Invoice and GST Data Extraction for B2B Payments

• Head of B2B Payments Operations
• Accounts Payable Product Manager
• Credit Operations Manager for invoice financing
• Finance Controller

B2B payment and invoice-financing platforms receive supplier invoices as PDFs, scans, Excel exports and e-invoice printouts with an IRN and signed QR code. Before money moves, someone has to confirm who is billing whom, for what, with what tax, and that the same invoice has not already been paid or financed.

We build an invoice extraction service that plugs into your payment or financing workflow through an API. It reads invoices in any common format, extracts header fields, line items with HSN or SAC codes and the CGST, SGST, IGST and cess split, and decodes the e-invoice QR code where present. It validates GSTIN structure, checks tax logic against the place of supply, recomputes totals and matches the invoice to its purchase order or payment request. A duplicate check compares supplier, invoice number, date and amount with everything already processed, allowing for reformatted numbers. Any bank detail that differs from the supplier master is always flagged. Exceptions go to an operations queue with the reason.

• Extracts supplier and buyer GSTIN, invoice number and date, place of supply, line items, HSN or SAC codes and tax splits
• Decodes the signed QR code on e-invoices and compares IRN data with the printed values
• Validates GSTIN structure and checks intra-state versus inter-state tax logic
• Recomputes line totals, tax amounts and invoice total, and flags arithmetic or rounding errors
• Detects likely duplicates across reformatted invoice numbers and re-uploaded files
• Returns structured JSON through an API, with confidence scores and page references

1. 01Receive the invoiceInvoices arrive through your platform's upload, an email-in address or an ERP integration, attached to a payment or financing request.
2. 02Extract fields and linesOCR and an LLM extract header, line and tax fields, and any e-invoice QR code is decoded.
3. 03Validate tax and arithmeticGSTIN structure, place-of-supply tax logic and totals are checked, and QR data is compared with printed values.
4. 04Match and de-duplicateThe invoice is matched to its PO or payment request, compared with previously processed invoices and checked against supplier bank details.
5. 05Resolve exceptionsLow-confidence fields, failed checks and possible duplicates go to an operations reviewer with the reason shown.
6. 06Release structured dataApproved invoice data flows back to your payment or financing engine and to the ERP export.

1. Intake
   • Upload API
   • Email-in mailbox
   • ERP or AP connector
2. Extraction
   • OCR with table detection
   • LLM extractor with GST invoice schema
   • E-invoice QR decoder
3. Validation
   • GSTIN and tax logic rules
   • PO matcher
   • Duplicate index with fuzzy matching
   • Supplier bank detail check
4. Review
   • Exception queue
   • Reviewer screen with source highlights
5. Delivery and audit
   • Webhook back to the payment or financing engine
   • Audit log

Operations reviewers resolve every exception, including possible duplicates, bank detail changes and tax-logic failures, before payment or financing proceeds. The service decides only whether an invoice needs a human look, never whether a supplier is paid.

• Your payment, AP or invoice-financing platform (API)
• Tally, SAP, Oracle or Zoho Books
• Email inbox used for invoice intake
• GST verification API from your existing GSP or provider
• Data warehouse for MIS

• No field auto-accepted below its agreed confidence threshold
• Duplicate check runs before any payment or financing release
• Bank details that differ from the supplier master always flagged
• Invoices and extracted data stay in your cloud region
• Monthly sample audit of auto-cleared invoices

• Supports the record-keeping behind GST input tax credit checks; final tax treatment remains with your finance or tax team.
• Supplier personal data, such as proprietor names, handled in line with the DPDP Act 2023.

• Fintech & Payments

  Settlement Report and Bank Statement Reconciliation

  Match gateway transaction logs, acquirer and UPI settlement files and escrow bank statements, explain the breaks and send only the unexplained ones to your reconciliation team.

• Retail, D2C & Quick Commerce

  Vendor Invoice and Credit Note Reconciliation

  Match vendor invoices, GRNs, RTVs and credit notes, recalculate what each vendor owes you from the agreements, and chase missing or short credit notes with evidence.

• Accounting, Audit & Consulting

  GST Return Reconciliation (GSTR-2B vs Books)

  Match GSTR-2B and 2A data against the purchase register invoice by invoice, find ITC at risk before GSTR-3B is filed, and draft supplier follow-ups for approval.

• Manufacturing

  Purchase Order, GRN and Invoice Three-Way Matching

  Read supplier invoices, match every line to POs and GRNs in SAP or Tally, check GST details and tolerances, propose debit notes and send only real exceptions to accounts payable.