The account number is the second set of digits on the bottom left of your check, between the routing number and the check number
Look at the bottom of any check you have. You will see three groups of numbers printed in magnetic ink. The first group (on the far left) is your routing number. The second group, in the middle, is your account number. The third group, on the far right, is the individual check number.
Your account number is typically 10 to 12 digits long, though the length varies by bank. It identifies your specific checking account at your bank. This is the number you need when you set up direct deposit, arrange automatic bill payments, or receive a wire transfer.
The account number appears in the same location on every check from your account. If you have multiple accounts at the same bank, each will have a different account number, but they will share the same routing number.
Key Takeaways
- Your account number is the middle set of digits at the bottom of your check, positioned between the routing number and the check number.
- Account numbers are typically 10 to 12 digits long and identify your specific checking account.
- The account number stays the same on every check from that account and appears in the same position each time.
- You need your account number for direct deposit setup, automatic payments, wire transfers, and other banking transactions.
- If you cannot locate a check, you can find your account number on your bank statement or by logging into your online banking portal.
How to read the three number groups on your check
The bottom of a check always displays three distinct number sequences in a specific order. Understanding which is which prevents confusion when you need one for a transaction.
The routing number comes first, on the far left. This nine-digit number identifies your bank or credit union. Every financial institution has its own routing number, and all customers at that bank share the same one.
The account number comes second, in the middle. This is unique to your individual account. Even if you have multiple accounts at the same bank, each one has its own account number.
The check number comes third, on the far right. This number identifies the individual check itself. Each check in your book has a different check number, printed in sequence.
What the account number looks like and where exactly it sits
The account number appears in the lower left portion of your check, printed in the same magnetic ink as the routing and check numbers. It is positioned directly to the right of the routing number and directly to the left of the check number. The three numbers are separated by small vertical lines or symbols.
On most checks, the account number is also printed in the upper right corner of the check in regular (non-magnetic) ink, though this version is smaller and less prominent. The version at the bottom in magnetic ink is the one used for electronic processing.
The account number does not appear anywhere else on the check. Your name, address, and the check amount are printed elsewhere on the check, but they are not part of the account identification system.
When you need your account number and where else to find it
You will need your account number for several common banking tasks. Direct deposit requires your account number so your employer can send your paycheck to the correct account. Setting up automatic bill payments also requires it. If you receive a wire transfer or need to send one, you will provide your account number to the sender or your bank.
If you do not have a check in front of you, you can find your account number in other places. Your bank statement lists it at the top or in a summary section. Your debit card may have the last four digits of your account number printed on it. Your online banking portal displays your full account number when you log in. You can also call your bank's customer service line and provide your name and other identifying information to have them read it to you.
Some banks print your account number on your monthly statements in multiple places to make it easy to locate. Others print it only once. Either way, your bank statement is always a reliable source if you cannot find a check.
Differences between account numbers at different banks
Account number length varies by bank. Most banks use 10 to 12 digits, but some use fewer and others use more. A bank in one state may use a different length than a bank in another state. This variation does not affect how the account number works—it is simply how each bank structures its numbering system.
The position of the account number on the check is the same across all banks: it always sits between the routing number and the check number at the bottom left. The magnetic ink format is also standard across all banks. So even if you switch banks, you will recognize the account number in the same location on your new checks.
Some banks include additional information in the magnetic ink line, such as a branch code or other identifier. This does not change the location or function of your account number—it is simply additional data that the bank's processing system uses.
What to do if you cannot read the account number on your check
If the magnetic ink at the bottom of your check is faded, smudged, or damaged, the number may be hard to read. In this case, do not guess or try to fill in missing digits. Instead, contact your bank directly and provide your name and other identifying information. They will confirm your account number for you.
If you have an older check from an account you no longer use, the account number on that check is no longer valid. Do not use it for any transaction. If you need the account number for a closed account (for example, to track down an old payment), call your bank and explain the situation. They can look up the closed account and provide the number if needed.
If you are trying to read a check written to you by someone else, you only need the routing number and account number if you are depositing it. The account number on that check belongs to the person who wrote it, not to you. Your bank will not need it for the deposit process.
Frequently Asked Questions
Is my account number the same as my routing number?
No. Your routing number identifies your bank; your account number identifies your specific account at that bank. They are always different numbers in different positions on the check. All customers at your bank share the same routing number, but each account has its own 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. Banks require additional verification, such as your PIN, password, or signature. However, you should still protect your account number and not share it with people you do not trust. Use it only for legitimate transactions like direct deposit or bill payments.
What if I write down my account number wrong when setting up direct deposit?
If you enter an incorrect account number, the deposit will either be rejected or sent to the wrong account. Your employer will be notified of the rejection, and you can correct it and resubmit. If the money went to the wrong account, contact your employer and your bank immediately to trace and recover it.
Do I need my account number to deposit a check into my account?
No. When you deposit a check at an ATM or through mobile deposit, you only need to photograph or insert the check. The bank reads the routing and account numbers from the check itself using the magnetic ink. You do not need to enter them manually.
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 move or change branches. The routing number might change depending on which branch processes your account, but your account number remains yours as long as the account is open.