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To amend GST registration details, sign in to the GST Portal, open Services > Registration, and select either Amendment of Registration Core Fields or Amendment of Registration Non-Core Fields. Edit the relevant tab, complete the verification declaration, choose the authorised signatory, enter the place, and submit with Digital Signature Certificate (DSC) or Electronic Verification Code (EVC), as the portal permits.
The route matters. A successfully filed non-core amendment is described by the GST Portal as automatically updated, while a core amendment must be approved by a tax official. Save the acknowledgement reference number (ARN), then monitor the dashboard and your registered email and mobile number for the result.
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What a GST registration amendment does
An amendment updates information already recorded against an existing GST registration. It is different from applying for a new registration and does not, by itself, create a new GSTIN. The portal divides amendment applications into two menu options: core fields and non-core fields.
The GST Portal materials reviewed do not provide a complete, permanent field-by-field list that should be relied on for every version of the form. Instead, use the current amendment screen to identify the tab and route assigned to the detail you need to change. The portal’s non-core manual gives authorised-signatory information and stakeholder information such as a promoter, partner or karta as examples of non-core information. It describes other information as core, but that broad description should not replace the classification shown in the current portal form.
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Core and non-core routes at a glance
| Route | Portal menu | Review path | What happens after filing | Examples identified in GST Portal guidance |
|---|---|---|---|---|
| Non-core | Services > Registration > Amendment of Registration Non-Core Fields | No tax-official processing is described for a successful filing | The portal describes the amendment as automatically approved or updated; an ARN acknowledgement is sent to the registered email and mobile number | Authorised-signatory information and stakeholder details such as promoter, partner or karta |
| Core | Services > Registration > Amendment of Registration Core Fields | Tax-official approval is required | SMS and email are sent when the application is approved or rejected; the order and amended certificate can then be retrieved | The portal materials reviewed do not provide an exhaustive field list |
Do not infer that every change involving a person, address, bank account or business attribute follows the same route. Open the current form, locate the relevant tab, and follow the classification and validation instructions displayed for that application.
Before you begin
Prepare the information and authentication method you are likely to need before opening the application. This reduces the risk of abandoning a partially completed form or discovering at submission that a required verification cannot be completed.
- Have the GST Portal login credentials for the registered taxpayer available.
- Know exactly which registration detail is changing and whether the portal places it in a core or non-core tab.
- Keep the updated information in the format requested by the relevant tab.
- For a bank-account amendment, have the account number, account type, IFSC, supporting document, amendment date and reason ready.
- Ensure the authorised signatory can complete the required DSC or EVC authentication.
- For contact-detail changes, keep access to the mobile number and email address that the screen asks you to verify.
- Use the current portal form rather than relying on an old screenshot or an earlier classification of fields.
The official materials do not establish a current statutory deadline for filing an amendment after a change occurs. Do not insert a number from an old article into your compliance calendar without checking the current CGST law, rules and GST Portal instructions.
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- Sign in to the GST Portal.
- Open Services > Registration.
- Select Amendment of Registration Core Fields when the detail is shown in a core-field application, or select Amendment of Registration Non-Core Fields when it is shown in the non-core application.
- Review the tabs presented by the application and open the tab containing the information to be changed.
- Edit only the details that are accurate and supported by your records. If the portal displays a field-specific instruction, treat that instruction as controlling for the submission.
- Use the application’s continuation or next control to move to verification after completing the relevant tab.
The welcome-kit procedure describes the same broad sequence for both routes: choose the appropriate amendment option, edit the relevant tab, continue to verification, select the authorised signatory, enter the place and authenticate digitally. The difference is the review path that follows submission, not the need to complete the declaration and authentication.
How to file a non-core amendment
Complete the non-core form
Choose Services > Registration > Amendment of Registration Non-Core Fields. Open the tab that contains the detail you want to change and enter the updated information. Check spelling, identification numbers, contact details and dates before moving to verification. A field that appears simple may trigger an additional validation screen, document request or OTP step.
