Why Do You Need a Union Bank Customer ID?
Your Union Bank Customer ID is allocated to you just after you complete your KYC and open your account successfully. It is a unique 8–11 digit number assigned to every customer. It links all your Union Bank accounts (savings, current, loans, cards) under your KYC Profile.
You need your customer ID whenever you do –
- During registration for the Vyom mobile banking app
- When signing in to Internet Banking
- While contacting Customer Care
- For loan applications or updating KYC
- For viewing/downloading bank statements
- accessing the digital passbook app and other Union apps.
As of 31st March 2025, the Union Bank serves more than 15.3 crore customers all over the country. To manage such a massive network efficiently, they used digital banking and a customer ID for each user to access all products easily.
1. Know Your Customer ID via Union Bank Online (No Login Needed)
> For Savings and Current Accounts Only
This is the official method offered by Union Bank to retrieve your User ID (Also known as Customer ID).
If you’ve opened a savings or current account with Union Bank of India and don’t remember your Customer ID, there’s a quick way to find it online, without logging into anything.
All you need is your account number and mobile number. Here are the steps to follow –
Step 1 – Head to the official Union Bank net banking site

Go to www.unionbankonline.co.in on your browser (like Google Chrome or Firefox). This is the bank’s official internet banking portal, and on the homepage, look below the login area. You’ll find a link that says “Know Your User ID”. Tap on that.
Step 2 – Enter your account details

Type in your account number (savings/current only), the mobile number registered with your bank account and the Captcha code to verify.
Step 3 – Verify with OTP

Now, on your registered mobile number, you will receive a 6-digit one-time code from the bank. Enter it and tap on continue.
Note: If you are not receiving OTP, please visit your branch and update your mobile number with the bank.
Step 4 – View your Customer ID

Once verified, the screen will show your User ID and Organisation ID. Your User ID is your Customer ID. Write it down safely for future use.
> For Union Bank Credit Card Holders

If you only hold a Union Bank Credit Card, the process is a bit different, but quite simple.
Steps to Follow:
- Visit the Union Bank Credit Card Portal.
- Enter your Full Credit Card Number and Registered Mobile Number.
- Solve the CAPTCHA.
- After OTP verification, your Customer ID will be sent via SMS and email.
Alternate – Which Online Tools Help You Retrieve It Quickly?
1. Re-KYC Portal (No Login Required)
- Go to the official site: unionbankofindia.co.in and find the Re-KYC Option.
- Click on “Re-KYC” (you’ll find it under Quick Links and the menu)
- Choose any one option:
- Customer ID
- PAN Number
- Account Number
- Enter the CAPTCHA code and hit Submit
- You’ll receive an OTP on your registered mobile
- Enter the OTP and submit
- Your Customer ID will appear instantly on the screen.
2. Union Bank Monthly Statement (Via Email)

Union Bank also sends monthly e-statements to your email.
How to open and view:
- Open the email from Union Bank.
- Download the attached PDF statement.
- Enter the password format:
- First four UPPERCASE letters of your registered name + your birth date and month in
DDMM
. - Example: Naman, DOB: 15/08/2000 → Password:
NAMA1508
- First four UPPERCASE letters of your registered name + your birth date and month in
- Inside the PDF, your Customer ID is printed in the header.
3. Union Bank WhatsApp Banking (PDF with ID)
- Send “Hi” to 9666606060 (Union Bank’s official WhatsApp number).
- Select language and verify your number via OTP.
- Set a 4-digit MPIN.
- Go to Account Services → Account Statement.
- Choose the month and request a statement on WhatsApp directly.
- You will receive a PDF on WhatsApp.
- Open it using the same password format (name + DDMM).
- View your Customer ID in the header.
When to Use the Vyom Mobile Banking App
This is another simple and good way to find your CIF ID. If you are already using the Vyom Mobile banking app by Union Bank, follow the steps –
- First, open the Vyom app and log in using a 4-digit MPIN or fingerprint.
- If you are a first-time user, register using your debit card details and Aadhaar number, or by visiting a branch to get a branch token to set a 4-digit mpin.
- On the home screen of the app, simply tap on the “mPassbook” option under Account overview.
- Choose your Account and the month.
- Tap on Download Statement (PDF).
- Use the PDF password:
- First 4 letters of your bank-registered name in UPPERCASE.
- Followed by DDMM of your birthday.
- Example: Priya Singh, DOB 20/08/1998 → Password:
PRIY2008
- Open the PDF. Your Customer ID or CIF is printed at the top.
Where to Check Customer ID on Bank-Issued Documents
1. First, check your typical documents (Arrived just after opening the account)
- Passbook (first page, below name)
- Welcome Letter (from account opening kit)
- Cheque Book (first or summary page)
- Credit Card Welcome Kit
- Debit card kit
- Congratulations notification via SMS or Email
2. Requested documents
- Physical Statements: If you have any, your Customer ID is usually printed at the top. If not, visit the branch and ask for a duplicate copy.
- KYC Documents: Usually available in digital and physical versions.
Get Your Customer ID in Emergency (No Docs or Linked phone number)
If your mobile number is not linked, and you’ve lost access to documents or login info, follow these recovery options:
1. No Registered Mobile + No Documents
- Visit your home branch directly.
- Take all your available documents, such as Aadhaar, PAN, Driving License, and Passport.
- Explain the situation and fill out an identity verification form.
- Once verified, bank staff will retrieve and share your Customer ID.
2. Temporary Email Option
- Email customercare@unionbankofindia.bank from a working registered email ID.
- Mention: Full name, DOB, last 3 transactions (if remembered), nearest branch, and old address.
- The bank may request scanned ID proof and reply after verification.
Tips to Avoid Losing Your Customer ID Again
- Save it in password managers or banking notebooks.
- Make a digital backup on the cloud (encrypted).
- Register for email and SMS banking alerts.
- Link Aadhaar and PAN for easier account verification.
FAQs
Can I find my Union Bank Customer ID via SMS?
Currently, Union Bank does not offer Customer ID retrieval via SMS — only OTP-based methods or WhatsApp. But you can get only a Union Bank credit card-linked customer ID.
Is my login ID for the Vyom app the same as my Customer ID?
Yes, as per the official website, your user ID is your customer ID, and it is required for all internet banking processes in Union Bank.

This article was written by Nanne Parmar, a fintech expert with a DCA degree and a commerce background, with 6+ years of experience in finance, fintech, and banking. Nanne has worked extensively in AI tools for banking, financial calculators, and fintech products. As the founder of EaseMoney, he focuses on making complex financial concepts simple for Indian users.