Your account number is the second set of digits printed on the bottom left of your check, between the routing number and the check number
When you look at the bottom of a check, you see three groups of numbers separated by vertical lines. The first group is your bank's routing number. The second group—usually 10 to 12 digits long—is your account number. The third, shorter group on the far right is the check number itself.
Your account number identifies your specific checking account at your bank. It stays the same across all your checks from that account. You'll use this number when you set up direct deposit, arrange wire transfers, or give payment instructions to employers or other organizations.
The account number is printed in magnetic ink, the same as the routing number, so it can be read by check-processing machines. It's also printed in regular ink above the magnetic line so you can read it by eye.
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 checking account.
- You can find your account number on any check from that account, or by logging into your bank's website or calling customer service.
- You'll need your account number for direct deposit setup, wire transfers, and other payment arrangements.
How to read the numbers at the bottom of your check
The bottom of every check has a standard layout. On the far left, you'll see the routing number—nine digits that identify your bank. Immediately after that comes your account number. Then, on the far right, comes the check number.
All three numbers are printed in a special magnetic ink that machines can read during processing. Above that magnetic line, your bank also prints the same numbers in regular black ink so you can read them without special equipment.
The account number is always the middle group. If you're unsure which digits belong to your account number, count: nine digits for routing, then the next 10 to 12 digits are your account number. The remaining short number on the right is your check number.
What to do if you can't read the numbers clearly
If the magnetic ink on your check is faded, smudged, or worn, you may have trouble reading your account number. In that case, don't guess—contact your bank directly. You can call the customer service number on the back of your check or log into your online banking account.
Your bank can tell you your account number over the phone or show it to you in your account settings online. Most banks display your full account number in the dashboard when you log in, though some mask part of it for security and show only the last four digits by default. You can usually click to reveal the full number.
If you've lost all your checks or never received them, your bank can still provide your account number. You'll need to verify your identity first, usually by answering security questions or providing your Social Security number.
Why your account number matters for payments and transfers
Your account number is essential information for anyone who needs to send money to your account. When you set up direct deposit for your paycheck, your employer needs both your routing number and your account number to deposit funds into the right account at the right bank.
Similarly, if you arrange a wire transfer or an ACH transfer from another bank, you'll provide your account number along with your routing number. Without the correct account number, the money goes to the wrong place or the transfer fails entirely.
Some organizations also ask for your account number when you authorize them to withdraw money from your account—for example, to pay a utility bill or insurance premium automatically each month. Always double-check that you've given them the correct number before authorizing the withdrawal.
Keeping your account number secure
Your account number is not a secret like your PIN or password, but you should still be thoughtful about who you give it to. Anyone with your routing number and account number can set up a transfer or withdrawal from your account, though most banks require additional verification before processing large transfers.
Never share your account number in response to an unsolicited email, text, or phone call, even if the message appears to come from your bank. Legitimate banks never ask for your account number by email or text. If you're unsure whether a request is real, hang up and call your bank directly using the number on your debit card or statement.
When you write a check, your account number is visible to whoever receives it. That's normal and expected—checks are designed to be shared. But if you're mailing a check or leaving it somewhere, be aware that the recipient will see your account number.
Finding your account number without a check
If you don't have a check handy, you can find your account number in several other places. Log into your bank's website or mobile app—your account number usually appears on the main dashboard or in your account settings. Some banks show the full number; others display only the last four digits and require you to click to reveal the rest.
You can also call your bank's customer service line, which is printed on your debit card, credit card statement, or any bank correspondence. Have your ID ready, and the representative can provide your account number over the phone after verifying your identity.
If you receive bank statements by mail, your account number is printed on those statements as well, usually near the top. Digital statements show it in the same place.
Common mistakes when reading your account number
The most common error is confusing your account number with your check number. Remember: the check number is the short number on the far right of the bottom line. Your account number is the longer middle section. If you give someone your check number thinking it's your account number, transfers will fail.
Another mistake is including the routing number as part of your account number. The routing number comes first and is always nine digits. Your account number starts after that. If you accidentally include the routing number when you provide your account number, the receiving bank won't be able to process the transfer correctly.
Some people also misread similar-looking digits—especially 0 and O, or 1 and l. If you're reading your account number aloud to someone, spell out any digits that could be confused. For example, say "zero" instead of "oh" and "one" instead of "el".
Frequently Asked Questions
Is my account number the same on all my checks?
Yes. Every check from the same checking account has the same account number printed on it. If you have multiple accounts at the same bank—a checking account and a savings account, for example—each account has its own unique account number.
Can someone withdraw money from my account if they have my account number?
They would need both your account number and your routing number, and most banks require additional verification before processing transfers. However, don't share your account number with people you don't trust. If you're concerned about unauthorized activity, contact your bank immediately.
What if I give someone the wrong account number?
The transfer or deposit will either fail or go to the wrong account. If money goes to the wrong account, contact your bank right away. They can sometimes reverse the transaction, but the process takes time. Always double-check account numbers before authorizing any transfer.
Do I need my account number to cash a check?
No. When you cash or deposit a check, the bank reads the account number from the check itself. You don't need to provide it separately. You do need to show ID and sign the back of the check.
Will my account number change if I get new checks?
No. Your account number stays the same for the life of your account, even if you order new checks multiple times. The only time your account number changes is if you close the account and open a new one.