Your account number is printed on the bottom left of your checks, or you can find it in your bank's mobile app or online banking portal

The account number is a unique identifier for your specific checking account — it tells your bank which account to pull money from or deposit money into. It is different from your routing number, which identifies the bank itself. You will need both numbers together to set up direct deposit, pay bills by bank transfer, or give someone permission to move money in or out of your account.

If you have a checkbook, the easiest place to look is the bottom of any check. You will see a series of numbers printed in a special magnetic ink. The account number is the middle set of numbers — usually 10 to 12 digits long, though the exact length varies by bank.

Key Takeaways

  • Your account number appears on the bottom left of your checks, between the routing number and the check number.
  • If you do not have checks, log into your bank's website or mobile app and look for "Account Details" or "Account Information" to find it there.
  • You can also call your bank's customer service line and provide your name and Social Security number to have them read it to you over the phone.
  • Never share your full account number with someone you do not trust, since it can be used to withdraw money or set up unauthorized transfers.

Finding it in your online banking account

If you do not have checks or cannot find them, your bank's website or app is the fastest way to locate your account number. Log in to your account and look for a section called "Account Details," "Account Information," "My Accounts," or sometimes just "Accounts." The account number will be displayed there, often with the last four digits highlighted or the full number shown.

Different banks organize this differently. Some show it on the main dashboard as soon as you log in. Others require you to click into your specific checking account first, then look for a details or information tab. If you cannot find it after a minute of looking, most banks have a search function — try typing "account number" into the help or search box.

Reading the numbers on a check

At the bottom of a check, you will see three groups of numbers printed in a special magnetic font. From left to right, they are: the routing number (9 digits), the account number (usually 10 to 12 digits), and the check number (usually 4 digits). The account number is always in the middle.

The numbers are printed this way so that machines can read them automatically when checks are processed. You can read them by eye just as easily. If the print is faded or hard to see, you can still call your bank — they can confirm the number matches what they have on file.

Calling your bank directly

If you prefer to speak with someone, call the customer service number on the back of your debit card or on your bank statement. Have your name, date of birth, and Social Security number ready. The representative will verify your identity and then read your account number to you.

This method takes a few minutes longer than looking it up yourself, but it is reliable and gives you a chance to ask other questions at the same time. Some banks also have automated phone systems that will read your account number back to you after you enter your PIN or answer security questions.

What to do if you cannot find your account number

If you have lost your checks, do not have online banking set up yet, and cannot reach your bank by phone, look for your most recent bank statement. Many statements print the account number at the top or in a summary section, though not all of them do. If your statement does not show it, you will need to set up online banking or call the bank.

Setting up online banking usually takes 10 to 15 minutes and requires your debit card, Social Security number, and a phone number or email address on file. Once you are logged in, you will have access to your account number and much more — you can see your balance, recent transactions, and transfer money without waiting for a representative.

Keeping your account number safe

Your account number is sensitive information. Do not write it down and leave it lying around, do not text it to anyone, and do not share it with someone who calls you claiming to be from your bank. Your bank will never ask for your full account number over the phone — they will already have it in their system.

It is safe to give your account number to your employer (for direct deposit), to a business you are paying (like a utility company), or to someone you trust who needs to send you money. But if you give it to the wrong person, they can set up unauthorized transfers or withdrawals. If you think someone has your account number and you did not authorize it, call your bank right away.

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 the bank uses internally to identify your checking account. You need the account number for bank transfers and direct deposit, but the debit card number for purchases and ATM withdrawals.

Can someone withdraw money if they only have my account number?

They would need your account number and your routing number together, plus authorization from you or a court order. Having just the account number alone is not enough to drain your account, but it is still information you should keep private. If you are worried someone has it, contact your bank.

What if the numbers on my check are smudged or faded?

You can still use the check — the bank's machines can usually read faded magnetic ink. But if you want to be certain of the number, call your bank or log into your online account. Do not guess or try to fill in missing digits, as that could cause the check to be rejected or processed incorrectly.

Do I need my account number to open a savings account at the same bank?

No. When you open a new account, the bank will assign you a new account number for that account. Your checking account number stays with your checking account only. Each account you have at the bank gets its own unique number.