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The GST Portal’s non-core manual identifies authorised-signatory information and stakeholder details such as promoter, partner or karta as examples. It also describes a bank-detail process within the non-core amendment flow. Because the manual does not provide a complete field list for every portal version, let the live application determine whether your particular change belongs here.
Changing authorised-signatory contact information
For an authorised-signatory contact change, the manual describes editing the authorised-signatory record and verifying the updated contact details with an OTP. The exact OTP sequence can vary when the individual is also recorded as a promoter or partner. Follow the screen-specific instructions rather than assuming that one OTP sequence applies to every signatory record.
Before submitting, confirm that the person whose details are being amended can receive the OTP requested by the form. If the portal presents separate verification for email and mobile details, complete each one that it requires. A successful edit that has not completed the displayed verification should not be treated as a submitted amendment.
Adding or changing bank-account details
The non-core manual describes a bank-detail flow requiring the following information and actions:
- Account number.
- Account type.
- IFSC.
- Account validation through the portal.
- At least one supporting document for this bank-detail process.
- Date of amendment.
- Reason for the amendment.
Enter the account details exactly as held by the bank and upload the supporting document in the format and size accepted by the current screen. Complete account validation before proceeding if the form requires it. Keep a copy of the uploaded document and the entered amendment date in your records.
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The manual warns that failing to add bank details within the applicable period can produce login warnings and may lead the proper officer to initiate suo moto cancellation proceedings. The source refers to a period under Rule 10A but does not establish the exact current number in the material reviewed. Do not rely on an unverified deadline; check the current rule and portal notice for the applicable requirement.
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Submit and retain the ARN
After editing, continue to verification, select the authorised signatory, enter the place and submit using DSC or EVC as applicable. The GST Portal describes a successfully filed non-core amendment as automatically approved or updated without tax-official processing. Its manual says the ARN acknowledgement is sent to the registered email and mobile number and is expected within 15 minutes. That 15-minute figure is an acknowledgement expectation, not a promise that every validation, contact update or unrelated core application will finish in that time.
How to file a core amendment
Use the core-field application
From Services > Registration, choose Amendment of Registration Core Fields. Open the tab containing the change, enter the revised information and proceed through the portal’s verification screens. The welcome kit instructs taxpayers to select the authorised signatory, enter the place and authenticate with DSC or EVC as applicable.
Review every value before final submission. A core application is not treated like an automatic non-core update: GST Portal troubleshooting guidance states that a tax official must approve it. Filing creates an application for decision, not an immediate change to the registration certificate.
Wait for the decision and identify the order
The portal’s guidance says that SMS and email are sent when a core amendment is approved or rejected. After the authority decides the application, sign in and inspect the dashboard for the application outcome. When an order is available, view or download the REG-15 order from the dashboard.
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If the application is approved, download the latest amended registration certificate through Services > User Services > View/Download Certificates. Keep both the REG-15 order and the amended certificate with the amendment record. If the application is rejected, retain the rejection communication and read the reason before deciding whether a corrected application or another response is appropriate.
Verification, declaration and digital authentication
Both amendment routes require a verification stage. The portal procedure calls for completing the verification declaration, selecting the authorised signatory, entering the place and authenticating digitally. The exact controls shown can vary by application and by whether DSC or EVC is available for that taxpayer.
- Read the declaration displayed by the application and confirm that the entered information is correct.
- Select the authorised signatory who is permitted to submit the amendment.
- Enter the place requested by the verification form.
- Choose the authentication method offered for the application: DSC or EVC, as applicable.
- Complete the on-screen authentication and wait for the submission confirmation before closing the browser.
- Record the ARN and submission timestamp shown by the portal.
Do not treat a saved draft, an OTP request or a page that returns to the dashboard as proof of filing. The evidence of submission is the portal confirmation and ARN, followed by the acknowledgement delivered to the registered contact channels.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What to do after submitting
For a non-core application
Check the registered email inbox, mobile messages and portal dashboard for the ARN acknowledgement. The GST Portal manual gives an expectation of 15 minutes for the acknowledgement after successful submission. If it does not appear, first confirm that the portal actually displayed a successful submission and that the registered contact details can receive messages. Keep the ARN even if the portal has already updated the displayed information.
