Say you are opening a warehouse in Karnataka, a branch office in Telangana and a depot in Andhra Pradesh. You know the drill. The same PAN, the same partner details, the same list of goods, typed again for every state. From 1 October 2026 the GST portal has a new option that removes most of that repeat typing.
What changed
The portal now has a Multi-State Registration facility. You pick the states and union territories where you need a registration, fill one common business profile, and the portal gives you a single Master Temporary Reference Number, called a Master TRN. From that it creates a separate TRN for each state, with your common details already filled in.
Common details means the parts that do not change by state: PAN and legal name, promoter or partner details, authorised signatory, authorised representative, and your list of goods and services. You enter them once.
What it does not do
- You still get a separate GSTIN for every state. There is no single all-India GSTIN.
- Each state still checks your application on its own and can still raise its own queries.
- Returns, e-invoicing and e-way bills do not change. Filing stays state-wise.
- It is for normal taxpayers. A second registration inside the same state still needs a separate application.
So treat it as a form-filling shortcut, not a change in the law. The state-wise registration rule under the CGST Act stays exactly as it was.
Who this helps now
It helps most if you are applying in three or more states at the same time. Common cases: an online seller moving stock into marketplace warehouses in several states, a machinery firm opening service depots, a contractor taking work in a neighbouring state, or a services firm adding offices.
If you only need one more registration, the old route is just as quick. Do not wait for anything.
What to get ready before you start
- One clean set of master documents: PAN, constitution proof, board or partner authorisation, and signatory identity proof. Scan each once, name the files plainly, keep them in one folder.
- Per-state documents, which the common profile cannot cover: address proof for each place of business, rent agreement or electricity bill, and consent letter where the premises is not yours.
- A working digital signature for the authorised signatory, or a mobile and email that can take the one-time password. Each state application is signed separately.
- A decision on who will file returns in each state, before the GSTINs arrive. A registration with nobody watching it collects notices.
One more thing worth planning early: your invoice numbering and your books. Many states means many GSTINs feeding one set of accounts, and that is where small firms lose days every month.
How we can help
We build the layer underneath this. Kanakku reads your purchase and sales invoices, keeps branch-wise and state-wise books that agree with each other, and shows you what each GSTIN owes before your filing date. If your business is spreading across states this year, it is worth getting that structure right from the first GSTIN rather than the tenth. Happy to look at how your branches are set up and say what we would do, so do talk to us.
