GST Invoice Validator

Enter details from any GST invoice to verify the supplier GSTIN, validate the HSN code, check the GST rate, and verify the tax calculation.

Why Validate GST Invoices?

Under Section 16(2) of the CGST Act, ITC can only be claimed if the supplier GSTIN is active and the return is filed. Fake invoices with inactive GSTINs, wrong HSN codes, or incorrect rates lead to ITC reversal, penalties up to 100% under Section 74, and prosecution under Section 132 for amounts exceeding ₹5 crore.

What This Tool Checks

Four checks: (1) Supplier GSTIN active on GSTN? (2) HSN/SAC code exists in tariff schedule? (3) GST rate matches standard rate for that HSN chapter? (4) CGST/SGST/IGST arithmetic correct for the given amount?

Limitations

Cannot verify goods/services delivery, invoice date vs registration period, or specific-period GSTR-1 filing. Use GSTR Filing Status, Health Score, or GSTIN Compare for deeper due diligence.

Frequently Asked Questions

Four checks: supplier GSTIN is active on the GSTN portal, HSN/SAC code exists in the official tariff schedule, GST rate matches the standard rate for that HSN chapter, and CGST/SGST/IGST components are mathematically correct.
It catches the most common red flags — inactive GSTINs, non-existent HSN codes, rate mismatches, and arithmetic errors. It cannot verify that goods were actually delivered or that the supplier filed GSTR-1.
Some HSN codes have multiple rates depending on value thresholds, composition scheme, concessional notifications, or exemptions. A mismatch is a flag to double-check, not necessarily an error.
The GSTIN check shows active status. For filing history, use the GSTR Filing Status tool to verify GSTR-1 filing for the specific period.
Our database covers the most common HSN and SAC codes. If yours is not found, cross-check on cbic-gst.gov.in or use our HSN Finder tool for broader searches.
Yes, completely free. No login required.
Yes. Tax calculation shows CGST+SGST by default. For inter-state supply, IGST applies instead — the tool notes this in the result.