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For a core application
Monitor the registered email and mobile number for an approval or rejection message. The core process requires tax-official approval, so an ARN alone does not establish that the amended certificate is available. Once a decision is recorded, retrieve the REG-15 order from the dashboard and, for an approval, download the latest certificate through Services > User Services > View/Download Certificates.
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Update internal records
Store the submitted form details, ARN, supporting documents, messages, order and certificate together. Record which registration detail changed and the date shown in the application. This creates a traceable file for future returns, invoices, bank records and correspondence without changing the portal’s official review process.
Troubleshooting common problems
The field is not available in the route you opened
Return to Services > Registration and open the other amendment option. The portal’s current form, not a third-party checklist, determines whether a field is presented as core or non-core. If neither route exposes the detail, read the portal’s current help text and consider obtaining professional advice before submitting an unrelated change.
An OTP cannot be completed
Check which person the form is asking to verify and whether that person is also recorded as a promoter or partner. The non-core manual expressly notes that the OTP steps can differ in that situation. Follow the branch shown by the portal, confirm access to the requested contact channel and avoid substituting a different person’s OTP.
Bank-account validation or document upload fails
- Recheck the account number, account type and IFSC against the bank record.
- Use the document type and file constraints displayed by the upload control.
- Confirm that at least one supporting document has been attached for the bank-detail process described by the manual.
- Complete any account-validation step before trying to submit again.
- Retain the error message and a copy of the attempted document if the problem continues.
No ARN acknowledgement arrives
For a non-core filing, the manual’s 15-minute statement concerns acknowledgement delivery after successful submission. First verify that the final submission completed and that the ARN was displayed or generated. Check the registered email’s spam or filtered folders and the registered mobile number. Do not file a duplicate amendment solely because an email is delayed; use the dashboard and ARN status to determine whether the first application exists.
A core amendment is rejected
Open the rejection communication and the application record, note the reason given by the authority and compare it with the information and documents submitted. The portal guidance confirms that a core amendment can be approved or rejected and that the REG-15 order is available from the dashboard. Correct the underlying issue before making another submission, and seek qualified GST assistance if the reason involves a legal interpretation or a disputed registration fact.
Deadlines and processing times: what is established
The reviewed GST Portal material establishes an acknowledgement expectation of 15 minutes for a successfully submitted non-core amendment. It does not establish a current statutory deadline for filing an amendment after a change, and it does not provide a current processing-time promise for a core amendment. Therefore, do not represent 15 minutes as the time for a core decision, certificate issuance or every type of non-core validation.
Where a bank-detail requirement refers to an applicable period under Rule 10A, verify the current rule and portal notice before relying on a number. Rules, portal menus, OTP screens and document requirements can change, so a dated article or old screenshot may not reflect the form you see at submission.
Final submission checklist
- Correct menu selected: core or non-core according to the current portal form.
- Relevant tab opened and amended information checked character by character.
- Any field-specific validation completed.
- For authorised-signatory contact changes, the requested OTP verification completed for the correct person.
- For bank details, account number, account type, IFSC, validation, supporting document, amendment date and reason completed.
- Verification declaration accepted.
- Authorised signatory selected.
- Place entered.
- DSC or EVC authentication completed successfully.
- ARN recorded and confirmation retained.
- For non-core filings, acknowledgement checked through the registered email, mobile number and dashboard.
- For core filings, decision monitored, REG-15 order downloaded when available and the amended certificate downloaded after approval.
When professional help is sensible
A straightforward data correction can usually be completed by following the current GST Portal form. Consider consulting a qualified GST practitioner when the change affects several registration tabs, ownership or constitution information, a disputed address or business activity, a rejected core application, or a bank-detail requirement that could affect registration status. Professional help is optional; the portal does not require a software subscription for the amendment steps described here.
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