GSTIN Verification Tool —
Verify GST Number Instantly

GSTIN — India's 15-Digit Business Identity Number

GSTIN stands for Goods and Services Tax Identification Number. It is a unique 15-digit alphanumeric code assigned by the Government of India to every business registered under the GST regime. Every GST-registered business — from a small kirana store to a large manufacturer — gets its own GSTIN. This number appears on every GST invoice, every return, and every compliance document.

Without a valid GSTIN on your supplier's invoice, you cannot claim Input Tax Credit (ITC) — which means you are paying tax you cannot recover. That one reason alone makes GSTIN verification essential before every transaction with a new supplier or vendor.

How to Read Any GSTIN Number

Every GSTIN follows a fixed 15-character pattern. Once you understand the structure, you can decode basic information about any business — state, PAN, registration count — just from the number itself.

All India GST State Codes List

The first two digits of every GSTIN identify the state of registration. Here is the complete list used in all Indian GSTINs.

6 Reasons to Always Verify GSTIN Before a Transaction

Skipping GSTIN verification is one of the most common and costly mistakes small business owners make. Here is exactly what you protect when you verify first.

Frequently Asked Questions about GSTIN

Everything you need to know about verifying GST numbers, understanding GSTIN format, and what to do when you find problems.