Your account number is printed on the bottom left of your checks, in your online banking portal, or by calling your bank's customer service line
The fastest way to find your account number depends on what you have access to right now. If you have a checkbook, look at the bottom of any check — you'll see three sets of numbers. The first is your routing number, the second (usually 10 to 12 digits) is your account number, and the third is the check number itself. If you don't have checks or prefer not to dig through them, log into your bank's website or mobile app — your account number appears on the account overview page, often labeled "Account Number" or "Account Details."
If neither of those options works, call the customer service number on the back of your debit card or on your bank's website and ask for your account number. They'll verify your identity and read it to you. This method works even if you've forgotten your online banking password or don't have a checkbook.
Key Takeaways
- Your account number is the middle set of digits on the bottom of any check you have.
- Online banking portals show your account number on the main account page or under account details.
- Calling your bank's customer service line is the most reliable method if you have no other way to find it.
- Your account number is different from your routing number, which is the first set of digits on your checks.
- Never share your full account number with anyone unless you initiated the contact and trust the recipient.
Finding your account number on a check
If you have access to a checkbook, this is the quickest method. Pick up any check from your book and look at the very bottom of the page. You'll see a series of numbers printed in a special magnetic ink format. These numbers read from left to right as: routing number, account number, check number.
The account number is always in the middle. It's typically between 10 and 12 digits long, though some banks use shorter or longer numbers. Write it down carefully — one wrong digit will cause transfers or deposits to fail. If your checks are old or the ink is faded, the numbers may be hard to read; in that case, move to another method.
Locating it in online banking
Log into your bank's website or mobile app using your username and password. Once you're logged in, look for a section labeled "Accounts," "Account Summary," "Account Details," or "Dashboard." Your account number should appear prominently on this page, often displayed next to your account type (such as "Checking" or "Savings").
Some banks hide the full account number behind a "Show" or "Reveal" button for security reasons — you may need to click it to see all the digits. If you can't find it on the main page, look for a link that says "Account Information," "Account Settings," or "View Details." You can also download your account statements from the app or website; the account number is printed at the top of every statement.
Calling your bank directly
If you don't have checks and can't access online banking, call the customer service number printed on the back of your debit card or found on your bank's website. Have your Social Security number, date of birth, and any other identifying information ready — the bank will ask for these to confirm you are the account holder.
Once verified, tell the representative you need your account number. They'll read it to you over the phone. Write it down as they say it and repeat it back to confirm you have it correct. Keep the representative's name and the time of the call in case you need to reference it later.
What to do if you can't remember which bank you use
If you're not sure which bank holds your account, start by checking your email for statements or account confirmations. Search your inbox for keywords like "bank," "account," or "statement." You can also look at your debit card — the bank's name and logo are printed on the front.
If you have direct deposit set up through an employer, contact your HR or payroll department and ask which bank your paycheck goes to. They'll have the routing and account number on file. Alternatively, if you remember making a transfer or payment to this account, check your other bank's transaction history — it may show the receiving bank's name.
Keeping your account number safe
Your account number, combined with your routing number, is enough for someone to set up unauthorized transfers or payments from your account. Never share it via email, text, or phone unless you initiated the contact and are certain you're speaking with your actual bank.
Scammers sometimes call pretending to be from your bank and ask for your account number "to verify your account." Real banks already have this information and will never ask for it unsolicited. If someone calls claiming to be from your bank and asks for your account number, hang up and call the number on the back of your debit card to report the call.
Account number vs. routing number
These two numbers work together but serve different purposes. Your routing number identifies which bank branch or institution holds your account — it's the same for all customers at that bank. Your account number identifies your specific account within that bank, and it's unique to you.
When you set up direct deposit, make a wire transfer, or receive a payment, you typically need both numbers. The routing number tells the sending bank where to send the money, and the account number tells that bank which specific account to deposit it into. On a check, the routing number comes first (usually nine digits), followed by your account number.
Frequently Asked Questions
Is my account number the same as my debit card number?
No. Your debit card number is a 16-digit number printed on the front of your card. Your account number is separate and is typically 10 to 12 digits. You can find your account number on checks or in online banking, but not on the card itself.
Can I use my account number to make purchases online?
No. Online purchases require your debit card number, expiration date, and CVV. Your account number is used for bank transfers, direct deposits, and bill payments — not for retail transactions.
What if I see multiple account numbers in my online banking?
If you have more than one account at the same bank (such as a checking account and a savings account), each one has its own account number. Make sure you're using the correct number for the account you want to use. The account type is usually labeled next to the number.
Do I need my account number to set up direct deposit?
Yes. Your employer or the organization sending you money will ask for your routing number and account number to set up direct deposit. Have both numbers ready when you contact your HR or payroll department.
What should I do if I think someone has my account number?
Contact your bank immediately. Tell them you believe your account number has been compromised. They can monitor your account for unauthorized activity and may issue you a new account number if needed. Review your recent transactions for anything you don't recognize.