GST state code 18
Assam GST number search
GSTINs registered in Assam begin with 18. Search any of them below for registration details and current status.
Example:
State code
18
State / UT
Assam
GSTIN prefix
18XXXXXXXXXX
How a Assam GSTIN is put together
The number opens with 18 for Assam, followed by the taxpayer's ten-character PAN, a digit or letter for how many registrations that PAN holds in Assam, the default letter Z, and a checksum character. A full breakdown is on the GSTIN format page.
We check the pattern and checksum before running a lookup, so a mistyped Assam GSTIN is caught instantly. Valid numbers go through to a live registration lookup that reports whether the registration is active, cancelled or suspended — see GST status check.
We do not publish lists of Assam taxpayers or their GSTINs. Search a specific number you already hold, such as one printed on an invoice.
Frequently asked questions
What is the GST state code for Assam?
Assam uses GST state code 18. Every GSTIN issued there starts with 18.
How do I search a Assam GST number?
Enter the full 15-character GSTIN in the search box on this page. You get the registration status, legal name, taxpayer type and other available registration details.
Does a Assam GSTIN mean the business is based in Assam?
It means that registration was granted by the Assam jurisdiction. Businesses operating in several states hold a separate GSTIN in each one.
Useful GST tools
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GST status check
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GSTIN details
Every field a GST number lookup can return.
GSTIN format
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GST guides
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