), ITR-2 (Sugam), GST return filing, payments, user management, and transaction tracking while leveraging Gemini AI for automation, minimizing errors, and optimizing tax savings.

Key Features & Use Cases

• Payroll Processing: Automated salary disbursement, tax deductions, payslips.
• ITR Filing: Supports ITR-1 & ITR-2, auto tax calculations, deduction optimization.
• GST Return Filing: Simplified GST return submission, compliance automation.
• Payments & Transactions: Tracks income/expenses, generates financial reports.
• AI-Powered Tax Assistant: Automates tax calculations, personalized tax-saving recommendations, anomaly detection.
• Multi-Tenant Support: Role-based access for users, accountants, and admins.

Why This System is Better?

Feature	Existing Solutions	Our System
Multi-Tenancy	Limited	Full support for multiple businesses/users
Automated Tax Filing	Manual effort	AI-powered automation
AI-Powered Insights	No AI assistance	AI-driven tax recommendations & anomaly detection
Processing Speed	Slow	Fast, scalable with Supabase
Scalability	Limited	Cloud-ready, serverless infrastructure

Technology Stack

• Frontend: Next.js (SEO-friendly, SSR) + Tailwind CSS (utility-first styling)
• Backend: Supabase (open-source, scalable backend-as-a-service)
• AI Integration: Gemini AI (tax automation, chatbot, anomaly detection)
• Authentication & Security: Supabase Auth (JWT-based authentication, secure APIs)

System Architecture & Scalability

• Frontend (Next.js): User dashboard & visualization
• Backend (Supabase): Manages authentication, payroll, transactions
• Database (Supabase): Stores multi-tenant data, payments, filings
• AI Module (Gemini AI): Automates tax calculations & deductions

Advantages & Future Scopes

Advantages

• Faster tax processing with AI automation
• Multi-tenant support for businesses and accountants
• AI-powered insights for tax optimization
• Scalable cloud-based architecture

Future Scopes

• Regular updates for evolving tax laws
• Potential offline support for better accessibility

Database Schema (Supabase)

Users Table

• id (UUID, PRIMARY KEY)
• email (VARCHAR, UNIQUE, NOT NULL)
• password (VARCHAR, NOT NULL)
• role (VARCHAR, DEFAULT 'admin')
• created_at (TIMESTAMP, DEFAULT CURRENT_TIMESTAMP)

Businesses Table (One-to-One with Users)

• id (UUID, PRIMARY KEY)
• name (VARCHAR, NOT NULL)
• owner_id (UUID, FOREIGN KEY → users(id), NOT NULL)
• created_at (TIMESTAMP, DEFAULT CURRENT_TIMESTAMP)

Transactions Table

• id (UUID, PRIMARY KEY)
• user_id (UUID, FOREIGN KEY → users(id), ON DELETE SET NULL)
• business_id (UUID, FOREIGN KEY → businesses(id), ON DELETE SET NULL)
• amount (DECIMAL, NOT NULL)
• category (VARCHAR, NOT NULL)
• transaction_type (VARCHAR, CHECK ('income' OR 'expense'))
• created_at (TIMESTAMP, DEFAULT CURRENT_TIMESTAMP)

Tax Filings Table

• id (UUID, PRIMARY KEY)
• user_id (UUID, FOREIGN KEY → users(id), ON DELETE CASCADE)
• filing_type (VARCHAR, CHECK ('ITR-1', 'ITR-2', 'GST'))
• status (VARCHAR, CHECK ('pending', 'submitted', 'approved'))
• submitted_at (TIMESTAMP, NULLABLE)

Metadata Table

• id (UUID, FOREIGN KEY → tax_filing(id))
• user_id (UUID, FOREIGN KEY → users(id), ON DELETE CASCADE)
• url (VARCHAR, NOT NULL)

Installation & Setup

Prerequisites

• Supabase account setup

Clone the Repository

  git clone https://github.com/sristy17/next-payroll.git
  cd multi-tenant-payroll-tax-system

Install Dependencies

  npm install

Setup Environment Variables

Create a .env file and add your Supabase API keys.

<<<<<<< HEAD
  NEXT_PUBLIC_SUPABASE_URL=https://akcuqzqsubmwzydpdikp.supabase.co
  NEXT_PUBLIC_SUPABASE_ANON_KEY=your_supabase_anon_key
=======
  SUPABASE_URL=https://akcuqzqsubmwzydpdikp.supabase.co
  SUPABASE_ANON_KEY=your_supabase_anon_key
>>>>>>> main

Run the Application

  npm run dev

Contributing

1. Fork the repository.
2. Create a new branch.
3. Commit your changes.
4. Push the branch and open a pull request.

License

This project is licensed under the MIT License.