The fastest way: check your debit card, checks, or online banking
Your bank account number is printed on the bottom left of your checks, if you have them. It is also on the back of your debit card in smaller print. If you use online banking, log in to your bank's website or app — your account number appears on the account summary page, usually near the top.
If you have none of these, call your bank's customer service line. The number is on any statement they sent you, or on the back of your debit card. A representative can read your account number to you over the phone, and you can write it down. This takes about two minutes.
Key Takeaways
- Your account number is printed on the bottom left of any checks you have, below your routing number.
- Online banking shows your account number on your account summary page once you log in.
- Your bank's customer service line can give you your account number by phone if you cannot find it in writing.
- You do not need to visit a branch in person — a phone call or login is enough.
Finding it on paper statements and documents
If your bank mails you statements, your account number appears on every one. Look at the top right corner or the top left — banks place it differently, but it is always near the top of the page. The number is usually 8 to 12 digits long, though this varies by bank.
Loan documents, credit card statements, and mortgage paperwork from the same bank also show your account number. Any official document from your bank will have it. If you have kept old statements or letters, you can find it there.
Logging into your bank's website or mobile app
Open your bank's website in a web browser or open their mobile app on your phone. Log in with your username and password. Once you are logged in, look for a section called "Account Summary," "My Accounts," or "Account Details." Your account number will be displayed there, usually with the last four digits highlighted or the full number shown.
Some banks show your account number on the main dashboard as soon as you log in. Others require you to click into a specific account to see it. If you cannot find it, look for a "Help" or "Contact Us" link on the same page — most banks have a live chat option that can point you to the right spot in seconds.
Calling your bank by phone
Find your bank's customer service number on your debit card, a recent statement, or by searching "[Your Bank Name] customer service" online. Call the number and tell the representative you need your account number.
Have your Social Security number or the phone number associated with your account ready. The bank will verify your identity before giving you the number. This is a security step — it means they will not give your account number to someone who calls pretending to be you. The call usually takes less than five minutes.
Visiting a bank branch in person
If you prefer to speak to someone face-to-face, go to any branch of your bank during business hours. Bring a photo ID. Tell a teller you need your account number. They will look it up and write it down for you or show it on their screen.
This is the slowest option because you have to travel and wait, but it works if you are uncomfortable calling or using online banking. Some people find it reassuring to handle banking in person, especially if they are new to banking.
What to do if you cannot remember which bank you use
If you have a debit card, the bank name is printed on the front. If you have old checks, the bank name is at the top. If you have a statement, the bank name and address are at the top.
If you have none of these, check your email for statements or account notifications from banks. Search your email inbox for words like "bank," "account," or "statement." You can also contact ChexSystems at 1-800-428-9623 — they maintain a record of bank accounts you have opened, and they can tell you which banks have records under your name. This is free.
Keeping your account number safe once you have it
Your account number, combined with your routing number, allows someone to set up automatic payments from your account or transfer money out. Do not share it with anyone unless you are setting up a direct deposit, paying a bill, or sending money intentionally.
If someone calls you asking for your account number and you did not call them first, hang up. Legitimate companies and government agencies do not call asking for account numbers. Write your account number down and keep it in a safe place at home, or store it in a password-protected note on your phone.
Frequently Asked Questions
Is my account number the same as my card number?
No. Your card number is the 16 digits on the front of your debit or credit card. Your account number is different — it is usually 8 to 12 digits and appears on checks, statements, and online banking. A card can be replaced, but your account number stays the same.
Can I find my account number on a bank statement from years ago?
Yes. Your account number does not change unless you close the account and open a new one. An old statement is just as valid as a new one. If you have kept statements in a file or box, you can look at any of them.
What if I have multiple accounts at the same bank?
Each account has its own number. If you have a checking account and a savings account, they have different account numbers. When you log into online banking, you will see all your accounts listed separately, each with its own number.
Do I need my account number to open a new account at the same bank?
No. You can open a new account without knowing your existing account number. The bank will look you up by your Social Security number and ID. However, if you want to transfer money between your accounts, you will need the account number of the account you are transferring from or to.