Documents Required for GST Amendment: The Complete 2026 Checklist

Someone asked me last week, "I just shifted my office to a new address. Do I actually need all those documents, or is that just a GST portal scare tactic?" Fair question. The GST portal does make this feel more complicated than it needs to be.

 

Yes, you need documents. Which ones, though, depends entirely on what you're changing. An address amendment needs different proof than a bank account change, and a core field change (like your business name or principal place of business) goes through a whole different approval process than a non-core field change.

 

This article breaks it all down: which documents are required for a GST amendment, section by section, change by change. This is a cluster article in our broader GST Registration Amendment Guide; if you need the full process walkthrough, start there.

 

What Is a GST Registration Amendment and Why Do Documents Matter?

Worth knowing: the rent agreement must be registered or notarized to be accepted without question. An unregistered rent agreement often passes, but it's the one the officer scrutinizes most. Get it notarized if you want zero friction.

 

Electricity bills are the cleanest option here. They're current, they show the address, and every officer recognizes them. I'd choose a 2-month-old electricity bill over a registered rent agreement any day: faster, cleaner, no questions.

 

The GST principal place of business documents must also match the jurisdiction of your GST registration. If you're moving to a different state, that's not an amendment; that's a cancellation and fresh registration. Learn more in our guide: How to Change Address in GST Registration.

 

Adding a new branch or godown? The document requirements are identical to the principal place proof above. One difference: you also need to declare the nature of activity at the additional place (storage, sales, service, etc.) in the application form itself, not a separate document, but don't forget it.

 

The GST additional place of business documents standard is the same across all states; this is the standard per the Central Goods and Services Tax Act, 2017.

 

“A GST business name change requires proof of the legal name change from the relevant registering authority, an amended Certificate of Incorporation from the Ministry of Corporate Affairs (for companies), an updated Partnership Deed (for firms), or a fresh trade license (for proprietorships). The legal name in GST must match the registered name exactly.”

 

Here's what most guides won't tell you: you cannot change your GST business name independently. The name in your GST registration is pulled from your legal entity name, whatever is on your MCA filing, partnership deed, or trade license. So before you touch the GSTN portal, the legal name change has to be done at the source.

 

Documents to upload, by entity type:

This is a core field amendment, so it goes to the GST officer. The usual turnaround is 15 working days from the date of application, assuming documents are clean.

 

In my opinion, this is the one amendment where you should absolutely not DIY if you're a company. The MCA name-change process has its own timeline, and forms get a CA or company secretary to handle both the MCA filing and the subsequent GST amendment. Doing them separately creates mismatches that are genuinely difficult to clean up later.

 

Documents Required for GST Amendment: Authorized Signatory Change

• Letter of authorization on company letterhead (for companies and firms) OR a Board Resolution (for companies with a board)
• PAN card of the new authorized signatory
• Aadhaar card of the new authorized signatory
• Photograph of the new authorized signatory (in JPEG, max 100 KB)

“To change bank account details in GST registration, you need a cancelled check of the new bank account or the first page of the bank passbook showing the account holder's name, account number, and IFSC code clearly. The account must be in the legal name of the registered business.”

 

Bank account changes are non-core field amendments. No officer approval, the portal processes them automatically. Still, the document requirement is clear.

 

What you need:

The account name on the check must match the legal name in the GST registration exactly. Even one word off—'Pvt Ltd' vs. 'Private Limited'—can trigger a mismatch flag. Get this right before uploading.

 

Also, you can have multiple bank accounts registered. The first account listed is considered the primary account for refunds. So if you're adding a second account rather than replacing the first, be clear about which one you're designating as primary. The portal asks you this, so don't skip the question.

