Process to Update Mobile Number on GST Portal 2026

Know the Importance of mobile number updation

To Update Mobile Number on GST Portal is important for maintaining your GST compliance, as it delivers OTPs, updates, and formal notices to your registered mobile phone number. If the number of your phone changes, you have to change it immediately to prevent missing important communications. This guide will show you how to update your mobile number on the GST Portal each step with Ebizfiling in 2026.

Eligibility to Update Mobile Number on GST Portal

Only someone who has been given permission can change the registration information in the GST account. That signifies in real life:

• The main authorized signatory (promoter, partner, or director) or any other authorized signatory whose login information you use; or
• Someone has the right role on the GST system, like someone who can make changes to registrations.

You can add a new authorized signatory’s cell number by first adding that individual as an authorized signatory and then updating their con.

Process to Update Mobile Number on GST Portal

You need to file an Amendment of Registration 2025 (Non-Core Fields) to update your mobile number. The GST system processes this amendment online after proper verification.

In most cases, the update reflects within 15 minutes after submission.

While connected into your gst.gov.in account to Update mobile number on GST Portal, take the following actions:

Understand the complete process to update mobile number on GST portal with proper verification steps.

1. Enter your login information to access the GST portal.

2. Select Services then Registration, after that Amendment of Registration (Non-Core Fields) from the top menu.

3. The amendment form has several tabs. The number you’re changing will be determined by:

• If it’s the Promoter, Partner, or Primary Authorized Signatory, click there to make changes next to the relevant person on the Promoter/Partners page.
• If it’s another Authorized Signatory, go to the Authorized Signatory tab and choose Edit that signatory or Add New (if the person isn’t already on the list).

4. If required, provide your new email and phone number. Click “Save.”

5.Click the Verify tab after entering new data. Pick from E-Sign, DSC (Digital Signature Certificate), and EVC (OTP) as your verification method. Once you’ve reviewed the declaration, click “Submit”. (If you utilize EVC/E-Sign, you will get an OTP via email or mobile device throughout the verification procedure.)

6. Make a note of the confirmation’s ARN (Acknowledgement Reference Number) or snap a screenshot of it. Save it for future reference in case something goes wrong.

7. Wait around 15 minutes to confirm the change, then log out and back in under Services, Registration , Search Taxpayer or My Profile / View Registration. According to user manuals and government guidelines, you should wait a few minutes for the system to refresh.

If you are unable to modify the existing authorized signatory, then

Due to access limitations, companies may be difficult to update the existing authorised signatures. One of our clients faced this issue when the prior signature was no longer available.

Ebizfiling helped by activating a new authorized signatory on the GST Portal, entering the necessary information, and finishing the verification procedure. Following submission, the new cellphone number was successfully changed, offering efficient GST communication.

Common problems and fixes

1. OTP not received:

Service disruptions, wrong numbers, and mobile network latency can all impede OTP delivery. Verify the number you entered twice, try the OTP again (it will be delivered again), and if it is still not received, try another verification technique to update mobile number on GST Portal, such as a Digital Signature Certificate. Check the phone’s Do Not Disturb settings as well.

2. Not permitted to amend:

In order to submit an amendment, you need to be logged in as an authorized signatory or possess the appropriate position. Ask the primary authorised signatory to add you as an authorised signatory or make the change if you don’t have permission.

3. Change not visible:

Wait about fifteen minutes and refresh to see the change. Note the ARN and get in touch with the GST helpdesk or grievance portal if it hasn’t appeared yet. For technological issues, the GST system also offers a complaints/issue lodging facility.

4. Mobile is linked to Aadhaar / other services:

Some authentication flows (such as specialized e-sign flows) may demand that the mobile device be operational and capable of receiving OTPs. The mobile device is linked to Aadhaar and other services. If you wish to use Aadhaar-based e-KYC and your Aadhaar mobile number changes, be sure you update it through UIDAI protocols. Keep in mind that Aadhaar laws are always changing, so check with UIDAI for the most recent regulations.

Best Practices and tips on how to update mobile no. on GST portal

• GST uses your mobile number for legal and security communications, so make sure you (or your authorized signatory) will keep it for the long run.
• If one authorized signatory is not available, have a backup in the profile so that authentication and alerts can continue to work.
• Test the login and OTP processes after updating the phone to make sure everything functions (try a profile view or small action that causes an OTP).
• Until the modification is reflected and you receive any email acknowledgements, keep the ARN and submission screenshots.
• If you also need to verify import-related records, you can check the process to search bill of details on GST portal for accurate transaction tracking.

Update Mobile Number on GST Portal with Ebizfiling

At Ebizfiling, the process of Update Mobile Number on GST Portal becomes simple, accurate, and hassle-free.

• Our team files your GST registration modification under non-core fields without errors.
• The procedure involves updating or adding authorised signatory information as needed.
• DSC, E-Sign, and EVC verification are all supported by appropriate advice.
• OTP difficulties and ARN tracking are managed well.
• Continuous follow-up ensures that your update is finished effectively.

Get expert help from Ebizfiling to complete your GST mobile number update without delays.

Conclusion

Keeping Update mobile number on GST portal ensures that you receive essential updates, OTPs, and notices no interruption. You can successfully perform the update by following the necessary modification procedure and verification processes. If you face technical difficulties, seeking expert assistance might help you prevent delays.

FAQs to Update Mobile Number on GST Portal