Bank of America checking account numbers are 10 digits long
Your Bank of America checking account number is always 10 digits. You'll find it on the bottom left of your checks, in your online banking portal, or by calling customer service. The account number itself is separate from your routing number (which is 9 digits) and your full bank details.
When you need to provide your account number for direct deposit, bill pay, or wire transfers, you're giving out just those 10 digits. Some forms or systems may ask for both your routing number and account number together, but the account number on its own is always 10 digits long.
Key Takeaways
- Bank of America checking account numbers are always 10 digits, printed on the bottom left of your checks.
- Your routing number (9 digits) is different from your account number and is needed for ACH transfers and direct deposit.
- You can find your account number in the mobile app, online banking, or by calling 1-800-432-1000.
- Never share your full account number with anyone who contacts you unsolicited, even if they claim to be from the bank.
Where to find your 10-digit account number
The easiest place to locate your account number is on a check. Look at the bottom of the check: the first set of numbers on the left is your routing number (9 digits), and the second set is your account number (10 digits). The third set is your check number.
If you don't have checks handy, log into your Bank of America online banking account or mobile app. Your account number appears on the account summary page and in your account settings. You can also call Bank of America customer service at 1-800-432-1000 and speak with a representative who can confirm your account number over the phone.
The difference between your account number and routing number
Your routing number identifies which Bank of America branch or processing center handles your account. It's always 9 digits. Your account number identifies your specific checking account within the bank's system. It's always 10 digits. Together, they form your complete bank details.
When you set up direct deposit with an employer, you'll need both numbers. When you send a wire transfer, you'll provide both. If you're paying a bill through your bank's bill pay system, you typically only enter your account number because the system already knows your routing number. Different situations call for different combinations of these numbers.
Why account numbers are standardized at 10 digits
Bank of America standardized its account numbers at 10 digits to create a consistent system across all its checking accounts. This length allows the bank to issue millions of unique account numbers without running out of combinations. The 10-digit format also works with most automated clearing house (ACH) systems, wire transfer networks, and bill pay platforms that businesses and individuals use.
Other banks use different lengths—some use 8 digits, others use 12 or more—but within Bank of America, 10 digits is the standard for all checking accounts. This consistency makes it easier for the bank's systems to process transactions and for customers to remember the format.
What to do if you can't find your account number
If you've lost your checks and can't access online banking, call Bank of America at 1-800-432-1000. Have your Social Security number and a form of identification ready. A representative can verify your identity and provide your 10-digit account number over the phone.
If you're locked out of your online account, you can reset your password through the Bank of America website or call the number above. Once you regain access, your account number will be visible in your account settings. If you suspect fraud or unauthorized access, report it immediately to the bank so they can secure your account.
Using your account number safely
Your account number is not as sensitive as your PIN or password, but you should still protect it. Never share it with anyone who calls you unsolicited, even if they claim to represent Bank of America. The bank will never ask for your account number over the phone unless you initiated the call.
When you provide your account number for legitimate purposes—setting up direct deposit, paying bills, or receiving a wire transfer—make sure you're dealing with a trusted organization. Verify the recipient's identity before sharing any banking details. If you're entering your account number on a website, confirm the URL is secure (it should start with "https://") and that you recognize the organization.
Account numbers on different Bank of America products
Bank of America checking accounts all use 10-digit account numbers. If you have a savings account, money market account, or credit card with the bank, each product has its own separate account number. Your checking account number won't work for transactions on your savings account, and vice versa.
If you have multiple checking accounts with Bank of America, each one has a unique 10-digit number. The routing number stays the same across all your accounts at the bank, but the account number changes. This separation helps the bank route your transactions to the correct account.
Frequently Asked Questions
Can I change my Bank of America account number?
No, you cannot change your account number. It's assigned when you open the account and remains the same for the life of that account. If you close the account and open a new one, you'll receive a new account number. If you're concerned about fraud or unauthorized use, contact Bank of America immediately rather than trying to change the number.
Is my 10-digit account number the same as my customer ID?
No, they are different. Your customer ID is a separate identifier that Bank of America uses internally to track your relationship with the bank across all your accounts and products. Your account number is specific to each individual account. When you call customer service, you may be asked for either one depending on what you're trying to do.
What if someone has my account number?
Having just your account number is not enough for someone to drain your account or make unauthorized transfers. They would also need your routing number, and even then, most transactions require additional verification like a password or PIN. If you're concerned, monitor your account regularly through online banking and contact Bank of America if you see suspicious activity.
Do I need my account number to use my debit card?
No, you don't need to provide your account number when using your debit card in stores or online. Your debit card has its own card number, expiration date, and CVV. Your account number is only needed for ACH transfers, wire transfers, direct deposit setup, and other bank-to-bank transactions.
Why is my account number printed on my checks?
Your account number is printed on checks so that when someone deposits or cashes a check you've written, the bank knows which account to deduct the funds from. The routing number tells the bank which institution to contact, and the account number tells them which specific account within that institution. This system has been standard for decades.