A GST invoice OCR API for finance and engineering teams
Extract GSTIN, HSN/SAC codes, tax breakdowns, and line items from GST invoices through an API built to slot into your own accounting stack, RPA workflow, or internal tools — not a standalone dashboard you have to work around.
Fields extracted from every GST invoice
- GSTIN
- Invoice number
- Invoice date
- Place of supply
- Vendor
- Buyer
- HSN/SAC code
- Taxable value
- CGST
- SGST
- IGST
- Total amount
- Line items
Built to sit inside your workflow, not replace it
Most Indian finance teams already have an accounting system, an ERP, or a reconciliation sheet where GST invoice data needs to end up. A dashboard that requires manual export-and-import defeats the purpose. The GST invoice OCR API is designed to be called directly from your systems — a document comes in, structured fields go out, and your existing process picks up from there.
That matters most at volume: accounts payable teams processing hundreds of vendor invoices a month, GST reconciliation before filing, or an internal tool that needs invoice data without a person retyping GSTIN and tax breakdowns by hand.
File in, JSON out
Send a GST invoice file to the extraction endpoint and get back structured JSON — no template configuration per vendor format.
Handles varied invoice layouts
GST invoices arrive in dozens of different vendor formats. Extraction is built to read layout and tables, not match a fixed template.
Multiple export formats
The same extraction result is available as JSON, CSV, Markdown, or a reviewable table — pick what fits your pipeline.
Built for human review
Output is designed to be checked before it lands in your books, not auto-posted blind — see our Terms for why review still matters.
For teams that process GST invoices at volume
Accounts payable teams processing vendor invoices from dozens of suppliers, GST compliance teams preparing data for filing, and finance ops teams reconciling purchase invoices against goods received all run into the same bottleneck: someone has to read each invoice and key GSTIN, tax amounts, and HSN codes into a system before the data is usable. That step doesn't scale as invoice volume grows, and it's where transcription errors on tax figures tend to creep in.
An API changes where that work happens. Instead of a person opening each PDF, an internal tool or accounting system calls the extraction endpoint directly when an invoice arrives — by email attachment, vendor portal upload, or a shared drive — and gets structured fields back in the same request. The review step still happens, but it happens on structured data instead of a raw PDF.
GST-specific fields, not generic OCR text
Plain OCR gives you raw text off a page — it doesn't know that a particular 15-character string is a GSTIN, or that a number near "CGST" is a tax component rather than a line total. The extraction engine is built to understand GST invoice structure specifically: taxable value separated from CGST, SGST, and IGST; HSN/SAC codes tied to their line items; vendor and buyer GSTINs identified rather than guessed.
That distinction is what makes the output usable directly for GST reconciliation and books, instead of a wall of text your team still has to parse by hand. See the full field-extraction and full-document approach on the DocumentsAI homepage, or see the general-purpose GST invoice extraction flow if you don't need API integration.