GST State Codes for Northeast India: Assam, Meghalaya, Manipur, Nagaland & All NE States

For businesses operating across Northeast India, GST (Goods and Services Tax) codes range from 11 (Sikkim) to 18 (Assam). It is important to know the correct state so as to ensure transactions are reported under the right jurisdiction and in compliance with the GST regulations. The first two digits of a GSTIN represent these state codes, which are used in invoicing, calculating taxes and filing returns.

Why GST state codes are important for Northeast businesses

GST state codes are essential for ensuring consistent tax treatment and compliance for businesses operating in the Northeast states.

• Transactions within the same state (e.g., Assam to Assam) attract Central GST (CGST) + State GST (SGST), whereas transactions made between states (e.g., Assam to Meghalaya) attract Integrated GST (IGST). 
• The state code associates every business with its respective jurisdiction, whether it is Arunachal Pradesh, Tripura, or any other state in the Northeast.
• Using the correct state code makes sure that GSTIN information on invoices is valid, reducing the risk of rejection during e-invoicing or return filing.
• State-wise classification helps match the transactions accurately in returns such as GSTR-1 and GSTR-3B, reducing mismatches and ITC issues.
• GST state codes also ensure that SGST revenue is correctly distributed to the appropriate state government.

GST state codes for Northeast India

The table below lists GST state codes for all Northeast states:

GST state codes for the Northeast states explained

Here is a detailed breakdown of GST state codes for all Northeast states:

Sikkim: 11

The GST state code used in Sikkim is 11. GSTINs beginning with 11 are businesses within Gangtok, Namchi and other areas and other areas of Sikkim.

Arunachal Pradesh: 12

Arunachal Pradesh has GST state code 12. GSTIN with the first character 12 indicates that it is registered in the state, and it covers regions such as Itanagar, Tawang and Pasighat.

Nagaland: 13

The GST state code for Nagaland is 13. The code is used by businesses registered in Dimapur, Kohima and Mokokchung.

Manipur: 14

Manipur has GST state code 14. GSTINs beginning with 14 are local businesses in this state, including Imphal and Thoubal.

Mizoram: 15

Mizoram has GST state code 15. GSTINs starting with 15 are used in transactions of Aizawl, Lunglei and other areas to ensure proper tax attribution.

Tripura: 16

Tripura has GST state code 16. This code is applied by businesses in Agartala, Udaipur and other regions.

Meghalaya: 17

Meghalaya has GST state code 17. This code is used by businesses in Shillong, Tura and Jowai as a part of their GSTIN.

Assam: 18

The state GST code of Assam is 18. GSTINs beginning with 18 are those registered in Assam, and include large commercial hubs like Guwahati, Dibrugarh and Silchar.

Need for GST state codes in Northeast India

GST state codes are used across major business and compliance procedures in the Northeast states to ensure the following:

• During GST registration, the selected state determines the first two digits of the GSTIN.
• The GSTIN mentioned on invoices has the state code in which the transaction is taking place, so the customer and the authorities know the source of the transaction.
• Returns such as GSTR-1 and GSTR-3B returns are handled depending on the state code. Subsequently, data is routed to the correct tax authority.
• State codes are used to authenticate the source and destination of goods when transferring within the Northeast states or to other states.
• Government systems verify GSTINs using state codes, and mismatches may result in rejection.
• Northeast state codes jurisdiction for refunds, audits and departmental notices.

Summing Up

GST state codes are necessary to determine the state of registration and properly classify and report GST transactions. For Northeast India, using the correct codes between 11 and 18 can ensure proper invoicing, tax calculation and even interstate compliance.

As businesses grow and process numerous transactions manually, maintaining accuracy becomes more challenging. TallyPrime can help standardise GST information, ensure correct use of state codes and consistent reporting to minimise errors and compliance risks.