GSTIN Number Format & Structure
Understand the 15-character GSTIN structure and use it to spot obvious GST number formatting problems.
GST official portals and references
Use these government/GSTN resources for authoritative GST records, registration and taxpayer search.
What you need to know
A GSTIN is a 15-character identifier. Understanding its structure can help you catch typing errors or obviously malformed numbers before you perform a taxpayer search.
How to check it
Use format checking as a first step only. A number can look correctly structured and still be wrong, cancelled or associated with different taxpayer details. Confirm the actual number through the official GST taxpayer-search facility.
What the result means
The standard GSTIN structure includes a two-digit state or union-territory code, a PAN-linked portion, entity-related characters, a default character and a checksum character. The format is useful for validation, but format alone does not prove that a GSTIN is registered or active.
Practical review tips
When checking an invoice, compare the GSTIN character-by-character with the supplier's records. Pay particular attention to commonly confused characters and accidental spaces or copied digits. Do not alter the GSTIN merely because a search result is unexpected.
Need a structured GSTIN report?
If you want a structured verification result rather than only a format check, SarkariSewa India offers an independent ₹20 GSTIN verification workflow. The fee is for the service and is not charged by the government.
Frequently Asked Questions
Is GSTIN verification the same as GST registration?
No. GST registration is the registration process, while GSTIN is the 15-character identifier associated with a GST registration record.
Is the SarkariSewa India verification service a government service?
No. It is an independent paid service. The official GST Portal remains the government reference for GST records and services.
Can a GSTIN format check prove that the number is active?
No. Format checking can identify obvious structural problems, but actual status and taxpayer details should be checked through the GST taxpayer-search facility.
GSTIN Format और Structure
GSTIN 15 characters का identifier है। Format check से केवल obvious typing errors पहचानने में मदद मिलती है।
महत्वपूर्ण सीमा
सही format दिखने वाला GSTIN भी गलत या किसी दूसरे taxpayer से जुड़ा हो सकता है। Actual status official GST taxpayer search से देखें।