How to Change Email ID on GST Portal? Complete 2026 Guide

Key Takeaways

• Change the GST email ID and mobile number through Services → Registration → Amendment of Registration Non-Core Fields.
• Update the details under the Authorized Signatory tab, or the applicable tab for the business structure.
• Verify the new email ID and mobile number using the OTPs sent to both.
• Submit the amendment using DSC or EVC, as applicable.
• Non-core amendments generally do not require tax officer approval and are processed automatically.
• Keeping contact details current helps ensure timely receipt of GST OTPs, reminders, and official notices.

Why Update Your E-Mail ID on GST Portal?

Keeping the registered email ID updated ensures that you.

• Receive return filing reminders and GST notifications without delay.
• Get OTPs and verification emails required for GST portal services.
• Stay informed about registration amendments, notices, and other updates.
• Reduce the risk of missing compliance deadlines and related penalties.
• Maintain smooth communication with the GST department throughout the registration’s lifecycle.

Step-by-Step Process to Change Email ID on GST Portal

There are two ways to update the email ID and mobile number on the GST portal, depending on the business structure. Both use a Non-Core field amendment, but proprietors can update their details directly, while companies and LLPs may need to add a new authorized signatory first.

The steps for each method are below:

Method 1: For a Proprietor or Single Authorized Signatory

A proprietor or sole authorized signatory can update the contact details directly by following these steps:

1. Log in: Sign in to the GST portal and go to Services → Registration → Amendment of Registration Non-Core Fields.
2. Open the relevant tab: Go to Promoter/Partners and select Edit for the applicable person.
3. Update the details: Enter the new email ID and mobile number.
4. Verify the OTPs: Enter the separate OTPs sent to the new email ID and mobile number.
5. Submit the amendment: Open the Verification tab and submit using a Digital Signature Certificate (DSC) or Electronic Verification Code (EVC), as applicable.

The amendment is generally processed automatically because email and mobile details are non-core fields.

Method 2: For a Company or LLP Changing the Primary Authorized Signatory

If a company or LLP needs to replace its primary authorized signatory, the portal may require the new signatory to be added first:

Step 1: Add the New Authorized Signatory

1. Go to Services → Registration → Amendment of Registration Non-Core Fields.
2. Open the Authorized Signatory tab and select Add New.
3. Enter the new signatory’s details, including the new email ID and mobile number.
4. Verify the required details and submit the amendment using DSC or EVC.

Step 2: Make the New Signatory Primary

1. After the first amendment is processed, return to the Authorized Signatory tab.
2. Select the new signatory as the Primary Authorized Signatory and remove the primary designation from the existing signatory.
3. Complete the required verification and submit the amendment.

After the change takes effect, GST communications will be sent to the new registered contact details.

Common Issues While Changing Email ID on the GST Portal and How to Resolve Them

Updating GST contact details is usually quick, but a few issues can arise:

Issue	Solution
OTP not received	Check the spam folder, confirm both new details are active, and use Resend OTP.
Cannot edit the primary authorized signatory	Add a new authorized signatory with the updated details and designate them as primary, where applicable.
DSC or EVC error	Check that the DSC is valid and registered, or that the EVC-linked mobile number is active.
Updated details are not showing	Log out and sign in again. If the issue continues, check the status under Services → Track Application Status.

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