Your account number is printed at the bottom left of your check, after the routing number

The bottom of a check contains three groups of numbers separated by colons or special symbols. Reading left to right, you see the routing number first (nine digits), then your account number (typically eight to twelve digits), then the check number on the right. Your account number is the middle group. It identifies your specific account at your bank, separate from every other account the bank holds.

The account number stays the same for every check you write from that account. If you have multiple accounts at the same bank — a checking account and a savings account, for example — each has its own account number, and each will print on the checks or statements for that account only.

Not all checks print the account number in the same position or format. Some banks print it in a slightly different order, and some use symbols instead of colons to separate the groups. If you cannot find three distinct number groups at the bottom of your check, look at your bank statement or log into your online banking — both will show your account number clearly labeled.

Key Takeaways

  • Your account number appears at the bottom of your check in the middle group of numbers, between the routing number on the left and the check number on the right.
  • The account number is eight to twelve digits long and identifies your specific account, not your bank.
  • Your account number remains the same on every check from that account and does not change when you order new checks.
  • If you cannot locate it on a check, your bank statement and online banking portal both display it clearly labeled.

The three number groups at the bottom of a check and what each one does

The bottom of a check is printed in MICR format (Magnetic Ink Character Recognition), a machine-readable code that allows banks to process checks automatically. The format is always the same: routing number, account number, check number, left to right.

The routing number (nine digits) tells the banking system which bank holds the account. It is the same for all customers of that bank in that region. The account number (eight to twelve digits) identifies your individual account within that bank. The check number (usually four to five digits) appears on the right and identifies that specific check. When you write a check, the bank uses all three numbers to debit the correct amount from the correct account and track which check initiated the transaction.

The numbers are printed in a special magnetic ink so that sorting machines can read them at high speed. You can read them with your eyes, but the bank's equipment reads them electronically. This is why the numbers must be printed in a specific font and position — if they are smudged, faded, or altered, the check may not process correctly.

Why banks print account numbers on checks and what information they reveal

Banks print your account number on checks because the check itself is the instruction to move money. When you hand a check to someone, they deposit it at their bank, which scans the MICR numbers and sends them through the clearing system. Without your account number printed on the check, the banking system would have no way to know which account to debit.

Your account number on a check is not secret information. Anyone who holds one of your checks can see it. This is why account numbers alone do not pose a major security risk — a person with only your account number and routing number cannot withdraw money without also having access to your bank's systems or your signature. However, you should still treat checks as you would any document containing financial information and not leave them lying around.

If you are concerned about sharing your account number, you can provide it directly to someone who needs it (an employer for direct deposit, for example) without giving them a physical check. Many banks also offer temporary or virtual account numbers for online transactions, though these are separate from the account number printed on your checks.

How to read the MICR line when the numbers are hard to see

If the numbers at the bottom of your check are faded, smudged, or printed in a way that is hard to read, start by looking at the leftmost group of nine digits — that is your routing number. Skip past it and look at the next group of digits before the check number on the right. That middle group is your account number.

If the print is too faint to read reliably, do not guess. Instead, log into your online banking and look for your account number in the account details or settings section. Most banks display it prominently on the dashboard or in a section labeled "Account Information." You can also call your bank's customer service line and ask them to read it to you — they will verify your identity first and then provide the number.

If you have ordered new checks and they have not arrived yet, your bank statement (whether printed or online) will show your account number. It usually appears at the top of the statement next to your account name or in a section labeled "Account Details."

Account numbers on different types of checks and accounts

Personal checks, business checks, and cashier's checks all print account numbers, but the account number belongs to the account being debited, not to the person writing the check. If you write a personal check from your checking account, your account number appears on it. If your employer writes a check from their business account, their account number appears on it, not yours.

If you have multiple accounts at the same bank — a checking account and a savings account, for example — each account has a different account number. Checks are only issued for checking accounts, so your savings account number will not appear on any check. However, if you set up a transfer between your accounts, you may need to provide both account numbers to your bank.

Some banks issue checks that look different from the standard format — for example, checks with images or unusual layouts. The MICR line at the bottom is always present and always in the same order: routing number, account number, check number. The position may shift slightly depending on the check design, but the sequence never changes.

What to do if you cannot find your account number anywhere

If you do not have a check in front of you and cannot access your online banking, call your bank's main customer service number. You will need to verify your identity by providing your name, date of birth, and possibly the last four digits of your Social Security number or a recent transaction amount. Once verified, the representative will read your account number to you.

You can also visit a branch in person with a photo ID and ask a teller to provide your account number. This is useful if you need it when ready or if you prefer to handle it face-to-face. Bring your ID and be prepared to answer security questions.

If you have set up direct deposit through an employer or government agency, that organization may have a record of your account number and routing number. You can contact them to confirm what they have on file, though they typically will not provide the number — they will only confirm that it matches what you provide.

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 within that bank. The routing number is the same for all customers of that bank in that region. Your account number is unique to you and changes if you open a new account.

Can someone take money from my account if they have my account number and routing number?

Not directly. They would also need your signature, access to your bank's systems, or authorization from you. However, you should not share these numbers with people you do not trust. Provide them only when necessary — for direct deposit, wire transfers, or other legitimate transactions you have initiated.

Will my account number change if I order new checks?

No. Your account number stays the same for the life of the account. New checks will print the same account number as your old ones. The only time your account number changes is if you close the account and open a new one.

What if the numbers on my check are printed in a different order than you described?

The MICR format is standardized across all U.S. banks, so the order is always routing number, account number, check number from left to right. If the numbers appear in a different order or format, contact your bank to confirm which number is which. Some banks may use symbols or spacing that looks different, but the sequence remains the same.

Do I need my account number to deposit a check?

No. When you deposit a check, the bank scans the MICR line and reads the account number from the check itself. You do not need to enter it. You only need to provide your account number when you are the one writing the check or when you are setting up a transfer or direct deposit.