Your account number is printed on the bottom left of your check, after the routing number and before the check number
The bottom of every check contains three sets of numbers printed in a special magnetic ink. Reading from left to right, you see the routing number (nine digits), then your account number (usually 10 to 12 digits), then the check number (three to four digits). Your account number is the middle set — the longest one.
The account number identifies your specific checking account at your bank. It stays the same across all your checks from that account. If you have multiple accounts at the same bank, each one has its own account number, and each will appear on the checks for that account.
You need this number when you set up direct deposit, arrange automatic bill payments, or give someone instructions to deposit money into your account. Banks also ask for it when you call customer service or log into online banking.
Key Takeaways
- Your account number is the middle set of digits on the bottom of your check, between the routing number and the check number.
- Account numbers are typically 10 to 12 digits long and are unique to your specific account at your bank.
- You can also find your account number on your bank statement, in your online banking portal, or by calling your bank.
- The account number remains the same for all checks from the same account, even if you order new checks.
How to read the numbers on the bottom of your check
The magnetic ink line at the bottom of your check follows a standard format used by all U.S. banks. The first nine digits are your bank's routing number — this tells the banking system which bank holds your account. After a small gap, the next set of digits is your account number. After another gap comes your check number, which is also printed in the upper right corner of the check.
Some checks print the account number in a slightly different position depending on the bank's design, but it always appears between the routing number and the check number. If you are unsure which set of numbers is which, your bank's website or a call to customer service can confirm it.
Other places to find your account number
You do not need a check in front of you to find your account number. Your bank statement — whether you receive it by mail or view it online — displays your account number at the top or in a summary section. Most banks also show it in your online banking portal under account details or account settings.
If you have a debit card from your bank, the account number may be printed on the back of the card, though not all banks do this. You can also call your bank's customer service line and provide your name and Social Security number to confirm your account number over the phone.
Why banks print the account number on checks
The account number on your check serves two purposes. First, it allows the banking system to route your check to the correct account when someone deposits it. Second, it gives you a quick reference without having to log into your account or dig through paperwork.
The magnetic ink format — called MICR (Magnetic Ink Character Recognition) — allows bank sorting machines to read the numbers automatically, which speeds up check processing. The account number is part of this system, not a security feature, which is why it appears in plain sight on every check you write.
Keeping your account number secure
Because your account number appears on every check you write, treat it the way you would treat any banking information. Do not share it with people you do not know or trust. If someone calls claiming to be from your bank and asks for your account number, hang up and call your bank directly using the number on your statement or card — never use a number the caller provides.
When you give your account number to set up direct deposit or bill payments, make sure you are communicating with the actual employer, utility company, or service provider, not a scammer posing as one. Legitimate businesses will ask for your account number through secure channels, not in unsolicited emails or texts.
What to do if you cannot find your account number
If you have no checks on hand and cannot access your online banking account, the fastest way to find your account number is to call your bank. Have your ID ready and be prepared to answer security questions. Most banks can tell you your account number within a minute or two.
If you are setting up direct deposit for a new job or changing banks, ask your employer or the new bank for help locating the information. Many employers have a form that walks you through finding both the routing number and account number, and new banks often provide this information during the account opening process.
Frequently Asked Questions
Is my account number the same on all my checks?
Yes. Every check from the same account has the same account number printed on it. If you order new checks, the account number will be the same. If you close the account and open a new one at the same bank, you will receive a new account number.
Can someone use my account number to steal money from my account?
Your account number alone is not enough to withdraw money or make unauthorized transfers. A thief would also need your routing number and typically additional verification like your PIN or online banking password. Still, do not share your account number with strangers or unverified sources.
Why is my account number different from my routing number?
The routing number identifies your bank; the account number identifies your specific account within that bank. You may have multiple accounts at the same bank, each with a different account number but the same routing number. Both numbers are needed for direct deposits and transfers.
What if the numbers on my check are smudged or hard to read?
Contact your bank and provide your name and Social Security number. They can confirm your account number and routing number without you having to read the check. You can also request a replacement check or simply use your online banking portal to find the information.