Centralised GST Multi-State Registration: Detailed Guide to the New Master TRN Mechanism
The GST portal has rolled out a new “Multi-State Registration” feature, reported on 1 October 2026, that allows businesses to initiate GST registrations in multiple States or Union Territories through a single centralised application flow. This is a technology change in the application process, not a change in the underlying State-wise registration structure under the GST law.
Under this functionality, the assessee creates one common business profile, receives a single Master Temporary Reference Number (Master TRN), and from this, the system generates separate State-wise TRNs for each selected State/UT with the common data already auto-populated. Each State continues to examine, approve and issue its own GSTIN separately under Section 25 of the CGST Act.
This article explains how the new flow works, what remains unchanged in law, who should consider using it, and practical precautions before using the Master TRN facility.
1. Core Change: What the “Multi-State Registration” Option Enables
The GST Common Portal now offers a dedicated entry point for assessees who need registrations in more than one State/UT at the same time.
1.1 New front-page option on the GST portal
- A new button, “Multi-State Registration”, appears on the home page of
www.gst.gov.in, alongside the existing “Register” and “Login” buttons. - The flow is accessed through
reg.gst.gov.in/registration/. - The assessee can select multiple States/UTs and create a single Master TRN that feeds into individual State TRNs.
1.2 One common profile, multiple State applications
Under the new feature:
- A single common business profile is captured once at the Master TRN stage.
- This profile is then auto-populated into each State-specific TRN created for the selected States/UTs.
- The assessee then logs into each State TRN separately and completes State-specific fields (such as additional place of business, local documents, jurisdiction, etc.).
- Each State authority continues to separately scrutinise and approve its own application and issues a distinct GSTIN.
The innovation lies in centralised data capture and reduced repeated typing, not in merging State registrations.
2. Earlier Process vs New Multi-State Registration Flow
To understand the significance of the new facility, it is useful to contrast it with the previous approach on the portal.
2.1 Comparison of key process elements
| Aspect | Earlier Process | Now – Multi-State Registration |
|---|---|---|
| Application flow | Separate REG-01 for each State/UT |
One consolidated initiation for multiple States/UTs |
| TRN generation | Independent TRN for each State application | One Master TRN for all selected States, then distinct State TRNs per State |
| Basic business details | Re-entered from scratch for every State | Entered once as common profile; auto-filled into each State TRN |
| Entry route on portal | Services > Registration > New Registration |
Directly via “Multi-State Registration” on home page |
| Number of States in one application | Only one State/UT at a time | Multiple States/UTs can be selected in one go, but only one registration per State/UT is allowed against a single Master TRN |
The new facility streamlines data entry, especially for assessees expanding into several States simultaneously, without altering the legal requirement that each registration remains State-specific.
3. Step-by-Step Flow: How to Use the Multi-State Registration Facility
The process begins with creating user credentials and OTP verification and culminates in the generation of a Master TRN, followed by State-wise TRNs.
The field-level structure continues to align broadly with the existing
REG-01process, subject to what appears on the live portal and official GSTN advisories.
3.1 Accessing the feature
- Open
www.gst.gov.in.