Glossary · GST and compliance (India)

What is a GSTIN? GST number format explained

A GSTIN (Goods and Services Tax Identification Number) is the 15-character number a business is given when it registers for GST in India. The first two digits are the state code, the next ten are the business's PAN, the next two are an entity code, and the last character is a check character.

Also called GST number, GST identification number, GST registration number · GST and compliance (India) · Last reviewed 25 September 2026 · General information, not legal or tax advice

How GST registration works

GST registration is PAN-based and state-specific: a business gets one GSTIN in each state it operates from. A hotel company with properties in Himachal Pradesh and Goa therefore has two GSTINs — one starting with Himachal's code, one with Goa's — under the same PAN. A registered business must also display its GSTIN on the name board at its principal place of business and at every additional place of business.

The GSTIN matters on every tax invoice: the supplier's is always printed, and a business customer's is what lets that customer claim input tax credit. Before issuing a company invoice, check the customer's number on the GST portal's taxpayer search — it returns the legal name, status and state.

Reading one

Take 07ABCDE1234F1Z5 — made up for this example:

  • 07 — the state code (7 is Delhi in the government's state code list);
  • ABCDE1234F — the PAN of the business;
  • 1Z — the entity code;
  • 5 — the check character.

How Nivasik handles it

  • GST invoices carry the property's GSTIN, and a business customer's GSTIN can be kept on their profile.
  • No GSTIN, no GST: until a GSTIN is on file, the rates Nivasik proposes on room charges, other charges and new POS items are 0%, and the screen says why. A rate somebody sets is theirs and is never rewritten.
  • A counter can carry its own GSTIN, legal name and state code; those are owner-only settings.

Sources

  1. Registration under GST Law (taxpayer services flyer, CBIC) — GSTIN structure, state-wise registration, display on the name board — checked 25 September 2026
  2. Search taxpayer by GSTIN — GST portal — checked 25 September 2026
  3. State code list — NIC e-invoice system — checked 25 September 2026

General information, last reviewed on 25 September 2026. It is not legal or tax advice: rules change by notification, so check the source, or ask your accountant or lawyer, before you rely on it.

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