GST Number Search

A GSTIN (Goods and Services Tax Identification Number) is the 15-character code every GST-registered business in India is issued. It’s built from the business’s state code, PAN, a registration sequence number, a fixed character, and a check digit, so the number itself encodes real information about the taxpayer.

It validates that a GSTIN is built correctly: the right length and character pattern, a recognised state code, and a check digit that mathematically matches the other 14 characters. That’s enough to catch typos and obviously fabricated numbers, entirely in your browser.

Not on its own. A correctly formatted GSTIN can still belong to a cancelled registration, or simply not exist in government records. To confirm live registration status, legal name, and address, check the number on the official GST portal or through a connected verification API.

The GST department’s own portal lets you search any GSTIN manually, with a captcha, at services.gst.gov.in. It’s free but one number at a time, useful for occasional checks, less practical if you’re verifying vendors in bulk.

The official portal supports PAN-based search, which returns every GSTIN registered against that PAN across states. Name-based search only works for a limited set of businesses that have shared their GSTIN publicly, it isn’t a universal directory.

It’s the GSTIN’s built-in error detector. If even one character elsewhere in the number is mistyped, the check digit almost always stops matching, which is exactly how this tool catches typos before they end up on an invoice or a return.

Verify it on the official portal before you record the invoice. If it turns out to be cancelled or fake, raise it with the vendor immediately, accepting an invoice against an invalid GSTIN can put your input tax credit at risk.