When a Business Needs a New GSTIN

A GST registration belongs to a PAN, not to a business name or a shopfront. When a proprietor incorporates a company, or a partnership firm converts into an LLP, the business may look identical to its customers, but in law a new person is now running it. That new person needs its own GSTIN. The old one is cancelled, and the credit sitting in its ledger moves across only if you file the right form in the right order. This post covers which changes trigger a new registration, the sequence that keeps your credit intact, and what to check when it is a supplier of yours making the switch.

Why a new PAN means a new GSTIN

Characters 3 to 12 of every GSTIN are the holder's PAN, unchanged. The two characters before it are the state code, and the three after it are an entity number, a fixed Z and a check character. The full breakdown is in the GSTIN format explained.

Because the PAN is embedded, a GSTIN cannot outlive a change of PAN. A sole proprietorship's PAN is the proprietor's personal PAN, with P as its fourth character. The private limited company the proprietor incorporates gets a new PAN with C in that position. They are two different taxpayers, and no amendment can turn one into the other. The relationship between the two identifiers is set out in GST number vs PAN.

The Act says the same thing from two directions. Section 22(3) makes the person who takes over a business as a going concern, by succession or otherwise, liable to register from the date of transfer. Section 29(1) lets the old registration be cancelled where the business has been transferred, including on the proprietor's death, amalgamated, demerged or otherwise disposed of, or where the constitution of the business has changed.

Which changes need a new GSTIN, and which do not

The test is simple: after the change, does the business run under the same PAN? If yes, you amend. If no, the new entity registers and the old registration is cancelled.

The last row is not a constitution change, but it catches people for the same reason: the GSTIN encodes the state as well as the PAN. Which fields are amendable, and which need the proper officer's approval, is covered in how to amend GST registration details.

One caution on partnerships. Whether a firm survives the exit of a partner depends on the partnership deed and the number of partners left. A firm reduced to one person cannot continue as a firm, so what looks like a partner retiring can in fact be a dissolution and a new proprietorship under a new PAN.

Moving to the new registration, step by step

The order matters more than any single step. If you cancel the old registration first, you can lose the window to transfer its credit, and the business has a gap in which it cannot issue tax invoices.

1. Get the new entity's PAN. Incorporation or LLP registration gives you the PAN. Nothing on the GST side can start before it.
2. Apply for the new registration in Form REG-01 under the new PAN, with the new entity's constitution documents and authorised signatory. The mechanics are the same as any fresh application, set out in the GST registration process online. The effective date should line up with the date the business actually moved.
3. File Form ITC-02 from the old GSTIN once the new GSTIN exists, naming it as the transferee, and have the transferee accept it on the portal.
4. Apply to cancel the old registration in Form REG-16, choosing the reason that fits: change in constitution, transfer of business, amalgamation or death of the proprietor. Where the business is transferred, the form asks for the transferee's GSTIN. Rule 20 expects the application within 30 days of the event that warrants cancellation.
5. File the final return, GSTR-10, for the old registration after cancellation, and clear any returns still pending for the periods before the cancellation date. See GST cancellation and revocation for how the final return works.

Tell your customers the new GSTIN before the first invoice under it. Their GSTR-2B will only show your invoices if your GSTR-1 reports them against the right GSTIN on both sides.

Carrying unutilised credit across with Form ITC-02

Section 18(3) of the CGST Act lets a registered person transfer the input tax credit left unutilised in its electronic credit ledger to the new business. It applies where the constitution changes on account of sale, merger, demerger, amalgamation, lease or transfer of the business, and only where that transfer specifically provides for the transfer of liabilities. If the new entity takes the assets but leaves the old one's liabilities behind, the credit does not travel.

Rule 41 sets out how. The transferor files Form GST ITC-02 on the portal with a request to move the unutilised credit to the transferee. It attaches a certificate from a practising chartered accountant or cost accountant confirming that the transfer provides for the transfer of liabilities. The transferee then accepts the details on the portal, and on acceptance the credit is posted to its electronic credit ledger. The inputs and capital goods that came across have to be accounted for in the transferee's books. On a demerger, the credit is split in the ratio of the value of assets of the new units as set out in the scheme.

Capital goods keep their history. If the new entity later sells a machine on which the old entity took credit, the Section 18(6) reversal still applies. The calculation is in ITC on capital goods.

Amalgamation, sale of business and death of a proprietor

Amalgamation and demerger. Where a scheme is sanctioned by a High Court, the NCLT or another authority, Section 22(4) makes the transferee liable to register from the date the Registrar of Companies issues the certificate of incorporation giving effect to the order. Section 87 covers the gap between the appointed date in the scheme and the date of the order. Supplies between the two companies in that period are taxable, they are treated as distinct persons until the order, and the transferor's registration is cancelled from the date of the order. Most transferees already hold a GSTIN in the state, so the practical work is usually ITC-02 and REG-16 rather than a fresh application.

Sale of a business as a going concern. The buyer registers from the date of transfer under Section 22(3) if it is not already registered in that state. The seller cancels. Whether credit moves across depends on the sale agreement: the liabilities have to go with the business for Section 18(3) to apply.

Death of a sole proprietor. The registration dies with the proprietor's PAN. Section 29(1) allows the legal heir to apply for cancellation, and the portal provides for REG-16 to be filed by the heir with death of the proprietor as the reason. If an heir continues the business, it is a transfer by succession: the successor registers under their own PAN, and CBIC has clarified that the unutilised credit can be carried across through ITC-02.

When it is your supplier whose GSTIN changes

On the buying side, a supplier's change of constitution usually shows up as a problem in your reconciliation rather than as an email. The old GSTIN in your vendor master turns to Cancelled with an effective date. The same trade name appears under a new GSTIN with a different PAN and a recent registration date, and a thin filing history because it has only just started filing.

Three things to do when you spot it:

• Update the vendor master to the new GSTIN and keep the old one on the record, closed, so historical invoices still match.
• Treat any invoice on the old GSTIN dated after its cancellation date as a red flag. A cancelled registration cannot report supplies for periods after cancellation, so those invoices will not reach your GSTR-2B and the credit will not be available to you. Ask for a fresh invoice on the new GSTIN.
• Watch the handover period. Invoices dated before the cancellation date can still be valid, but only if the supplier files GSTR-1 for those periods. Check the old GSTIN's filing history up to the cancellation date, as well as its status.

Cancellation can take effect from a date in the past, so a status check at onboarding does not cover you for long. Re-checking active suppliers on a schedule is what catches a constitution change within days instead of at year-end. Automated daily vendor GSTIN monitoring shows how to set that up. Our GSTIN verification API returns the registration status and the GSTR filing history in one call, at ₹0.50 a verification. For a one-off check, the GST number search tool gives five free lookups a day with no signup.

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