Multi-Tenant Inventory SaaS with POS, GST & Multi-Shop Architecture

The challenge

The client needed more than a stock management system: counter sales and credit accounts, mixed product catalogs with HSN codes, Indian GST compliance, batch/expiry tracking, financial visibility (P&L, cash book, bank ledger), and team access across locations — all without forcing packaged ERP workflows. Spreadsheet stock, manual GST prep, and siloed billing tools caused stockouts, overselling, and hours of monthly reconciliation. They also required true multi-tenant SaaS architecture to onboard new shops as isolated tenants, not one-off installs.

Our solution

CSNexa delivered a custom inventory SaaS platform on Symfony 8 and PHP 8.4 with Doctrine ORM and MySQL. Each shop runs as an isolated tenant with its own products, sales, purchases, and reports, while a Super Admin layer provisions shops and manages the platform. Integrated POS handles Cash/Card/UPI/Mixed payments with GST-aware invoicing. Full inventory lifecycle covers purchases, stock movements, returns, and low-stock alerts. A reporting suite includes sales, purchase, P&L, GSTR-1/GSTR-3B, HSN summary, and expiry reports. ShopVoter and ShopContextService enforce shop-scoped access on every request. The platform deploys on AWS (EC2 + RDS) with automated scripts and an end-to-end verification suite covering 18+ report checks.

Key features

Shop dashboard & alerts

Today/week/month sales KPIs
Low stock alerts with drill-down
Quick actions: New Sale, Add Product, Stock Entry

Point of sale (POS)

Product grid with live stock
Customer lookup by name/phone
GST toggle, discount, Cash/Card/UPI/Mixed payments

Product & inventory

SKU, barcode, HSN, MRP, batch & expiry
LOW / OUT status badges
CSV catalog import

GST & reporting

GSTR-1, GSTR-3B, HSN summary
Sales, purchase, P&L, expiry reports
Bill-wise and day-wise breakdowns

Multi-tenant SaaS admin

Super Admin shop provisioning
Role hierarchy: Super Admin → Shop Admin → Employee
White-label branding per tenant (e.g. AgriShop)

Platform screenshots

Cloud inventory management system dashboard showing daily sales, monthly revenue, low stock alerts, and quick POS actions — Shop dashboard — sales KPIs, low stock alerts, and quick actions for managers.

Stock management system product list with SKU, pricing, low stock and out-of-stock status badges — Product catalog with color-coded stock badges (healthy, LOW, OUT) and inline management.

Inventory SaaS POS with product search, GST billing, and Cash Card UPI payment options — Integrated POS — product search, GST-aware totals, and multiple payment modes.

Sales report dashboard showing revenue, order count, average order value, and recent invoices — Sales analytics — revenue, order volume, average order value, and top sellers.

White-label inventory SaaS login screen for agriculture retail tenant AgriShop — White-label tenant login — same platform, branded per shop (e.g. AgriShop).

Results

Single platform replaces 5–8 disconnected POS, inventory, and GST tools
Real-time stock deduction on every POS sale prevents overselling
GSTR-1/GSTR-3B report generation cuts monthly GST prep from days to hours
Multi-shop SaaS provisioning — new tenants onboard in hours, not months
Demo tenant processed 64 orders and ₹1.1M+ monthly revenue with full invoice traceability
E2E verification suite validates report accuracy before every production deploy

Technologies used

Symfony 8 PHP 8.4 Doctrine ORM MySQL Twig AWS EC2 + RDS

Related services

Frequently asked questions

Is this inventory management software cloud-based?

Yes. CS Inventory is a browser-based cloud inventory management system deployable on AWS with MySQL RDS, accessible from desktop and tablet.

Does the platform support GST billing in India?

Yes. POS and invoices support GST toggling, HSN codes, and reports including GSTR-1, GSTR-3B, and HSN summaries.

Can one platform serve multiple shops or franchises?

Yes. Multi-tenant SaaS architecture isolates each shop's data while Super Admin manages provisioning — ideal for franchises and SaaS operators.

What industries does this stock management system support?

General retail, agriculture inputs, dairy, and customized verticals via business-type presets and white-label branding.

Can CSNexa build a similar inventory SaaS for our business?

Yes. CSNexa delivers custom inventory and SaaS modules with POS, GST, multi-shop architecture, and AWS deployment — scoped after a free discovery call.

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