Your checking account number is printed on the bottom left of every check you write, and also appears in your online banking portal under account details.
The easiest place to look is a check from your checkbook. Open to any unused check and look at the bottom left corner. You will see three sets of numbers separated by colons or special symbols. The middle set — usually 10 to 12 digits — is your account number. The first set (typically 9 digits) is your bank's routing number.
If you do not have checks handy, log into your bank's website or mobile app. Most banks display your account number prominently on the dashboard or under an "Account Details" or "Account Information" section. Some banks require you to click into a specific account tile first if you hold multiple accounts.
You can also call your bank's customer service line or visit a branch in person. Have your ID ready. A teller or phone representative can read your account number to you in seconds.
Key Takeaways
- Your account number appears on the bottom left of every check, printed as the middle set of digits between your routing number and a check number.
- Online banking portals show your account number under account details or account information, usually without logging into a separate page.
- Your bank's customer service line or a branch visit will provide your account number if you cannot locate it yourself.
- Never share your full account number with anyone who contacts you unsolicited, even if they claim to be from your bank.
Finding it in online banking
Log into your bank's website using your username and password. Look for a dashboard, home page, or accounts section. Most banks display a summary of each account you hold, including the account number. The number may be partially masked for security — showing only the last four digits — but you can usually click or tap to reveal the full number.
If you use your bank's mobile app, the process is the same. Open the app, navigate to your checking account, and look for account details or information. Some apps show the full number by default; others require a tap to unhide it.
If you cannot find it after a few clicks, check your bank's help section or FAQ. Search for "account number" or "where to find account number." Most banks have a short guide with screenshots showing exactly where to look.
Reading it from a check
A check has three groups of numbers printed along the bottom in a special magnetic ink. From left to right, they are: routing number (9 digits), account number (usually 10 to 12 digits), and check number (4 to 5 digits). The account number is always in the middle.
The numbers may be hard to read if the check is old, faded, or printed poorly. If you cannot make out the digits clearly, use a magnifying glass or take a photo with your phone's camera and zoom in. If the check is too damaged to read, move to your online banking portal or call your bank instead.
Getting it by phone or in person
Call your bank's customer service number, which is usually printed on the back of your debit card or on your bank's website. Have your Social Security number, date of birth, and a form of ID ready. The representative will verify your identity and then read your account number to you.
You can also visit any branch of your bank in person. Bring a photo ID. A teller can print out a statement or simply tell you your account number on the spot. This method takes a few minutes but requires no phone call or online access.
What to do if you cannot find it
If you have no checks, no online access, and cannot reach your bank by phone, request a bank statement. You can do this online, by phone, or in person. Your account number appears on every statement, usually near the top. Some banks mail statements monthly; others require you to download them from your portal.
If you need your account number urgently and your bank is closed, check any recent emails from your bank. Account statements, payment confirmations, or wire transfer receipts often include the account number. You can also look for old checks in a drawer or file — the account number does not change unless you close and reopen the account.
Security: when not to share your account number
Your account number alone cannot be used to withdraw money or make purchases, but it is still sensitive information. Never share it with someone who calls or emails you unsolicited, even if they claim to be from your bank. Real banks do not ask for your account number over the phone unless you initiated the call.
When you need to provide your account number — to set up direct deposit, arrange a wire transfer, or pay a bill — make sure you are on a secure website (look for "https" in the address bar) or speaking to a representative you called directly. If you are unsure whether a request is legitimate, hang up and call your bank's main number to verify.
Frequently Asked Questions
Is my account number the same as my debit card number?
No. Your debit card number is printed on the front of the card and is different from your account number. Your account number is what your bank uses internally to identify your checking account. You need the account number for direct deposit, wire transfers, and bill payments — not for everyday card purchases.
Can someone steal money using only my account number?
Your account number alone is not enough to withdraw money or make unauthorized transfers. A thief would also need your routing number and usually additional verification like your PIN or password. That said, keep your account number private because it is one piece of the puzzle.
What if my bank merged or changed its name?
Your account number stays the same after a merger. Your routing number may change, but your account number does not. If you are unsure after a merger, log into your online banking or call the new bank's customer service to confirm both numbers.
Do I need both my account number and routing number for direct deposit?
Yes. Direct deposit requires both numbers. Your employer or the organization sending the deposit will ask for your routing number (to find your bank) and your account number (to find your specific account). Both are printed on the bottom of your checks in that order.