GST Update • October 2026
Expanding into a new State is an exciting milestone for any business – a new branch, a new warehouse, a new factory. Until now, though, it also meant a familiar chore on the GST Portal: filling in the same company details, director details and signatory details again and again, once for every State.
That is now changing. With effect from 1 October 2026, the GST Common Portal offers a new “Multi-State Registration” option. Businesses that need GST registration in more than one State or Union Territory under the same PAN can now start all those applications together, through one common flow. Here is what the facility does, what it does not do, and how to make the most of it.
What is the Multi-State Registration facility?
The portal home page now carries a separate Multi-State Registration option alongside the regular new-registration route. Instead of opening a fresh application for each State, you select all the States/UTs you need in one go, verify once, and receive a single Master TRN (Master Temporary Reference Number).
Common information is entered once against this Master TRN. When it is submitted, the portal generates individual TRNs for each selected State, carrying that common data forward. You then complete only the State-specific details for each application.
How the process works
- Open the GST Portal and choose Multi-State Registration.
- Select every State/UT where registration is actually required.
- Enter basic details – legal name, PAN, e-mail and mobile – and complete OTP verification.
- A Master TRN is generated.
- Fill in the Common Registration Information – business details, promoters/partners, authorised signatory, authorised representative and goods/services.
- Submit the Master TRN (current portal guidance indicates a 15-day window for this).
- Separate State-wise TRNs are generated with the common data pre-filled.
- Complete each State application – place of business, documents and Aadhaar authentication – and submit.
- Each State processes its application independently and, on approval, issues its own GSTIN.
What you enter once, and what you still enter State-wise
| Entered once (via Master TRN) | Completed separately for each State |
| Business details – legal name, PAN, constitution | Principal place of business |
| Promoters / partners / directors | Additional places of business |
| Authorised signatory | Premises proof – rent agreement, ownership or electricity documents, NOC |
| Authorised representative | Aadhaar authentication, where applicable |
| Goods and services (HSN / SAC) | State-level verification and approval |
The pre-filled common details remain editable within each State application, so any State-specific variation can still be accommodated.
What has not changed
The new option is a procedural convenience. The legal framework under GST continues exactly as before, and it helps to keep these points clear:
- One GSTIN per State, not one for India. Each State/UT approved still gets its own GSTIN. A Master TRN is only an application reference.
- Distinct persons. Under Section 25(4) of the CGST Act, each registration of the same PAN continues to be a distinct person – so supplies between your own branches, cross-charge and ISD considerations remain as they are.
- ITC stays registration-wise. Credit available in one State’s registration does not become available to another State’s registration merely because both were created through a common application.
- Compliance stays State-wise. Returns, tax payments, e-invoicing, e-way bills, reconciliations and amendments continue GSTIN by GSTIN.
Who can use it?
The facility is presently available to Normal Taxpayers only. Specialised registration categories – such as composition taxpayers, casual taxable persons, non-resident taxable persons, TDS/TCS registrations, Input Service Distributors and OIDAR suppliers – should continue with their existing registration routes.
Also note that one Master TRN supports one registration per State. If you need an additional registration within the same State (for example, a separate registration for another place of business), that is to be applied for through the regular procedure.
First things first: do you actually need a registration there?
The ease of ticking several States at once makes it tempting to register everywhere. Before you do, it is worth confirming where registration is legally required. Having customers in a State – or selling goods or services into it – does not by itself require you to register in that State. Broadly, a supplier registers in the States from which it makes taxable supplies. Every additional GSTIN brings its own returns, reconciliations and annual compliance, so registering only where required keeps your compliance load lean.
Example: A Pune-based IT consultancy billing clients in Bengaluru, Delhi and Chennai from its Pune office generally needs only its Maharashtra registration. If it opens an operational office in Bengaluru from which services are supplied, a Karnataka registration becomes necessary – and that is exactly when the Multi-State option (for multiple new States together) becomes useful.
A quick checklist before you apply
- Map the States where registration is genuinely required, based on where you have a fixed establishment or supply from.
- Verify that the legal name and constitution match PAN (and MCA records, for companies and LLPs).
- Double-check the common information carefully – since it flows into every State application, a single error gets multiplied.
- Keep State-wise premises documents ready: rent or lease agreement, ownership proof, recent electricity bill and consent/NOC from the owner.
- Ensure promoters and the authorised signatory are available for Aadhaar authentication in each application.
- Plan post-registration set-up: GSTIN-wise invoicing series, e-invoice and e-way bill configuration, and the treatment of common input services (ISD or cross-charge).
Looking ahead
This facility reflects a steady move towards simpler, more standardised GST registration. The simplified registration scheme for small and low-risk applicants has been in operation since November 2025, and further standardisation of documentation across States is on the GST Council’s agenda. For growing businesses, the direction is clearly towards less paperwork and quicker onboarding.
How we can help
Whether you are expanding into one new State or rolling out across several, Mittal & Company can help you identify where registration is required, prepare and file applications through the new Multi-State route, and set up State-wise compliance from day one – so your expansion stays smooth and focused on growth.
Conclusion: The new Multi-State Registration facility makes it easier to submit common information when applying for GST registration across multiple States. However, the underlying registration framework remains State-specific. Businesses that combine the new portal workflow with careful registration planning and a clear compliance process will be better positioned to expand without creating unnecessary administrative work.
Disclaimer: This article is for general informational purposes and is based on GSTN’s advisory dated 1 October 2026 and the GST registration framework referenced above. Portal procedures and applicable law may change. Obtain professional advice based on your business facts before making registration or tax decisions.
FAQ section —
1. What is GST Multi-State Registration?
GST Multi-State Registration is a facility introduced by GSTN on 1 October 2026 that allows eligible taxpayers to initiate GST registration applications for multiple States or Union Territories under the same PAN through a common workflow. It uses a Master TRN to enter common registration information once.
2. What is a Master TRN in GST?
A Master Temporary Reference Number is generated during the Multi-State Registration process. It allows applicants to submit common registration information before the portal generates separate TRNs for individual State applications. It is not a GSTIN.
3. Can one GSTIN be used in multiple States?
No. GST registration remains State-specific under the applicable framework. Each approved State registration receives its own GSTIN, even when all registrations belong to the same legal entity and PAN.
4. What is the deadline for submitting a Master TRN?
GSTN’s advisory dated 1 October 2026 specifies a 15-day submission window for the Master TRN information. Applicants should confirm the applicable deadline and instructions displayed on the portal before proceeding.
5. Who is eligible for Multi-State Registration?
GSTN’s advisory states that the facility is currently available to Normal Taxpayers applying for registration in multiple States or Union Territories under the same PAN. Specialised registration categories should verify their applicable registration route.
6. Do I need GST registration in every State where I have customers?
Not necessarily. Having customers in another State does not automatically create a registration requirement there. The answer depends on the nature of the supply, the establishment from which the supply is made and the applicable GST provisions.
7. Does the new facility eliminate State-wise GST compliance?
No. Each GSTIN continues to have applicable registration-specific obligations, including returns, tax payments, reconciliations and other requirements. The facility primarily reduces repetitive data entry during the application process.
8. What documents are required for GST registration in another State?
Depending on the application, businesses may need PAN and entity details, authorised signatory information, proof of the principal place of business, rent or lease agreements, ownership evidence, utility bills and owner consent or NOC. Applicants should follow the current document requirements for each State application.