Your bank account number is printed on the bottom left of every check you write, shown in your online banking portal, and on statements mailed to your address.

The easiest place to look is a check from your checking account. Open your checkbook and look at the bottom of any check. You will see a series of numbers separated by colons or dashes. The middle set of numbers is your account number. It typically runs 8 to 12 digits long, though the exact length varies by bank.

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 account summary or dashboard page. Some banks require you to click into account details or settings to see the full number — they may show only the last four digits on the main screen for security reasons.

A paper statement mailed to your home also contains your account number. Look near the top of the statement, usually next to your name and address. The account number appears on every statement your bank sends.

Key Takeaways

  • Your account number appears on the bottom of any check you own, in the middle set of digits between the routing number and the check number.
  • Online banking portals and mobile apps show your account number on the account summary page or in account details.
  • Paper statements mailed by your bank print your account number near the top, next to your account holder information.
  • If you cannot find your account number through these methods, call your bank's customer service line — the number is on the back of your debit card.

Finding your account number in online banking

Log into your bank's website using your username and password. On the main dashboard or home page, look for a section labeled "Accounts," "Account Summary," or "My Accounts." Your checking and savings accounts will be listed there, usually with the last four digits of the account number visible.

Click on the specific account you need. A details page will open showing the full account number. Some banks hide the full number behind a "Show" or "Reveal" button for security — click that button to display all digits. Write down or copy the number carefully, as you will need it for wire transfers, direct deposit setup, or other transactions.

Mobile apps work the same way. Open your bank's app, navigate to the accounts section, and tap the account you need. The full account number should appear on the account details screen.

Reading your account number from a check

A check has three sets of numbers printed along the bottom in a special magnetic ink called MICR (Magnetic Ink Character Recognition). From left to right, they are: routing number, account number, and check number.

The account number is always in the middle. It is the longest set of numbers and typically contains 8 to 12 digits. For example, if you see "121000248 : 123456789 : 0001" at the bottom of a check, your account number is 123456789. The routing number (121000248) identifies your bank, and the check number (0001) identifies that specific check.

This method works even if your online banking is down or you do not have access to your phone. Any check from your account will show the same account number.

What to do if you cannot locate your account number

Call your bank directly using the phone number on the back of your debit card or on your most recent statement. A customer service representative can read your account number to you over the phone. Have your Social Security number, date of birth, and a form of identification ready — the bank will verify your identity before sharing account details.

You can also visit a branch in person with a photo ID. A teller can print your account number for you or write it down on a piece of paper. This method is useful if you need the number when ready and do not want to wait for a phone call.

Some banks allow you to reset your online banking password or recover your login if you have forgotten it. Once you regain access to your account, you can see the account number yourself without calling.

Why you need your account number and when to share it

Your account number is necessary for setting up direct deposit from an employer, receiving wire transfers, or paying bills through automatic bank transfers. You will also need it if you are sending money to someone else's account or receiving a payment from a business.

It is safe to share your account number with people who need to send you money or receive money from you. Employers, payroll processors, and utility companies routinely ask for it. However, never share your account number along with your routing number and PIN or password to anyone you do not trust completely. A scammer with all three pieces of information could potentially drain your account.

If someone asks for your account number but you are unsure whether they should have it, hang up and call the organization directly using a phone number you find yourself — do not use a number they provided. Legitimate businesses will not pressure you to share account information when ready.

Account number versus routing number

Your account number and routing number are two different things, and both appear on your checks. The routing number identifies which bank or credit union holds your account. It is the same for all customers at that bank. The account number identifies your specific account within that bank — no two accounts at the same bank share the same account number.

When you set up direct deposit, you need both numbers. When you send a wire transfer, you need both numbers plus the recipient's name and bank. When you pay a bill online, you typically need only your account number, because the biller already knows which bank you use.

On a check, the routing number is on the left, the account number is in the middle, and the check number is on the right. Memorizing this order makes it straightforward to find either number quickly.

Frequently Asked Questions

Is it safe to write my account number on a check?

Yes. When you write a check, you are intentionally sharing your account number with the person or business receiving it. They need it to deposit the check. However, do not write your account number on documents you are mailing to strangers or posting online.

Can someone access my account with just the account number?

Not easily. A scammer would also need your routing number, PIN, password, or other verification information. Sharing your account number alone with a trusted payroll processor or bill-pay service is generally safe. Never share it with someone who calls you unexpectedly claiming to be from your bank.

What if I have multiple accounts at the same bank?

Each account has its own unique account number. If you have a checking account and a savings account, they will have different account numbers. Your checks will show only the checking account number. Log into online banking to see the account numbers for all your accounts.

Do I need my account number to use my debit card?

No. Your debit card works with your card number, which is different from your account number. The card number is printed on the front of the card. You only need your account number for transfers, direct deposit, or wire transfers.