If I change the phone number I have on file with the bank, will I be charged a fee?

Smart Money • September 5, 2026, 7:15 a.m.

Reader Linh Nguyen (Quang Ninh) asks: “I want to change the phone number I registered with the bank to a new one. Do I need to go to the bank to make the change, and is there a fee for changing my phone number?”

Đổi số điện thoại đã đăng ký với ngân hàng, tôi có mất phí không?

Answer:

Banking Times would like to thank you for your question. Here is our advice:

The phone number registered with the bank is typically used to receive notifications, verify transactions, or access certain online banking services. Therefore, if you no longer use your old phone number, you should update your new number with the bank to avoid service interruptions and ensure the security of your account.

How do I change my phone number?

The process depends on each bank’s policies and systems.

Customers can visit a branch or service center in person and present valid identification for verification and to update their information. Some banks also allow this to be done via Internet Banking, Mobile Banking, or other channels provided by the bank.

If your old phone number is lost or no longer in use, you should contact the bank directly for guidance. This is because, for some online update methods, customers may need to verify their identity using the previously registered phone number.

Is there a fee for changing your phone number?

There is no standard fee that applies to all banks.

Currently, most banks do not charge a fee when customers change their registered phone number. However, policies may vary depending on the bank and the associated services. Therefore, before proceeding, you should check the fee schedule or ask your bank for specific details.

It’s also important to distinguish between the fee for updating your phone number and the fees for related services. For example, if you sign up for SMS Banking with your new phone number, this service may have its own fee according to the bank’s fee schedule.

What should you keep in mind after changing your phone number?

After updating your information, you should double-check any services linked to your old phone number—such as SMS Banking, Mobile Banking, Internet Banking, or your method for receiving verification codes—to ensure the new number has been fully updated.

If you no longer have access to your old phone number, it’s even more important to update it as soon as possible. Do not provide OTP codes, passwords, or login information to anyone claiming to be a bank employee, and only make changes through official channels.

In summary, changing the phone number registered with the bank is usually free of charge, but customers should check the policies of their bank. More importantly, after changing the number, you should verify all related services to ensure that notifications and transaction verification are not interrupted.

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