TechBilling is designed as a production-grade billing and inventory solution for retail shops, wholesalers, service centers, and restaurants. Built with Flutter for Windows desktop and a responsive PHP web panel, it operates fully offline with cloud sync support. Barcode scanning, GST tax computation, and thermal receipt printing are all built-in.

The POS screen provides a fast checkout interface where cashiers can search products by barcode or name, apply discounts, select tax categories, and process sales in seconds. It supports multiple payment modes — cash, UPI, card — and prints thermal receipts automatically after each transaction.

Built for speed — a full checkout from item scan to receipt print takes under 10 seconds.

Manage your entire product catalogue with categories, units, purchase prices, selling prices, and stock levels. Automatic low-stock alerts notify store owners before items run out. The system supports bulk import via CSV and barcode label printing for newly stocked items.

Generate professional GST-compliant invoices with auto-calculated CGST, SGST, and IGST. Invoices can be exported as PDF, shared via WhatsApp, or printed directly. Each invoice carries a unique reference number for ledger tracking and audit trails.

Maintain detailed customer and supplier accounts. Track credit balances, payment histories, and dues. Send payment reminders and generate account statements directly from the system.

Access daily, weekly, and monthly business reports. Visualize sales trends, top-selling products, profit margins, tax summaries, and purchase vs. sale comparisons. All reports are exportable to Excel or PDF for accountants and stakeholders.