 

Documents Required for GST Amendment: Partner or Director Addition / Deletion

• Revised Partnership Deed or MCA Form DIR-12 (for director changes in companies) — this is the primary proof
• PAN card of the new partner / director
• Aadhaar card of the new partner / director
• Photograph of the new partner / director
• Proof of address of the new partner / director (bank statement, utility bill, passport, or voter ID — not older than 2 months)

 

“Changing a mobile number or email ID on GST registration is a non-core field amendment and requires no document upload. The process works through OTP verification—an OTP is sent to both the old and new contact details for authentication. However, access to the old number or email is required to complete this step.”

 

No documents here. Really.

 

Mobile number and email ID changes are purely OTP-verified. The portal sends OTPs to both the old and new contacts, and both must be entered to confirm the change. That's the security check; no scanned documents are involved.

 

Here's the actual problem most people face: they've lost access to the old mobile number. Maybe it's a phone that was stolen. Maybe the employee who registered is gone. In that case, you can't complete the OTP step on your own. You'll need to approach your jurisdictional GST office with a written request and identity proof the officer can do a manual override. (This process varies slightly by state, so check with your local GST Seva Kendra.)

 

The question I get asked most often is: 'Can I change both mobile and email at the same time?' Yes, the portal allows updating both in one amendment application. Save yourself a second visit to the portal.

 

Documents Required for GST Amendment: Proprietor Name Change

• Gazette notification (for government employees) OR court order OR marriage certificate — whichever is the legal basis for the name change
• PAN card in the new name (from the Income Tax Department)
• Aadhaar in the new name (from UIDAI)

The question people search most: 'what's the complete list?' Here it is, in one place.

 

 

These timelines are the statutory standard under Rule 19 of the CGST Rules, 2017. Individual GST offices sometimes process faster. Rarely slower, but it does happen around year-end or during major portal maintenance windows.

 

Common Mistakes When Uploading GST Amendment Documents

• Wrong format: The portal accepts PDF and JPEG only. Not PNG, not Word documents, not scanned TIFFs. Check before uploading.
• File too large: Each document is capped at 1 MB. A high-resolution phone scan can easily be 3–4 MB. Compress before uploading.
• Outdated utility bills: The portal flags utility bills older than 2 months. If yours is from 3 months ago, get the new one first.
• Name mismatch: The name on your supporting document must match your GST registration name exactly. Abbreviations, spellings, and punctuation all count.
• Missing consent letter: For rented premises, many applicants upload only the rent agreement and forget the NOC from the owner. Both are required.

 

 

It depends on what you're changing. For address changes, a recent utility bill is the most accepted document. For entity structure changes like adding a partner, the constitutional document (Partnership Deed or MCA filing) is the anchor. For personal identity changes, PAN is the primary document the GSTN system relies on.

 

 

Yes, the GSTN portal allows self-filing for all amendment types. Non-core amendments (bank account, email, mobile, and signatory) are straightforward enough for most taxpayers to handle independently. Core amendments, especially name changes or partner additions, are worth professional review because a wrong document submission costs you 15+ days in reprocessing.

 

 

Non-core amendments are auto-approved, usually effective within minutes to a few hours. Core amendments go to a GST officer who has 15 working days to approve, reject, or issue a clarification notice. If you receive Form GST REG-03 (a notice), you have 7 working days to respond before the application is rejected.

 

 

A rent agreement alone is generally not sufficient. The GSTN portal typically requires the rent agreement plus a utility bill of the landlord in their name plus a consent letter or NOC from the landlord. The utility bill confirms that the premises exist and are occupied as stated in the agreement.

 

 

The GST officer issues Form GST REG-05 (rejection order) or Form GST REG-03 (clarification notice). If it's a notice, you respond with corrected documents within 7 working days. If it's a rejection, you need to file a fresh application through Form GST REG-14 with correct documents. There's no penalty, but you lose the processing time, so getting documents right on the first attempt matters.

 

• Complete GST Registration Amendment Guide — Process, Forms, and Timeline
• How to Change Address in GST Registration (Step-by-Step)
• Adding or Removing a Partner in GST Registration