Billing Management System —
GST Billing, Invoicing & Mobile App

What Is a Billing Management System?

A Billing Management System is software that automates the entire invoicing and billing process for a business — from creating GST-compliant invoices and tracking inventory to monitoring outstanding payments and generating financial reports. It replaces handwritten bills, Excel invoices, and disconnected ledgers with a single, integrated platform accessible from a desktop or mobile device.

How It Eliminates Manual Billing Errors

Manual billing — whether on paper or in Excel — introduces errors at every step: wrong tax calculations, incorrect item prices, missed discounts, and duplicate entries. The Uniums Billing System eliminates these through:

• Predefined product catalogue — items are added once with fixed prices, HSN codes, and GST rates. The billing operator selects from the catalogue; there is no manual typing of prices.
• Automatic GST calculation — the system calculates CGST, SGST, and IGST based on the item's tax slab and transaction type. No manual tax arithmetic.
• Sequential invoice numbering — invoice numbers are generated automatically in sequence, preventing duplicates and gaps in records.
• Validation checks — the system flags zero-value items, missing customer details, and items below minimum margin before an invoice is saved.

GST Invoice Generation

Every invoice generated by the Uniums Billing System is fully GST-compliant and includes all fields required by the GST Act:

• Supplier GSTIN, customer GSTIN (for B2B transactions), and place of supply
• HSN/SAC codes for each item
• Itemised CGST, SGST, and IGST breakdowns
• Invoice number, date, and sequential numbering per financial year
• Digital signature support for e-invoices
• GSTR-1 summary report generated automatically for monthly filing

Invoices are generated as professional PDFs with your company letterhead, logo, bank details, and terms — ready to print or share digitally the moment a sale is confirmed.

Inventory & Stock Management

The billing system is directly linked to your inventory — every transaction automatically updates your stock levels:

• Real-time stock deduction — each sale invoice immediately reduces the quantity of sold items in inventory
• Purchase entry — goods received against a supplier invoice are added to inventory automatically
• Low-stock alerts — set minimum stock levels per product; receive alerts before you run out
• Stock valuation — view current inventory value by product, category, or warehouse
• Batch and expiry tracking — for businesses dealing in pharmaceuticals, food, or date-sensitive goods
• Multi-warehouse support — manage stock across multiple locations from one dashboard

Mobile Billing App

The Uniums Android billing app brings the complete billing system to your smartphone — ideal for field sales, delivery billing, and small shop owners who need to bill customers on-site:

• Create full GST invoices from your phone in under a minute
• Access your complete product catalogue and customer list offline
• Share invoices directly via WhatsApp, email, or as a downloadable PDF link
• Collect payments and mark invoices as paid from the field
• All data syncs to the central system when internet is available

For businesses with delivery personnel or field sales teams, the mobile app means invoices are created and sent at the point of delivery — eliminating the lag between delivery and billing that causes collection delays.

Payment Tracking & Reminders

Outstanding receivables are one of the biggest cash flow problems for small and medium businesses. The Uniums billing system provides complete payment lifecycle management:

• Each invoice is marked as Paid, Partially Paid, or Outstanding
• Automatic WhatsApp payment reminders sent to customers with overdue invoices — with a direct payment link
• Ageing analysis — see all outstanding invoices sorted by how many days overdue (0–30, 30–60, 60–90, 90+ days)
• Online payment collection via Razorpay — customers pay directly from the invoice link
• Payment receipts generated and sent automatically upon payment

Reports & Analytics

The Uniums billing system generates all the financial reports a business owner or accountant needs:

• Sales register — complete record of all invoices for any date range
• Purchase register — all supplier invoices and goods received
• GST summary — GSTR-1 and GSTR-3B data for monthly filing
• Customer ledger — complete transaction history per customer
• Outstanding receivables — all unpaid invoices with ageing
• Profit & loss summary — sales vs cost of goods for any period
• Top products & customers — identify your highest-selling items and most valuable customers

All reports export to PDF or Excel with one click — ready for your accountant, auditor, or management review.

Multi-Branch & Multi-User Support

For businesses operating across multiple locations, the Uniums billing system supports multi-branch operations from a single account. Each branch has its own invoicing, inventory, and reports — while the head office sees consolidated data across all locations. Role-based access ensures that billing operators see only what they need, while managers and owners have full visibility.

Why Businesses Switch to Uniums Billing

• 100% GST-compliant — always up to date with the latest GST rules and invoice formats
• WhatsApp integration built-in — send invoices and payment reminders via WhatsApp without any third-party tool
• Mobile app included — bill from anywhere, on any Android device
• Inventory linked automatically — no separate stock management needed
• Affordable pricing — flat pricing for unlimited invoices and users, no per-transaction fees
• 24/7 support — because business doesn't stop after office hours

FAQ