GST e-invoice data extraction and IRN verification

By Dynamite Docs. Published 2026-08-14. Updated 2026-09-11.

Turn GST invoices into clean, reviewed data for Excel and Tally.

GST e-invoice data extraction pulls the visible IRN, supplier and recipient [GSTIN](/accounting/india/gstin-extraction)s, invoice identity, item rows and tax values from a rendered PDF, image or structured source file. Dynamite Docs puts those values into confidence-scored rows for review. Extraction is not portal verification: a person or connected compliance process must still confirm that the IRN and signed QR data belong to the same invoice and that the document fits the business’s records. Export the checked fields to Excel, CSV, [JSON](/accounting/india/gst-invoice-to-json) or Google Sheets for accounting and reconciliation work.

Scope and tax review

Content owner: Dynamite Docs content team. Official-source review last updated: 2026-09-11.

Dynamite Docs extracts fields from source documents. It does not determine whether an invoice complies with GST law, prepare a return, or make a document ready to file. Review every extracted value against the original and use the current GST Portal guidance or a qualified tax professional before filing.

We publish the controls we actually operate rather than claiming certifications we do not yet hold.

Official GST sources

Steps for e-invoicing, GST Portal. IRP reporting, IRN, B2B QR code schema, and GSTR-1 auto-population.
CGST Rules: tax invoice particulars (Rule 46), Central Board of Indirect Taxes and Customs. Mandatory 16 invoice particulars and tax invoice format requirements.
E-Way Bill System FAQ, National Informatics Centre. Part A, Part B, transport details, and generation workflow under Rule 138.

Try a GST invoice or compare its storage, processing, and export limits.

The actual Dynamite Docs library import menu, with upload and Google Drive options.

The actual AI processing dialog showing the searchable model list and provider filters.

A purchase order beside its extracted text in the Text Editor.

A purchase order beside its structured details in the Table Editor.

A purchase order beside its extracted line items in the Table Editor.

A purchase order beside the Table Editor Totals tab, showing tax and the final total.

Purchase order text beside extracted document fields and confidence indicators.

The actual Export to Google Drive dialog with format, scope, file name and folder options.

GST e-invoice data extraction and IRN verification: sample source document and illustrative field names and values — **01 / Sample field guide** — Illustrated field guide. Example values may differ from the downloadable sample.

Dynamite Docs product screenshot with a vendor invoice beside extracted fields — **02 / Product review workspace** — Invoice example showing the shared review controls. Fields vary by document type.

E-invoices are digital, but manual entry still happens

An e-invoice is identified by its unique 64-character IRN, which must be captured alongside standard invoice fields for audit tracking.
While e-invoice data is encoded in a signed QR code, businesses receive rendered PDF files that still require data entry.
Verifying that supplier GSTINs, taxable amounts, and tax splits [match your purchase records](/accounting/india/gstr-2b-reconciliation) is essential before posting entries.
E-invoices frequently accompany e-way bills during goods transport, requiring matching between invoice values and transport documents.

Document types this workflow handles

GST e-invoice PDFs: IRN-verified electronic invoices with embedded text
Signed QR code images: embedded e-invoice QR codes and JSON summaries
E-way bills: goods transport records for the same transaction
Supplier reconciliation files: monthly purchase files to match against e-invoices

What gets extracted from a GST e-invoice

Fields are recognized from standard e-invoice layouts. A typical extraction provides:

IRN: 9f8b2c1a6e4d7f3a8b2c5d1e9f4a7b2c8d1e3f5a
Supplier GSTIN: 27AABCS1429B1ZP
Customer GSTIN: 29AABCC3456C1ZD
Invoice number: INV/24-25/0144
Invoice date: 2026-08-02
HSN / SAC code: 4820
Taxable value: ₹24,000.00
CGST / SGST amount: ₹2,160.00 / ₹2,160.00
IGST amount: ₹0.00
Invoice total (incl. tax): ₹28,320.00

E-invoice field example, Deccan Industrial Supplies, INV-DEMO-118. Fictional sample document. — Downloadable sample: INV-DEMO-118. Demonstration data for extraction practice.

