Product Overview
Billing Book is a self-hosted PHP and jQuery web application built for retailers, wholesalers, and distributors who need a single system to handle sales, stock, purchasing, and finances. Instead of stitching together separate tools, you get a unified dashboard where the POS terminal, inventory ledger, supplier portal, and accounting reports share the same data in real time. The codebase ships with complete, unencrypted source files so your developers can tailor workflows, add custom fields, or integrate third-party APIs without vendor lock-in.
Key Features
- Fast POS Interface — Touch-friendly screen for quick sales, returns, and hold orders with barcode scanning support.
- Inventory & Warehouse Control — Track stock across multiple locations, set reorder points, manage batches/serials, and run physical counts.
- Purchase & Supplier Management — Create purchase orders, receive goods against POs, and maintain supplier ledgers with payment history.
- Double-Entry Accounting — Auto-posting of sales, purchases, payments, and adjustments; trial balance, P&L, and cash-flow reports ready for your accountant.
- GST Compliance — Indian GST invoice formats (B2B, B2C, export), HSN/SAC codes, auto-calculated CGST/SGST/IGST, and GSTR-1/3B export helpers.
- Multi-User Roles — Admin, manager, cashier, accountant, and custom roles with granular permissions per module.
- Responsive Bootstrap UI — Works on desktop, tablet, and mobile browsers; no separate mobile app required.
- Full Source Code & Easy Installer — PHP 7.4+/8.x, MySQL/MariaDB, one-click web installer for local (XAMPP/WAMP/Laragon) or remote hosting.
Benefits
- Single Source of Truth — Eliminate spreadsheet shuffling; sales, stock, and ledgers update instantly.
- Faster Checkout — Streamlined POS reduces queue time and cashier errors during peak hours.
- Audit-Ready Financials — Every transaction posts to the general ledger automatically, cutting month-end reconciliation effort.
- Scalable Architecture — Add warehouses, registers, or users without licensing tiers; the code is yours to scale.
- Lower Total Cost — One-time purchase, no recurring SaaS fees, and no per-transaction charges.
How It Can Be Used
- Retail chains managing multiple outlets and centralized stock.
- Wholesale distributors tracking batch-wise inventory and GST returns.
- Service businesses that need invoicing, payment collection, and basic accounting.
- Developers reselling a white-label ERP/POS foundation to local clients.
Specifications
- Technology Stack: PHP 7.4+ / 8.x, jQuery, Bootstrap 4/5, MySQL 5.7+ / MariaDB 10.3+
- Server Requirements: Apache/Nginx, mod_rewrite, PHP extensions: PDO, mbstring, gd, curl, zip, json
- Installation: Web-based installer (database config, admin user, sample data option)
- Source Code: 100% unencrypted PHP/JS/HTML/CSS — MIT-style usage rights for modification
- Languages: English UI (translation-ready language files included)
- GST Regions: India (CGST/SGST/IGST/UTGST), configurable tax structures for other jurisdictions
Why Choose This Product?
Most POS scripts on the market either lock you into a hosted subscription or ship obfuscated code you cannot audit. Billing Book gives you the full application layer — POS, inventory, purchasing, accounting, and GST reporting — with zero ongoing fees and complete freedom to customize. The responsive interface means your staff can sell from a counter terminal, a tablet on the shop floor, or a back-office desktop without extra licenses. If your business operates in India, the built-in GST invoice formats and return utilities save hours of manual compliance work every month.
Frequently Asked Questions
- Does it support barcode scanning?
- Yes. The POS screen accepts input from any USB/Bluetooth barcode scanner that acts as a keyboard wedge.
- Can I run it on shared hosting?
- Yes, provided the host meets the PHP/MySQL version and extension requirements. A VPS or cloud VM is recommended for multi-user concurrency.
- Is the database schema documented?
- The installer creates all tables automatically. Table and column names follow clear conventions; an ER diagram is not included but the code is fully readable.
- How are updates handled?
- Updates are delivered as replacement file sets. Always back up your database and customized files before applying.
- Can I add custom fields to invoices?
- Yes. Since the source code is open, developers can extend the invoice model, database columns, and PDF template as needed.
Conclusion
Billing Book delivers a pragmatic, self-hosted alternative to expensive cloud POS/ERP suites. You get a feature-complete billing, inventory, and accounting engine with GST readiness, multi-user security, and full source-code ownership — ready to deploy today and extend tomorrow. If you want control over your data, your customization roadmap, and your recurring costs, this PHP script is the practical choice.
