Step by Step guide to change E-mail ID and/or Mobile Number on GSTN Portal

How do I change Email ID and Mobile Number of Primary Authorised Signatories provided at the time of enrolment or obtaining new registration?

Tax Payers have registered in GST Regime either as migrated category based on provisional ID provided based on existing registration (VAT/Service Tax/ Excise, etc) or have obtained fresh registration post commencement of GST.

In many cases they have obtained the assistance of tax professional or have registered on their own. While obtaining registration number or enrolling they provided email id or mobile number which may require to be changed now since they have changed the professional, employees have left the organisation whose details were provided.

 It becomes a cumbersome process to change the mobile number or email id of primary authorized signatory on GSTN Portal.

We are providing step by step process to change mobile number or email id of primary authorized signatory –

Step-1: Login to GST portal ( with your user id and password.

Step-2: Click on the registration bar and select the non-core amendment.

 Step-3: Click on the authorized signatory tab.

Step-4: Add new authorized signatory whose email and mobile number you wish to add (New).

Step-5: Go to verification tab and submit the application.

Step-6: After submission of application please wait for some time (15 minutes).

Step-7: Login again with user id and password.

Step-8: Go to the authorized signatory tab – de-select the primary authorized signatory check box.

Step-9: Select the newly added authorized signatory as primary authorized signatory

(Important: Older mobile and email id will be prefetched by the system. Please ensure to change the mobile and email id to which you want to add.)

Step-10: Go to the verification tab and submit,

[Note: For Company/LLP DSC sign the application with DSC and for individuals please use OTP]

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  1. Ramesh B Bhatia says:

    I want to change Email address – presently it has CA Email. I want to add our Email to receive notices etc.
    In case of single Email then please remove CA Email address and insert our Email.
    GST No.08AKUPB8838P1Z4

  2. Shivam Garg says:

    The solution u have provided does not pictured with full info.
    There is not just mobile no. and email-id which u cant fill same, u can cannot fill same PAN also. So if u have authorized signatory then of whom PAN u will enter.
    Solution not viable

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September 2021