OneAnalytics docs

GST co-pilot

The GST co-pilot is OneAnalytics' purpose-built assistant for Indian Goods & Services Tax workflows. It sits on top of your GSTR-2B, GSTR-2A, and purchase register data and answers GST-specific questions, highlights mismatches, and drafts filings.

What it does

  • Reconcile GSTR-2B vs purchase register — finds missing invoices, mismatched GSTINs, rate differences, and value differences within a tolerance you set.
  • ITC (Input Tax Credit) drill — "Which suppliers gave me ineligible ITC this quarter?"
  • Vendor scoring — vendors ranked by filing consistency, mismatch frequency, and total eligible ITC.
  • GSTR-3B draft — given your reconciled purchase register and sales register, produces a draft GSTR-3B summary ready for review.
  • Notice assistant — paste a GST notice; the co-pilot explains it, cites the relevant section, and suggests the response based on your data.

Prerequisites

One of:

  • Upload your GSTR-2B / 2A JSONs directly (Sources → Add → GSTR JSON)
  • Connect Tally / Busy — we pull the GST schedules
  • Connect your ERP's GST module (Zoho, Marg, etc.)

The co-pilot expects at minimum: invoices (with GSTIN, invoice number, date, taxable value, IGST/CGST/SGST), HSN codes, vendor master. More is better.

Example

You: Show me GSTR-2B to purchase-register mismatches for Mar 2026, tolerance ₹10. Co-pilot: 14 mismatches totalling ₹2.7L: - 8 invoices in GSTR-2B but not in register (₹1.1L). [table] - 5 invoices in register but not in GSTR-2B (₹1.3L). - 1 invoice with ₹18k rate difference (vendor filed 18 %, register has 12 %). [download as Excel] [open drill view]

HSN / SAC lookups

The co-pilot knows the GST rate tables (including the 2026 changes) and can validate HSN codes against expected rates. Wrong HSN on a line item? It flags the line and suggests the closest match.

E-invoicing & e-way bill

If you have e-invoicing enabled (above the ₹5 Cr threshold), the co-pilot reconciles IRN numbers, checks that every B2B invoice above ₹50k has an e-way bill, and flags gaps.

Compliance calendar

The co-pilot tracks your filing calendar — GSTR-1 (11th), GSTR-3B (20th), GSTR-9 (annual) — and sends reminder alerts with a pre-draft.

Privacy

Your invoice data never leaves our cloud. The LLM sees only schema and aggregates via the same tool-calling discipline as NL Q&A.

Not tax advice

The co-pilot is a productivity tool, not a tax advisor. Final filings must be reviewed by a qualified CA. We log every suggestion for audit.