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Do you need a separate GST registration for each state?
If your business is liable to register in more than one state or Union territory, it generally needs a separate registration in each one. Section 25 of the CGST Act provides for registration in each state or UT where the person is liable, and generally limits a person to one registration within a state or UT, subject to statutory exceptions. It also says that registrations held by the same person are treated as distinct persons for the Act’s purposes. Read section 25 of the CGST Act.
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This is different from optional separate registrations for multiple places of business or business verticals within a single state, which are governed by separate provisions. Whether you must register in a particular state depends on your business facts and applicable law; having a customer there does not, by itself, establish the obligation.
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What are TRN, ARN and GSTIN?
| Reference | What it means | When you use or receive it |
|---|---|---|
| TRN | Temporary Reference Number for a saved registration application; it is not an approved registration or GSTIN. | Generated after Part A details and contact verification. Use it to return to and complete the saved Part B application. |
| ARN | Application Reference Number acknowledging a filed application after the required filing and authentication steps are completed. | Sent after successful completion of the applicable submission and authentication sequence. |
| GSTIN | The identification number for a granted GST registration. | Issued after the registration is approved. A registration in one state does not automatically register the business in another. |
The GST Portal’s normal-taxpayer registration manual explains the portal application flow. Interface labels and authentication routing may change, so follow the current portal prompts.
How to apply for a GST registration in another state
Start a separate state-specific application for every other state or UT where your business is liable to register. The portal carries the state selected in Part A into the state context of the application, so check that selection carefully before proceeding.
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- Complete Part A. On the GST Portal’s registration service, choose the applicant type and the relevant state or UT, then enter the PAN and contact details requested. Complete the mobile and email OTP verification.
- Note the TRN. After Part A verification, the portal displays PAN-linked registrations and generates a TRN. Keep it available to resume the application. The manual says an unsubmitted saved draft is purged, along with the information saved against that TRN, after 15 days.
- Resume and complete Part B. Return to the saved application using the TRN. Complete the requested sections, including business details, people, principal and additional places of business, goods and services, state-specific information, and authentication and verification.
- Submit using the applicable authentication route. The portal’s process includes PAN validation and, where applicable, Aadhaar authentication. Depending on the applicant and routing, Aadhaar authentication may involve OTP or a biometric appointment. Complete the method shown for your application; one route should not be assumed to apply to every applicant.
- Save the ARN and monitor the application. The ARN is the acknowledgement of filing after the required authentication and final submission steps succeed. Use the portal to track that application’s status and respond if the officer requests clarification.
- Repeat for each other state or UT where registration is required. Each state-specific application has its own progress and approval; an approved GSTIN does not extend to other states.
What happens after you submit?
An officer examines the application and supporting documents. Under Rule 9 of the CGST Registration Rules, where the application and accompanying documents are found in order, the rule specifies approval within three working days from submission. This is a conditional statutory period, not a guarantee that every applicant will receive approval within three working days of starting Part A or of obtaining a TRN. Authentication, verification or a request for clarification can affect the process. See Rule 9 of the CGST Registration Rules.
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What to check if an application is delayed or incomplete
- Draft cannot be resumed: Confirm that you are using the TRN for the intended state-specific application. If the draft was not submitted within 15 days, the portal manual says the saved application is purged.
- Authentication is pending: Complete the authentication route displayed for that application, including an OTP step or biometric appointment if required. ARN acknowledgement follows successful completion of required steps.
- Officer has requested information: Read the notice for the specific application, provide the requested clarification or documents through the portal, and track the response and status.
- One registration is approved but another is not: Track each state’s application independently. The applicable checks and any clarification request attach to that application; the general sources do not establish that every state follows identical practical processing times.
When to get case-specific advice
The general rule does not decide every liability question, including whether a particular activity or place of business makes registration necessary in a state. For a multi-state operation with unusual work locations, contracting arrangements, or business structures, verify the current law and portal requirements against the facts. A GST practitioner or tax professional can help assess those facts; no general registration guide can guarantee an individual application’s outcome.
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