Find Your Union Bank Customer ID: A Simple Guide

One of the stories of my client and friend, Meet Sonu, from Rewari, a small town, who recently opened a savings account with the Union Bank of India. Excited to try mobile banking for the first time, he downloaded the Vyom app, ready to check his balance and make his first online payment.

But right at the registration screen, Sonu got stuck on “Enter your Customer ID?”

He paused and asked – “What is this Customer ID? Where do I even find it?”

If you have ever faced a similar issue, don’t worry — you’re not alone.

This guide is for people just like Sonu (and maybe you).

Hi, I’m Nanne Parmar, a finance author and editor. I can relate to your confusion. That’s why I have created this super simple guide to show you how to find your Union Bank Customer ID — even if you don’t want to log in anywhere or visit a bank.

Just scroll down and explore every option step-by-step. So, without wasting time, let’s begin the guide –

What is the Union Bank Customer ID?

Union Bank of India is one of India’s largest government banks. It became the 5th largest public sector bank in India after its merger with Andhra Bank and Corporation Bank.

According to the Data from the Union Bank Wikipedia Page, the bank operates assets worth ₹14.59 lakh crore (around $170 billion) and serves more than 15.3 crore customers (153 million+) as of 31st March 2025.

To manage such a massive network efficiently and each customer easily, Union Bank assigns a Customer ID — also known as a CIF (Customer Information File) number — to each customer.

How is it different from your account number?

• Your Account Number is tied to a single bank account.
• Your Customer ID is linked to you, not just one account.
• You may have multiple accounts, cards, or services, but all under one Customer ID.
• It’s usually 8 to 11 digits long, depending on the bank’s internal system.
• This Customer ID also acts as your login ID for Internet and Mobile Banking.

Where is the CIF Number required in Union Bank?

• 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

Now you understand how important it can be. So let’s dive into all the ways to retrieve it.

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:

1. Visit the Union Bank Credit Card Portal.
2. Enter your Full Credit Card Number and Registered Mobile Number.
3. Solve the CAPTCHA.
4. After OTP verification, your Customer ID will be sent via SMS and email.

2. Union Bank Mobile Banking App (Vyom)

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 –

1. First, open the Vyom app and log in using a 4-digit MPIN or fingerprint.
2. 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.
3. On the home screen of the app, simply tap on the “mPassbook” option under Account overview.
4. Choose your Account and the month.
5. Tap on Download Statement (PDF).
6. 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
7. Open the PDF. Your Customer ID or CIF is printed at the top.

3. Find Your Customer ID via Re-KYC Portal

1. Go to the official site: unionbankofindia.co.in and find the Re-KYC Option.
2. Click on “Re-KYC” (you’ll find it under Quick Links and the menu)
3. Choose any one option:
   • Customer ID
   • PAN Number
   • Account Number
4. Enter the CAPTCHA code and hit Submit
5. You’ll receive an OTP on your registered mobile
6. Enter the OTP and submit
7. Your Customer ID will appear instantly on the screen

No login, no branch visit — just quick and easy!

4. Check Documents: Passbook, Welcome Letter & More

If you are not a techy person and struggling to go online, don’t worry, here are a few offline options, such as just checking your bank-received documents and letters.

• Welcome Letter: Comes with the welcome kit if you opened your account online or via India Post. CIF is printed on the letter.
• Passbook: The First page of your passbook shows your Cust ID just under your name and account number.
• Cheque Book: Many cheque books include the CIF on the first page.
• Credit Card Welcome Kit: Look for printed papers with Customer ID details under the credit limit section.
• Old Physical Statements: If you have any, your Customer ID is usually printed at the top.

5. Union Bank Monthly Statement (Via Email)

Union Bank also sends monthly e-statements to your email.

How to open and view:

1. Open the email from Union Bank.
2. Download the attached PDF statement.
3. 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
4. Inside the PDF, your Customer ID is printed in the header.

Alternatively, you can get a statement via Union Bank’s WhatsApp banking –

1. Send “Hi” to 9666606060 (Union Bank’s official WhatsApp number).
2. Select language and verify your number via OTP.
3. Set a 4-digit MPIN.
4. Go to Account Services → Account Statement.
5. Choose the month and request a statement on WhatsApp directly.
6. You will receive a PDF on WhatsApp.
7. Open it using the same password format (name + DDMM).
8. View your Customer ID in the header.

Contact Union Bank Customer Care

If none of the above methods work, just call the bank. They’ll help you after verifying your identity.

Toll-Free Union Bank Helpline Numbers:

• 1800 208 2244
• 1800 425 1515
• 1800 425 3555
• 1800 22 22 44
• 1800 2333

Note: Always verify numbers with the official website before making calls.

Also, you can simply send an Email: customercare@unionbankofindia.bank

Visit Your Nearest Union Bank Branch

Last but always reliable — your local branch. Simply, take your ID proof and visit the branch and ask for a new passbook with your CIF number.

FAQs

I hope you like the article and understand how to retrieve it easily. Please bookmark our site and share it with your friends or family. Also, explore more financial tools, guides, and smart money tips at EaseMoney.

Explore More:

Find Every Bank Customer ID Recovery Guide – Full List

Disclaimer: This article/guide/post is for informational and knowledge purposes only. Always use official Union Bank platforms or visit a nearby branch for secure banking access. We do not collect or store any personal banking data. we not sell data and make promises.