The GSTIN (Goods and Services Tax Identification Number) is a unique 15-digit alphanumeric code assigned to every registered person under GST. It is state-specific, meaning a business operating in multiple states needs separate GSTINs for each state.
Structure of GSTIN
Example: 27AADCS1234M1Z5
| Position | Characters | Meaning |
|---|---|---|
| 1-2 | 27 | State Code (Maharashtra) |
| 3-12 | AADCS1234M | PAN of the taxpayer |
| 13 | 1 | Entity number (same PAN, same state) |
| 14 | Z | Default value (Z) |
| 15 | 5 | Check digit |
State Codes (Examples)
- 01 - Jammu & Kashmir
- 06 - Haryana
- 07 - Delhi
- 09 - Uttar Pradesh
- 19 - West Bengal
- 27 - Maharashtra
- 29 - Karnataka
- 33 - Tamil Nadu
Uses of GSTIN
- Mandatory on all tax invoices
- Required for GST return filing
- Used for claiming Input Tax Credit
- Verification on GST portal
- E-way bill generation
GSTIN Verification
Anyone can verify a GSTIN on the GST portal (gst.gov.in) to check the registration status, legal name, and trade name of the registered person.
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