Kotak Bank Mobile Number Registration and Update Guide
Kotak Bank Mobile Number Registration and Update Guide
To register or update your mobile number with Kotak Bank, you can use the bank’s net banking portal, the Kotak Mobile Banking app, or visit a branch with your KYC documents. Your mobile number must be registered to access SMS alerts, missed call banking, UPI, and OTP-based transactions.
How to Update Mobile Number via Net Banking
- Log in to netbanking.kotak.com with your credentials.
- Go to My Profile or Service Requests.
- Select Update Contact Details or Change Mobile Number.
- Enter your new mobile number.
- Verify with an OTP sent to your current registered number (if accessible).
- Confirm the change. The update is usually processed within a few hours.
How to Update via the Kotak Mobile Banking App
- Open the Kotak Mobile Banking app and log in.
- Tap on Profile or the menu icon.
- Select Update Mobile Number.
- Enter the new number and verify via OTP.
- Confirm and submit.
How to Register or Update at a Branch
If you have lost access to your registered number or cannot receive OTPs, visit your nearest Kotak Bank branch with:
- Original photo ID proof (Aadhaar, PAN, passport or driving licence).
- Your bank passbook or welcome letter for account verification.
- A filled mobile number change request form (available at the branch).
The branch will update the number after verification, typically within one working day.
Why Your Registered Mobile Number Matters
- All OTPs for net banking, UPI, and debit card transactions are sent to this number.
- Balance alerts and SMS banking services rely on this number.
- Missed call banking (18002740110) only works from the registered number.
FAQ
Can I update my Kotak mobile number online without visiting a branch?
Yes, if you still have access to your old registered number for OTP verification, you can update it via net banking or the app. Without OTP access, a branch visit is required.
How long does the mobile number update take?
Online updates via net banking or the app are usually processed within a few hours. Branch requests may take one working day.
Will my UPI be affected after a mobile number change?
Yes. After changing your registered number, you will need to re-register for UPI in the Kotak Mobile Banking app using the new number to continue making UPI payments.
Key Takeaways
- Update your Kotak registered mobile number via net banking, the app, or at a branch.
- OTP-based update works only if you have access to your current registered number.
- Branch visit with KYC documents is needed if you have lost access to the old number.
- After updating, re-register UPI to avoid payment disruptions.




