Your account number is the second set of digits on the bottom of a check, printed between the routing number and the check number
The bottom left of a check shows three separate numbers in a specific order. The routing number comes first (nine digits), your account number comes second (typically 10 to 12 digits), and the check number comes last (usually four digits). The account number is the one you need when you set up direct deposit, arrange wire transfers, or give banking details to an employer or government agency.
These numbers are printed in magnetic ink character recognition (MICR) format, which means they use a special font designed to be read by both machines and humans. The account number sits in the middle position because that is the standard layout banks use across the United States. If you cannot find three distinct number groups at the bottom of your check, you may be looking at a duplicate or starter check that was printed incorrectly.
Key Takeaways
- The account number is the middle set of digits on the bottom of a check, positioned between the routing number and the check number.
- Account numbers are typically 10 to 12 digits long, though the exact length varies by bank.
- You can also find your account number on your bank statement, in your online banking portal, or by calling your bank's customer service line.
- Never share your account number with someone you do not trust, as it can be used to set up unauthorized transfers or payments.
How to identify each number on the check bottom
The three numbers at the bottom of a check always appear in the same order from left to right. The first number (nine digits) is your bank's routing number, which identifies which bank or credit union holds your account. The second number (10 to 12 digits) is your account number, which identifies your specific account within that bank. The third number (usually four digits) is the check number, which corresponds to the number printed in the upper right corner of the check.
The spacing between these numbers matters. There is typically a small gap between the routing number and account number, and another gap between the account number and check number. If you are unsure which is which, count the digits: routing numbers are always nine digits, check numbers are usually four, and account numbers fall in between. Your bank statement will also show your account number, so you can compare it to what you see on the check.
Why the account number matters for refunds and payments
When you receive a tax refund, insurance refund, or government payment, the agency sending the money needs your account number to deposit it directly into your bank account. If you provide the wrong account number, the deposit may go to someone else's account or be rejected by your bank. This is why it is critical to copy the number correctly when you fill out direct deposit forms or provide banking information over the phone.
The same applies when you set up automatic bill payments or arrange for an employer to deposit your paycheck. The account number, combined with the routing number, creates a unique identifier for your account. Without the correct account number, the transaction cannot be processed. If you are unsure whether you have copied it correctly, verify it against your bank statement or call your bank to confirm before submitting the information.
Other places to find your account number
You do not need a physical check to find your account number. Your bank statement—whether printed or online—displays your account number at the top or in a summary section. If you use online banking, log in to your account and look for account details or account information; your account number will be listed there. Many banks also print the account number on debit cards, though it may be abbreviated or partially hidden for security reasons.
If you have lost your checks or do not have a statement handy, call your bank's customer service number (usually on the back of your debit card or on your bank's website). Have your identification ready, and a representative can read your account number to you over the phone. Some banks also allow you to view your account number through their mobile app. Never share your account number with someone you do not know, and be cautious about providing it over unsecured email or text message.
Common mistakes when reading the account number
The most common error is confusing the account number with the routing number. The routing number always comes first and is always nine digits. If you see a nine-digit number at the bottom left of the check, that is the routing number, not the account number. The account number comes immediately after it and is longer—typically 10 to 12 digits depending on your bank.
Another mistake is misreading the numbers themselves. The MICR font can be difficult to read if the check is worn, faded, or printed poorly. The number zero (0) can look like the letter O, and the number one (1) can look like the letter I or the number seven (7). If you are filling out a form that requires your account number, type it slowly and double-check each digit. If you are reading it aloud to someone, spell out any digits that could be confused—for example, say "zero" instead of "O" and "one" instead of "I".
What to do if your account number is compromised
If you believe someone has obtained your account number without permission, contact your bank immediately. Your bank can monitor your account for unauthorized activity and may issue you a new account number if necessary. You do not need to close your account unless your bank recommends it. A new account number will require you to update direct deposit information with your employer or any agencies that send you payments, so ask your bank what steps you need to take.
If unauthorized transactions have already occurred, report them to your bank as soon as possible. Federal law limits your liability for unauthorized transfers, but the sooner you report the problem, the better protected you are. Keep a record of all communications with your bank, including the date, time, and name of the representative you spoke with. If the issue involves a refund or government payment that was deposited into the wrong account, contact the agency that sent the payment and provide them with the correct account number so they can reissue it.
Frequently Asked Questions
Is the account number the same as the check number?
No. The check number is the third set of digits on the bottom of the check and is usually four digits long. It corresponds to the number printed in the upper right corner of the check. The account number is the middle set of digits and is much longer (10 to 12 digits). They serve different purposes and are not interchangeable.
Can I use the account number from an old check?
Yes, as long as the account is still open. Your account number does not change when you order new checks. However, if your bank issued you a new account number due to fraud or a security breach, you must use the new number. If you are unsure whether your account is still active or has been closed, contact your bank.
What if I cannot read the account number on my check?
Call your bank's customer service line and have them read it to you. You can also log into your online banking account or check your most recent bank statement. If your checks are too faded or damaged to read, order new checks from your bank or an authorized check printer.
Do I need both the routing number and account number for direct deposit?
Yes. Direct deposit requires both numbers. The routing number tells the sending bank which bank to send the money to, and the account number tells that bank which account within the bank should receive the deposit. Without both, the transaction cannot be completed.