GST Registration Amendment Services — Core and Non-Core Changes Under Rule 19

GST Registration Amendment Services

A GST registration is not a set-and-forget document. Businesses evolve: they relocate their offices, rebrand under a new trade name, bring in new partners or directors, add bank accounts, open new branches, expand into new product lines, or change their authorised signatory. Every material change in the information recorded in the GST registration must be updated in the GSTIN record on the GST portal to keep the registration accurate and compliant. Operating with incorrect or outdated registration details exposes a business to show-cause notices, demand of tax, and penalties.

Under Rule 19 of the CGST Rules, 2017, read with Section 28 of the CGST Act, 2017, every registered taxpayer can apply to amend their registration details through Form GST REG-14 on the GST portal at gst.gov.in. The central concept governing GST amendments is the distinction between "core fields" and "non-core fields": non-core amendments take effect immediately (auto-approved by the system); core amendments require approval from the jurisdictional GST officer, who has up to 15 working days to act.

N D Savla & Associates, Chartered Accountants based in Mumbai, handles all categories of GST registration amendments: compiling the required documents, preparing and filing the amendment application in Form GST REG-14, tracking the officer approval status for core amendments, responding to any GST officer notices, and ensuring the updated registration certificate (Form GST REG-06) is downloaded and on record. For the initial GST registration process, see our GST Registration Guide.

Core vs Non-Core Amendments — The Fundamental Distinction

Rule 19(1) and Rule 19(2) of the CGST Rules, 2017 establish the core vs non-core framework that governs all GST registration amendment applications.

Non-Core Fields — Immediate Auto-Approval

Non-core fields are registration details that can be changed by the taxpayer without any GST officer review or approval. The change takes effect from the date of application. Non-core fields include:

• Trade name (the name by which the business is publicly known, if different from the legal name)
• Additional places of business within the same state
• Authorised signatory (add, change, or remove)
• Contact information: email address and mobile number
• Bank account details
• HSN (Harmonised System Nomenclature) codes for goods and SAC (Service Accounting Codes) for services
• Nature of business activity / business category

Core Fields — Officer Approval Required (Up to 15 Working Days)

Core fields are registration details whose change has a more fundamental impact on the taxpayer's business identity and jurisdictional assignment. The officer has 15 working days from the date of amendment application to approve or reject it. If the officer does not act within 15 working days, the amendment is deemed to be approved. Core fields include:

• Legal name of the business (e.g., company name change after ROC approval; LLP name change)
• Principal place of business address (the main registered business address of the taxpayer in the state)
• Addition or deletion of partners/directors/karta/managing committee members

Complete Guide to GST Registration Changes — What Can Be Amended, How, and Timeline

The Amendment Process — Form GST REG-14 on gst.gov.in

1. Log In to the GST Portal — Log in to the GST portal at gst.gov.in using your GSTIN, username, and password. Navigate to Services > Registration.
2. Navigate to Registration Amendment — Select "Amendment of Registration Core Fields" or "Amendment of Registration Non-Core Fields" based on which type of change you are making. The portal will display your current registration details for editing.
3. Make the Changes in Form GST REG-14 — Update the relevant fields with the new information. For core amendments, upload the required supporting documents (address proof, updated deeds, board resolutions, PAN/Aadhaar of new persons, etc.).
4. Verify and Submit — Verify the application using DSC (Digital Signature Certificate) for companies and LLPs, or EVC (Electronic Verification Code) via OTP for other entity types. Submit the application. For non-core amendments, the change takes effect immediately. For core amendments, you will receive an Application Reference Number (ARN) for tracking.
5. Receive Amended Registration Certificate (Form GST REG-06) — For core amendments, once the officer approves (or after 15 working days deemed approval), the updated Form GST REG-06 is available for download on the GST portal. Download and retain the updated certificate — update all invoices, letterheads, and business documents to reflect the changed details.

Common GST Registration Changes — Scenario-by-Scenario Guide

1. Changing the Principal Place of Business Address

One of the most common GST amendment requirements. The principal place of business address is a CORE field — officer approval required. Within the same state: file Amendment of Core Fields in Form GST REG-14 with new address proof. Officer has 15 working days. Once approved, update all invoices, letterheads, and business documents with the new address.

Moving to a different state: This is NOT an amendment — it requires a fresh GST registration in the new state (Form GST REG-01) AND cancellation of the old state's GST registration (Form GST REG-16). A GSTIN is state-specific and cannot be transferred across states.

Documents required for address change: New electricity bill / property tax receipt (not more than 2 months old) in the owner's name at the new address. If rented: rent agreement for the new premises + NOC from the new landlord + utility bill in the landlord's name.

2. Adding or Removing a Partner or Director

When a business structure changes through the addition of a new partner or appointment of a new director, the GST registration must be updated. This is a CORE amendment.

• Adding a partner to a firm: Upload updated partnership deed or supplementary deed showing the new partner's admission; new partner's PAN card; new partner's Aadhaar card. The GSTIN of the firm does not change.
• Removing a retiring partner: Upload retirement deed; updated partnership deed reflecting the reconstituted firm.
• Adding a director to a company: Upload Board resolution approving the appointment; new director's PAN card; new director's Aadhaar card; appointment letter or Form DIR-12 filed with MCA.
• Removing a director: Upload Board resolution confirming the resignation/removal; resignation letter or MCA filing. Ensure a valid authorised signatory for GST remains in place after the removal.

3. Changing the Authorised Signatory

The authorised signatory is the person responsible for signing GST returns and representing the business on the GST portal. Changing the authorised signatory is a NON-CORE amendment (immediate auto-approval). Documents required: PAN card and Aadhaar of the new authorised signatory; an authorisation letter or board resolution; the new signatory's consent letter in the prescribed format.

4. Adding an Additional Place of Business

When a business opens a new branch, godown, warehouse, or office in the same state, it must add this as an additional place of business in the GST registration. This is a NON-CORE amendment (immediate auto-approval). Documents required: address proof for the new location (electricity bill / rental agreement / NOC from landlord). If the new location is in a different state, a fresh GST registration is required in that state — it cannot be added as an additional place of business to an existing GSTIN from another state.

Frequently Asked Questions — GST Registration Amendments