GST State Code 11 — Sikkim
GST state code 11 is the code for Sikkim. Any GSTIN beginning with “11” was issued to a business registered in Sikkim under the Goods and Services Tax.
Where the code sits inside a GSTIN
A GSTIN is exactly 15 characters. The first two digits are the state code — 11 for Sikkim. Characters 3 to 12 are the PAN of the registered business, character 13 counts that PAN's registrations within the state (1–9, then A–Z), character 14 is the letter “Z” by default, and character 15 is a check digit computed from the first fourteen.
Worked example (fictitious PAN, valid structure and check digit):
11ABCDE1234F1ZD
Here 11ABCDE1234F1ZD reads as: registered in Sikkim, PAN ABCDE1234F, first registration for that PAN in the state, with a mathematically valid check digit. Do not invoice against example numbers — always verify the real GSTIN first.
GST administration in Sikkim
Sikkim, capital Gangtok, is one of India's smallest GST jurisdictions, administered centrally through the Siliguri Commissionerate of the CBIC Kolkata zone. Its taxpayer roll is dominated by pharmaceutical manufacturing plants around Rangpo and Namchi (drawn by erstwhile excise incentives), hydropower operators, and tourism businesses.
Verify a Sikkim GST number
All GST state codes
| Code | State / Union Territory |
|---|---|
| 01 | Jammu & Kashmir |
| 02 | Himachal Pradesh |
| 03 | Punjab |
| 04 | Chandigarh |
| 05 | Uttarakhand |
| 06 | Haryana |
| 07 | Delhi |
| 08 | Rajasthan |
| 09 | Uttar Pradesh |
| 10 | Bihar |
| 11 | Sikkim |
| 12 | Arunachal Pradesh |
| 13 | Nagaland |
| 14 | Manipur |
| 15 | Mizoram |
| 16 | Tripura |
| 17 | Meghalaya |
| 18 | Assam |
| 19 | West Bengal |
| 20 | Jharkhand |
| 21 | Odisha |
| 22 | Chhattisgarh |
| 23 | Madhya Pradesh |
| 24 | Gujarat |
| 26 | Dadra & Nagar Haveli and Daman & Diu |
| 27 | Maharashtra |
| 29 | Karnataka |
| 30 | Goa |
| 31 | Lakshadweep |
| 32 | Kerala |
| 33 | Tamil Nadu |
| 34 | Puducherry |
| 35 | Andaman & Nicobar Islands |
| 36 | Telangana |
| 37 | Andhra Pradesh |
| 38 | Ladakh |
| 97 | Other Territory |
| 99 | Centre Jurisdiction |
Frequently asked questions
Which state has GST state code 11?
GST state code 11 belongs to Sikkim. Every GSTIN issued to a business registered in Sikkim begins with the digits 11.
Where does the state code appear in a Sikkim GSTIN?
The state code is always the first two characters of the 15-character GSTIN. If a GSTIN starts with 11, the registration was issued in Sikkim. Characters 3–12 are the PAN of the business, character 13 is the entity number, character 14 is always “Z”, and character 15 is a checksum.
Is the GST state code the same as the state's vehicle or census code?
No. GST state codes follow the Indian Census 2011 numbering adopted by GSTN, which is different from RTO vehicle registration codes. Always use the two-digit GST code when filing returns or raising invoices.
What does it mean if my supplier's GSTIN does not start with 11 but they claim to operate from Sikkim?
It usually means the supplier is registered in a different state and supplies to Sikkim inter-state (IGST applies instead of CGST+SGST). If they invoice you claiming local registration with a mismatched state code, verify the GSTIN before paying — the place of supply affects your input tax credit.
Can one business have more than one GSTIN in Sikkim?
Yes. A business with multiple verticals or units in Sikkim can hold multiple GSTINs, all starting with 11 and sharing the same PAN — only the 13th character (entity number) differs. Search by PAN on GST Search to see every registration held by one PAN.