As known to all, GSTIN (Goods and Services Tax Identification Number) is a 15 digit ID.

Knowing the structure of the GSTIN is important for a business for the following reasons:

1. To ensure that one’s suppliers have quoted the correct GSTIN in their invoices

2. To ensure that one mentions their own GSTIN correctly in invoices to customers – as input tax credit is dependent on this

3. To ensure that appropriate tax (whether IGST or CGST and SGST) are charged .e.g. If Supplier state code and “Place of supply” state code are different, then IGST will be charged

The 15 digit ID comprises of –

1. 2 digits signifying the state code;

Digit 1 and 2: GST State Code List of India: This state code list under GST, is prescribed as per the Indian Censes of 2011, and is as follows:

State code list under GST State State code list under GST State
01 Jammu & Kashmir 19 West Bengal
02 Himachal Pradesh 20 Jharkhand
03 Punjab 21 Orissa
04 Chandigarh 22 Chhattisgarh
05 Uttarakhand 23 Madhya Pradesh
06 Haryana 24 Gujarat
07 Delhi 25 Daman & Diu
08 Rajasthan 26 Dadra & Nagar Haveli
09 Uttar Pradesh 27 Maharashtra
10 Bihar 28 Andhra Pradesh
11 Sikkim 29 Karnataka
12 Arunachal Pradesh 30 Goa
13 Nagaland 31 Lakshadweep
14 Manipur 32 Kerala
15 Mizoram 33 Tamil Nadu
16 Tripura 34 Puducherry
17 Meghalaya 35 Andaman & Nicobar Islands
18 Assam 36 Telengana
37 Andrapradesh(New)

2. 10 digit PAN number;

Digits 3 – 12 represent the PAN of the entity, so that a nexus can be established between the GST and the PAN database.

3. 1 digit signifying number of registrations;

Digit 13 is Entity code, which signifies number of registration that an entity has taken within a particular state. It would be pertinent to note that a new registration in a different state will have GSTIN starting with a different state code. A registered person with single registration within a State would have number 1 as 13th digit of the GSTIN. If the same registered person gets a second registration for a second business in the same State, the 13th digit of GSTIN assigned to this second entity would be 2  and so on.

4. 2 digits having default and checksum values

 Last two digits are for the purpose of check digit.

(Author can be reached at

Author Bio

Qualification: Graduate
Company: ebizfiling India Private Limited
Location: Ahmedabad, Gujarat, IN
Member Since: 04 Oct 2017 | Total Posts: 14
Ishita is a young woman entrepreneur and currently the Operations Director at ebizfiling India Private Limited. In her entire career so far, she has led a team of 50+ professionals like CA, CS, MBAs and retired bankers. Apart from her individual experience on almost every facet of Indian Statutory View Full Profile

My Published Posts

More Under Goods and Services Tax

Posted Under

Category : Goods and Services Tax (6037)
Type : Articles (16005)
Tags : goods and services tax (4548) GST (4142)

One response to “India GST registration number Format – How to read”

  1. V.Gopalswamy, FCA,ACMA, ACS. says:

    Educative .i could learn what the 15 digits stand for. thanks.

Leave a Reply

Your email address will not be published. Required fields are marked *