GSTIN is a unique tax identification number assigned to every GST registered dealer. The first two digit of the GSTIN are represented by the State Code. The list of States along with the State Codes is provided below:
State Code List Under G.S.T
| Sr. No. | State | Code |
| 1 | JAMMU AND KASHMIR | 1 |
| 2 | HIMACHAL PRADESH | 2 |
| 3 | PUNJAB | 3 |
| 4 | CHANDIGARH | 4 |
| 5 | UTTARAKHAND | 5 |
| 6 | HARYANA | 6 |
| 7 | DELHI | 7 |
| 8 | RAJASTHAN | 8 |
| 9 | UTTAR PRADESH | 9 |
| 10 | BIHAR | 10 |
| 11 | SIKKIM | 11 |
| 12 | ARUNACHAL PRADESH | 12 |
| 13 | NAGALAND | 13 |
| 14 | MANIPUR | 14 |
| 15 | MIZORAM | 15 |
| 16 | TRIPURA | 16 |
| 17 | MEGHLAYA | 17 |
| 18 | ASSAM | 18 |
| 19 | WEST BENGAL | 19 |
| 20 | JHARKHAND | 20 |
| 21 | ODISHA | 21 |
| 22 | CHATTISGARH | 22 |
| 23 | MADHYA PRADESH | 23 |
| 24 | GUJARAT | 24 |
| 25 | DAMAN AND DIU | 25 |
| 26 | DADRA AND NAGAR HAVELI | 26 |
| 27 | MAHARASHTRA | 27 |
| 28 | ANDHRA PRADESH(BEFORE DIVISION) | 28 |
| 29 | KARNATAKA | 29 |
| 30 | GOA | 30 |
| 31 | LAKSHWADEEP | 31 |
| 32 | KERALA | 32 |
| 33 | TAMIL NADU | 33 |
| 34 | PUDUCHERRY | 34 |
| 35 | ANDAMAN AND NICOBAR ISLANDS | 35 |
| 36 | TELANGANA | 36 |
| 37 | ANDHRA PRADESH (NEW) | 37 |
