GST Billing Software in Tamil Nadu for Retail, Textile & Businesses

GST Invoicing & Tax Calculation

Generate professional GST tax invoices in A4, A5, and continuous thermal receipt roll formats. Automatically identifies intra-state vs inter-state transactions based on customer GSTIN prefix (State Code 33 for Tamil Nadu), applying correct CGST + SGST or IGST across 0%, 5%, 12%, 18%, and 28% slabs.

• Searchable HSN/SAC code directory with auto tax rates
• B2B, B2C (Large & Small), and Bill of Supply modes
• Reverse Charge Mechanism (RCM) support
• Automated item discounts and invoice round-off

e-Invoice (IRN) & e-Way Bill

Direct connection to the government Invoice Registration Portal (IRP). Transmit B2B invoice payloads with 1 click to generate the mandatory 64-character Invoice Reference Number (IRN) and digitally signed QR code embedded on the printed PDF.

• Real-time IRN generation in under 2 seconds
• Integrated e-Way bill for consignments over ₹50,000
• Pin-to-pin distance estimation across Tamil Nadu
• Transporter ID and vehicle number assignment

CA-Ready GST Reports

Eliminate month-end filing stress. TechFlow compiles your sales, purchases, credit notes, and debit notes into structured summaries ready for Chartered Accountant (CA) filing.

• GSTR-1 Summary: B2B, B2C, HSN summary & document series
• GSTR-2B ITC Reconciliation: Match purchase invoices with portal
• GSTR-3B Computation: Net tax payable with ITC offsets
• Export to Excel & JSON (Note: We do not claim automated direct portal filing)

POS & Barcode Billing

Engineered for high-traffic retail counters, textile showrooms, and supermarkets. Complete transactions in under 5 seconds with keyboard shortcuts, instant barcode scanner lookup, and thermal printing.

• 1D & 2D barcode generator with custom sticker printing
• 2-inch, 3-inch, and 4-inch ESC/POS thermal printers
• Split payments: Cash, UPI dynamic QR, Card, and Credit
• Hold/Resume bill, cash drawer kick, and shift Z-reports

Inventory, Purchases & Returns

Maintain accurate stock levels across multiple godowns and stores. Manage the full procurement lifecycle and handle returns with automated ledger adjustments.

• Purchase Orders (PO), Goods Receipts (GRN) & Inward Bills
• Sales Returns (Credit Notes) with stock restock
• Purchase Returns (Debit Notes) with vendor balance adjustment
• Batch numbers, expiration alerts, and reorder thresholds

Accounting, Ledgers & Reports

Full Indian double-entry bookkeeping architecture. Every sale, purchase, payment, and expense feeds directly into financial ledgers for real-time visibility.

• Customer Ledgers (Debtors) with 0-30, 31-60, 90+ day aging
• Supplier Ledgers (Creditors) with payment scheduling
• Payment vouchers, receipt vouchers, cash/bank books
• Real-time Day Book, Trial Balance, P&L & Balance Sheet

High-speed counter checkout for grocery stores, departmental stores, hardware shops, and consumer retail outlets. Scan barcodes, generate itemized thermal receipts, apply promotional bundle discounts, and accept split digital payments (UPI QR, Card, Cash).

Complete matrix management for ready-made apparel with size, color, fit, and brand variants. Print custom barcode price tags, manage seasonal sales returns, and track inventory across sales floors and stock godowns.

Specialized cataloging for pure silk sarees, bridal collections, and handlooms. Tag sarees with unique design numbers, border motifs, weight, and zari grade. Support wedding wholesale orders and retail billing with WhatsApp PDF invoices.

Manage tiered price lists (A, B, C client rates), volume discounts, credit terms, and overdue interest. Generate B2B tax invoices with automated e-Way bills and 1-click IRN e-invoicing for interstate and intra-state shipments.

Track raw material inward, Bill of Materials (BOM), production stages, job-work issuance, wastage tracking, and finished goods transfer to sales godowns with full GST compliance and SAC job-work invoicing.

Manage beat routes, sales representative order booking, batch numbers, near-expiry alerts, scheme discounts (buy 10 get 1 free), and rapid dispatch billing with payment collection receipts.

Dedicated restaurant POS with floor table layouts, Captain ordering, Kitchen Order Tickets (KOT) to kitchen printers, parcel billing, and 5% GST food calculations without ITC.

Service job card generation, spare parts inventory tracking, labor charge billing with SAC codes (9987 / 9983), and automated GST tax invoices with customer payment tracking.

Automated client appointment booking, service calendars, student fee collection, and institutional receipts integrated with TechFlow's financial accounting ecosystem.