DEV Community

azi jan
azi jan

Posted on

Building a Production-Ready Multi-Tenant ERP & POS SaaS Starter Kit with React 19 and Supabase

#react #supabase #webdev #saas

Building enterprise-grade SaaS systems from scratch takes weeks of repetitive architecture work: configuring multi-tenancy, securing database row-level security (RLS), setting up real-time inventory triggers, and building double-entry accounting structures.

To solve this, I built Invovo ERP — an unminified, full-stack multi-tenant ERP & POS SaaS starter kit powered by React 19, Vite, Tailwind CSS, and Supabase PostgreSQL.

⚡ Architecture & Key Features

1. Database-Level Multi-Tenancy (Supabase RLS)

Tenant data isolation shouldn't rely on fragile frontend filtering. In Invovo ERP, multi-tenancy is enforced directly inside PostgreSQL policies:

  • Every table (customers, suppliers, orders, inventory) binds to an isolated tenant_id.
  • Supabase Row Level Security ensures one tenant can never query or mutate another tenant's records.

2. High-Speed POS Terminal

  • Fast barcode & item search with reactive quantity increments.
  • Configurable cart-level discounts and tax settings.
  • Instant, printable receipt modal matching standard thermal slip specifications.

3. Double-Entry Ledgers & Khata System

  • Automatic debit/credit tracking for customer receivables and supplier payables.
  • Real-time balance recalculations on every transaction.
  • Exportable transaction ledgers with invoice references.

4. Inventory, Low-Stock Triggers & Financial Analytics

  • Custom unit registries (Pcs, Kg, Box, Liters, Meters).
  • Automated visual alerts when stock levels fall below safe thresholds.
  • Real-time Profit & Loss reports and revenue margin dashboards.

🚀 Live Interactive Sandbox

You can test the entire workflow live in the browser without any sign-up requirements:

📦 Source Code & Production Starter Kit

The complete codebase, documentation, and PostgreSQL schema migrations are available now:

Both Standard Developer ($49) and Unlimited Agency ($239) licenses are available. Feedback and technical discussions are welcome in the comments!

Top comments (0)