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

The easiest place to look is the bottom of any check you have. The account number appears after the routing number and is usually nine to twelve digits long. If you don't have checks handy, log into your bank's website or open the mobile app — your account number will be listed in the account details or summary section, often labeled "Account Number" or "Account Information."

If you can't access your account online or don't have checks, call your bank's customer service line. You'll need to verify your identity with information like your Social Security number, date of birth, or answers to security questions. The representative will read your account number to you over the phone, and you can ask them to repeat it to confirm you have it correct.

Key Takeaways

  • Your account number appears on the bottom left of your checks, right after the routing number.
  • You can view your account number by logging into your bank's website or mobile app under account details or summary.
  • If you don't have checks or online access, call your bank's customer service line and verify your identity to get the number read to you.
  • Never share your account number with anyone you don't trust, and be cautious if someone asks for it unsolicited.

Finding your account number on a check

Look at the bottom of any check in your checkbook. You'll see a series of numbers printed in magnetic ink. Reading from left to right, the first set of numbers is your routing number (usually nine digits), and the second set is your account number. The account number is typically nine to twelve digits long and may have leading zeros.

Write down the account number exactly as it appears, including any zeros at the beginning. Some banks print the account number in a different location on the check, so if you don't see it in the standard spot, look along the bottom edge or the right side of the check.

Accessing your account number online

Log into your bank's website using your username and password. Once you're signed in, look for a section labeled "Account Summary," "Account Details," or "My Accounts." Your account number should be displayed prominently on this page, often near your account balance and recent transactions.

If you use your bank's mobile app, the process is the same. Open the app, sign in, and navigate to your account information. Many banks display the account number on the main dashboard or in a menu option for account settings. Some apps let you tap on the account number to copy it directly, which you can then paste into a form or email.

Getting your account number by phone

Call the customer service number 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 identification ready. The representative will ask you to verify this information before they share your account number with you.

Once you've been verified, ask the representative to read your account number slowly and clearly. Write it down as they say it, then repeat it back to them to make sure you have it correct. Ask them to spell out any numbers you're unsure about — for example, confirm whether a digit is a zero or the letter O.

What to do if you can't find your account number

If you've checked your checks and can't access your online account, visiting your bank in person is a reliable option. Bring a government-issued ID and ask a teller for your account number. They can print it out for you or write it down on a piece of paper.

Some banks also send account statements by mail that include your account number. If you have an old statement, your account number will be listed at the top or in the account information section. Keep in mind that if you've closed an account, that account number is no longer active and cannot be used.

Protecting your account number

Your account number is sensitive information. Share it only with people and organizations you trust, such as your employer (for direct deposit), your bank, or a business you're paying intentionally. Never give your account number to someone who calls or emails you unsolicited, even if they claim to be from your bank.

If you suspect someone has your account number without permission, contact your bank when ready. They can monitor your account for unauthorized activity and, if necessary, close the account and open a new one with a different number. The sooner you report the issue, the faster your bank can act to protect your money.

Frequently Asked Questions

Is my account number the same as my debit card number?

No. Your debit card number is the 16-digit number printed on the front of your card. Your account number is separate and is typically nine to twelve digits. Both are linked to your checking account, but they're different numbers used for different purposes.

Can I use my account number to make purchases online?

Your account number alone is not enough to make online purchases. Most online retailers require your debit card number, expiration date, and CVV code. Some bill-pay services do use your account number and routing number together, but this is typically for bank-to-bank transfers or setting up automatic payments, not retail purchases.

What if my bank merged with another bank?

Your account number usually stays the same after a merger, but contact your bank to confirm. They'll let you know if your account number has changed and will provide you with the new number if it has. Check any statements or account documents you receive after the merger to see the updated information.

Do I need both my routing number and account number?

For most banking transactions like direct deposit or wire transfers, yes — you need both. Your routing number identifies which bank you use, and your account number identifies which specific account within that bank. Together, they may support money goes to the right place. For other transactions, like online purchases, you typically only need your debit card number.