GST Tools

What these tools do

Most GST questions in day-to-day business fall into three groups: is this GST number real and currently active, how much tax applies to this transaction, and which classification code belongs on the invoice. The tools below cover those three groups. Each one works without an account, and the verification tools read from the same registration source described on our data sources and methodology page.

None of these tools change your GST filings or talk to the GST portal on your behalf. They are reference and checking tools. Where a figure matters legally — a tax amount on a filed return, or the classification of a product under dispute — confirm it with your tax adviser or against the official GST portal.

A practical order for checking a new supplier

1. Run the GSTIN through the format validator to rule out a typing mistake before doing anything else.
2. Verify the number to confirm the registration exists, is active, and belongs to the legal name printed on the supplier's invoice or quotation.
3. Check the classification code on the invoice lines against the HSN or SAC lookup, so the rate charged is consistent with what is being supplied.
4. Recompute the tax with the calculator when the invoice total does not obviously match the line items.

Written walkthroughs for each of these steps are in the GST guides library.