Your account number is the second set of digits at the bottom of the check, between the routing number and the check number
Look at the bottom left of any check. You will see three groups of numbers separated by vertical lines. The first group is your routing number (nine digits). The second group is your account number (typically 10 to 12 digits, though this varies by bank). The third group, on the far right, is the check number.
The account number identifies your specific deposit account at the bank. It is printed in magnetic ink so that check-processing machines can read it automatically. When you write a check, the routing number tells the banking system which bank to send it to, and the account number tells that bank which account to pull the money from.
You can also find your account number on your bank statement, on your debit card, in your online banking portal, or by calling your bank's customer service line. But the check itself is the quickest place to look if you have one in front of you.
Key Takeaways
- Your account number appears as the middle set of digits at the bottom of a check, typically 10 to 12 digits long.
- The three number groups at the bottom of a check are routing number, account number, and check number, in that order from left to right.
- Account numbers are printed in magnetic ink (MICR encoding) so machines can read them during check processing.
- If you do not have a check available, your bank statement or online banking portal will show your account number.
How the three numbers work together
When you write a check, all three numbers serve a purpose in moving money. The routing number is a five-digit code followed by a four-digit code that identifies your specific bank branch or processing center. The account number identifies which account at that bank the money comes from. The check number is straightforward a sequential identifier for that particular check, so you and your bank can track which check was cashed or deposited.
If any of these numbers is wrong or illegible, the check may be rejected or delayed. This is why banks print them in magnetic ink rather than regular ink — the machines that sort checks can read magnetic ink even if the check is wrinkled, faded, or partially obscured.
Account number length varies by bank
Most banks print account numbers that are 10 to 12 digits long, but some use fewer and some use more. Credit unions, regional banks, and large national banks do not all follow the same standard. The length does not matter for your purposes — what matters is that you copy the entire number exactly as it appears on your check.
If you are setting up a direct deposit or providing your account number to someone else, always use the number from your check or your bank statement rather than guessing at the length. Truncating or adding digits will cause the transaction to fail.
Why you might need to provide your account number
You will be asked for your account number when you set up direct deposit for payroll or benefits, arrange a wire transfer, authorize an automatic payment, or give someone permission to deposit a check on your behalf. In each case, the account number ensures the money lands in the right place.
Never share your account number with someone you do not trust. Combined with your routing number (which is public information), your account number is enough for someone to set up unauthorized transfers or payments from your account. Your bank will not ask you for your account number via email or unsolicited phone call — if someone contacts you claiming to be from your bank and asking for it, hang up and call your bank directly using the number on your card or statement.
Finding your account number without a check
If you do not have a check in front of you, your account number appears in several other places. Log into your online banking portal — it is usually displayed on the dashboard or in the account details section. Your monthly bank statement lists it at the top or in the account information box. Your debit card does not print the account number, but your bank's customer service line can provide it in seconds if you call and verify your identity.
Some banks also print your account number on the back of your debit card or in a welcome letter that came with your account. If you opened your account online, check your email for a confirmation message that may include account details.
What happens if your account number is wrong
If you provide an incorrect account number for a direct deposit or automatic payment, the transaction will typically be rejected before any money moves. The receiving bank's system will not find a matching account and will bounce the request back to the sender. This causes a delay but not a loss of money.
If the wrong account number happens to match someone else's account at the same bank, the money could be deposited to the wrong person's account. This is rare but possible. If it happens, contact your bank when ready — they can usually reverse the transaction and reroute the funds to the correct account, though it may take a few business days.
Frequently Asked Questions
Is my account number the same as my routing number?
No. Your routing number identifies your bank or bank branch. Your account number identifies your specific account at that bank. Both appear at the bottom of your check, but they are different numbers in different positions.
Can someone use my account number to steal money from my account?
Your account number alone is not enough to withdraw money, but combined with your routing number it can be used to set up unauthorized transfers or payments. Never share your account number with someone you do not trust. If you suspect fraud, contact your bank when ready.
What if I cannot read the account number on my check because the ink is faded?
Contact your bank and provide your name, address, and any other identifying information. They can look up your account number in their system. You can also log into your online banking portal or check a recent bank statement.
Do I need both my routing number and account number to receive a direct deposit?
Yes. Your employer or the organization sending the payment needs both numbers to route the money to the correct account at the correct bank. Both numbers appear together at the bottom of your check.
Will my account number change if I move to a different branch of the same bank?
No. Your account number stays the same even if you change branches or move to a different state. The routing number may change if you move to a branch with a different routing code, but your account number is tied to your account, not to a physical location.