The account number is the second set of digits on the bottom of your check
Your bank account number appears on the bottom left of a check, printed between two sets of numbers. It comes after the routing number and before the check number. On most checks, the account number is 10 to 12 digits long, though this varies by bank.
The bottom of a check always prints three separate numbers in this order: routing number, account number, check number. The account number identifies which specific account at your bank the check is drawn from. When someone deposits or cashes your check, the bank uses this number to know which account to pull the money from.
If you cannot read the printed numbers clearly, your bank statement shows your account number. You can also find it by logging into your online banking portal, calling your bank's customer service line, or visiting a branch in person.
Key Takeaways
- The account number is the middle set of digits on the bottom of a check, positioned between the routing number on the left and the check number on the right.
- Account numbers are typically 10 to 12 digits long, but the exact length depends on your bank.
- Your bank statement, online banking portal, and customer service line all display your account number if the check is unreadable.
- The account number tells the bank which specific account to debit when the check is processed.
Why the order matters: routing, account, check number
The three numbers at the bottom of a check serve different purposes, and they always appear in the same order. The routing number (leftmost) identifies which bank or credit union holds the account. The account number (middle) identifies your specific account within that bank. The check number (rightmost) is a sequential identifier for that individual check.
When a check is processed, the bank reads all three numbers. The routing number directs the check to the correct financial institution. The account number tells that institution which account to pull money from. The check number helps both you and the bank track which specific check was used for which transaction.
If any of these three numbers is wrong or illegible, the check may be rejected or delayed. This is why it matters to write clearly when you fill out a check by hand, and why you should verify the printed numbers if you are providing check information to someone else.
How to locate your account number if the check is damaged or faded
Printed numbers on checks fade over time, especially if the check has been wet, folded, or stored in direct sunlight. If you cannot read the account number on your check, several other sources will show it.
Your bank statement — whether paper or digital — displays your account number at the top or in the account details section. Log into your online banking portal and look for "Account Information" or "Account Details"; your account number will be listed there. You can also call your bank's customer service number (usually on the back of your debit card) and provide your name and Social Security number to confirm your account number over the phone.
If you have a debit card from the same account, the account number may also appear on the card itself, though not all banks print it there. Visiting a branch in person is another option — a teller can confirm your account number and print it for you if needed.
What happens if you give someone the wrong account number
If you provide an incorrect account number when writing a check or sharing banking information, the consequences depend on what went wrong. A check with a wrong account number will usually be rejected by the bank during processing, and the check will be returned to the person who tried to deposit or cash it. This delays payment but does not result in money going to the wrong account.
If you accidentally transpose two digits in your account number when giving it verbally or in writing to a business, that business may attempt a direct deposit or electronic transfer to a different account. Contact your bank immediately if this happens. Banks have procedures to reverse transfers sent to the wrong account, though the speed depends on whether the receiving bank cooperates and whether the money has already been withdrawn.
For this reason, it is safer to provide a voided check (a check marked "VOID" across the front) rather than just reciting your account and routing numbers. A voided check shows both numbers in their correct positions and cannot be cashed or deposited.
Account numbers are not the same as your routing number
Many people confuse the account number with the routing number because both appear on the check. They are not interchangeable. Your routing number is the same for everyone at your bank or credit union — it identifies the financial institution itself. Your account number is unique to you and identifies your individual account.
Think of it this way: the routing number is like the address of a bank branch, and the account number is like your mailbox number inside that branch. If you tell someone your routing number alone, they cannot send money to you because they do not know which account at that bank is yours. If you tell them your account number alone, they cannot send money because they do not know which bank to send it to.
Both numbers are needed for electronic transfers, direct deposits, and wire transfers. Checks require both as well, though the check itself serves as proof that you authorized the transaction.
Where the account number appears on different check formats
Most personal checks follow the standard layout: routing number, account number, check number printed along the bottom in that order. Business checks, cashier's checks, and traveler's checks may have slightly different layouts, but the account number is still present and serves the same purpose.
On a cashier's check (a check issued by the bank itself rather than by you), the account number may not be visible to you because the bank is the account holder. On a traveler's check, the account number is not used in the same way because traveler's checks are not drawn from a personal account.
If you are looking at a check from a business or organization, the account number shown belongs to that business or organization, not to you. When you deposit a check, the account number on that check tells your bank where to send the funds — to the account of the person or business who wrote the check.
Frequently Asked Questions
Is my account number the same on all my checks?
Yes. Every check from the same account will have the same account number printed on it. If you order new checks from your bank or a check printing company, they will print the same account number on all of them. The only number that changes is the check number, which increments with each new check.
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 even then, most banks require additional verification (a PIN, password, or signature) before processing a transaction. That said, do not share your account number unnecessarily. Provide it only to trusted sources like your employer (for direct deposit) or businesses you are paying intentionally.
What if I write a check and accidentally put the wrong account number?
If you handwrite a check and make a mistake with the account number, the safest approach is to void that check (write "VOID" across it) and write a new one. If the check has already been given to someone, contact them and ask them to destroy it. If it has been deposited, contact your bank to report the error.
Do I need my account number to set up direct deposit?
Yes. To set up direct deposit with your employer or another organization, you will need to provide both your routing number and your account number. The easiest way to provide both accurately is to give them a voided check, which shows both numbers in the correct positions.
Where is the account number on a mobile check deposit?
When you deposit a check using your bank's mobile app, you do not need to enter the account number manually. The app reads the numbers from the check image you upload. The account number on the check tells your bank which account to credit with the deposit.