A realistic example

Sample data. Not a real invoice or filing record.

E-invoices extract into structured rows like these, with IRN references captured for easy audit tracking:

IRN (first 16)	Invoice #	Date	Supplier GSTIN	HSN/SAC	Item	Taxable value	CGST	SGST	IGST	Total	Status
9f8b2c1a6e4d7f3a	INV/24-25/0144	2026-08-02	27AABCS1429B1ZP	4820	A4 copier paper	₹24,000	₹2,160	₹2,160	Not applicable	₹28,320	Matched
7c1d9f4e2b8a3c5d	INV/24-25/0145	2026-08-03	33AABCC3456C1ZD	8467	Rotary hammer	₹1,86,000	Not applicable	Not applicable	₹33,480	₹2,19,480	Matched
Not available	BILL-118	2026-08-05	29AABCC3456C1ZD	4820	Desk stationery	₹4,500	₹405	₹405	Not applicable	₹5,310	No IRN: flagged for review

What to validate before export

Validation issue

Verify IRN and QR-derived values against the signed invoice data.

Limitation

The extractor does not generate, cancel, or validate an IRN with the IRP.

Reviewed by Dynamite Docs content team. Last verified 2026-09-11.

Understanding GST e-invoices in your accounting workflow

Keep the complete IRN as text. Do not shorten it in the accounting record, convert it to a number or use only the visible first characters as a match key. The short value in the example table is for display; production exports should retain the full source value.

Compare the IRN with supplier GSTIN, recipient GSTIN, invoice number, date and total. A correctly read string can still be attached to the wrong PDF when files were renamed or merged. That identity check comes before line-item review.

Treat the e-invoice and e-way bill as different records. The e-invoice concerns invoice registration, while the e-way bill supports the movement-of-goods process. They may share invoice references and values, but one does not replace the other. Preserve each document’s number, date and status separately.

A missing IRN needs context. It may indicate a standard invoice, an unreadable field, an incomplete source or a document outside the e-invoice process. Extraction cannot determine the reason. Mark the value as missing or unresolved instead of declaring the invoice invalid.

Review line items and tax totals as you would on any GST invoice. Keep HSN or SAC, quantity, unit, taxable value, CGST, SGST, IGST, cess, rounding and gross total in separate fields where present. Reconcile the visible arithmetic and record any difference for a tax reviewer.

Dynamite Docs extracts and organizes e-invoice data. Portal checks, supplier reconciliation, amendments, tax treatment and return filing remain with your finance team, tax professional or connected compliance system.

Accurate e-invoice extraction with full data ownership

The IRN is an important reference. Preserve the complete text with the invoice identity and tax values, then verify it through the process your organization uses for e-invoice records.

Digital e-invoice PDFs may provide machine-readable text, while scans or QR images need visual processing. Both paths need review and do not replace portal validation.

All extracted rows remain saved in your private workspace, ready for export to Excel, CSV, JSON, or Google Sheets.

Questions, answered

What is the IRN and why is it important?

The Invoice Reference Number (IRN) is a unique 64-character hash generated by the Invoice Registration Portal (IRP) that validates an e-invoice. Dynamite Docs extracts the IRN so your purchase records link directly to official e-invoice filings.

Can it read e-invoices with QR codes?

You can upload e-invoice PDFs, images and structured files. Review any value proposed from visible QR content against the invoice and use the official or connected verification process when authenticity matters.

Does it validate e-invoice data against vendor records?

It extracts the essential matching fields (supplier GSTIN, invoice details, taxable value, tax split, and total) into clean spreadsheet rows so your team can verify them against vendor masters and purchase orders.

How does an e-invoice differ from an e-way bill?

An e-invoice is a tax invoice validated through the IRP, while an e-way bill is a goods transport document. Dynamite Docs provides dedicated extraction workflows for both document types.