Your account number is the second set of digits on the bottom left of any check you have
The bottom of a check shows three separate numbers in a specific order from left to right: the routing number (nine digits), your account number (typically 10 to 12 digits), and the check number (usually three to four digits). Your account number sits between these two. If you have a check in front of you right now, look at the bottom left corner and find the middle set of numbers—that is your account number.
The account number identifies which specific account at your bank holds your money. It is different from your routing number, which identifies the bank itself. You need both pieces of information for direct deposits, wire transfers, and setting up automatic payments, but they serve different purposes.
If the numbers are hard to read because the check is old, faded, or damaged, you have other ways to find this information without ordering new checks.
Key Takeaways
- Your account number appears as the middle set of digits on the bottom of any check, between the routing number and check number.
- Account numbers are typically 10 to 12 digits long, though the exact length varies by bank.
- If you cannot read the number on a check, your bank statement, online banking portal, or a call to your bank will show it when ready.
- Never share your account number with someone who contacted you first—legitimate businesses and government agencies already have it on file.
Reading the MICR line on your check
The bottom of the check uses a special format called the MICR line (Magnetic Ink Character Recognition). Banks and check-processing machines read these numbers automatically, which is why they are printed in a specific font and position. The format is always the same: routing number, then account number, then check number.
The routing number comes first and is always nine digits. Your account number follows when ready after, with no space between them. This is where people sometimes get confused—the numbers run together, so you have to count carefully. Start counting after the nine-digit routing number ends, and the next digits are your account number.
If you are looking at a check and the print is faint or smudged, try holding it under bright light or using your phone's flashlight. The MICR ink is designed to be readable even when the rest of the check is worn, so this usually works.
Finding your account number without a check
If you do not have a check available or cannot read the one you have, your bank statement shows your account number at the top or in the account details section. Online banking portals display it prominently in your account settings or dashboard. You can also call your bank's customer service line—the number is on the back of your debit card or on your most recent statement—and they will read it to you over the phone.
Some banks print the account number on your debit card itself, usually on the front near your name. Check there first if you need the number quickly. If your card does not show it, the statement or online portal is the fastest route.
You do not need to order new checks just to find this number. The information is already in your bank's system and available through multiple channels.
What to do if you cannot find the account number on your check
Older checks sometimes have faded or illegible MICR lines. If you have tried holding the check up to light and the numbers still will not come clear, stop trying to read it and use one of the other methods instead. Spending 10 minutes squinting at a check is less efficient than logging into your online account or calling the bank.
If you have a stack of old checks and only need the account number once, grab any check from the stack—the account number does not change. All checks from the same account will have the same account number printed on them. If every check in your possession is illegible, move to your statement or online banking.
Protecting your account number
Your account number is sensitive information. Do not share it with someone who called you or emailed you first, even if they claim to be from your bank, the IRS, or a utility company. Legitimate organizations already have your account number on file and will not ask you to provide it to verify your identity.
It is safe to provide your account number to people you contact directly—your employer for direct deposit, a business you are paying, or your bank when you call them. The risk comes when you give it to someone who initiated the contact. If you are unsure whether a request is legitimate, hang up and call the organization directly using a phone number from their official website or your statement.
Your account number alone is not enough for someone to drain your account, but combined with other information it can be used for fraud. Treat it the way you would treat your Social Security number—share it when necessary, but do not volunteer it.
Account numbers for different types of accounts
Checking accounts, savings accounts, and money market accounts all have separate account numbers at the same bank. If you have multiple accounts, each one has its own number. Checks are only printed for checking accounts, so if you need the account number for a savings account, you will have to use your statement or online banking—there is no check to look at.
If you are setting up direct deposit or a wire transfer, make sure you are using the account number for the correct account. Using the wrong number will send the money to the right bank but the wrong account, and recovering it can take several days. Double-check the number before you submit the request.
Frequently Asked Questions
Is the account number the same as the check number?
No. The check number is the third set of digits on the bottom right of the check, usually three or four digits. Your account number is the middle set. The check number identifies that specific check, while the account number identifies your account. You need the account number for direct deposits and transfers, not the check number.
Can someone use my account number to steal money?
Your account number alone is not enough to access your account or move money. A thief would also need your routing number, and even then they would need additional verification depending on what they are trying to do. However, combined with other personal information, it can be used for fraud. Share it only with people and organizations you trust.
What if my check shows a different account number than my statement?
This is unusual and suggests either a printing error on the check or that you are looking at a check from a different account. Compare the account number on the check to the one shown in your online banking portal or on your most recent statement. If they do not match, contact your bank to clarify which number is correct.
Do I need my account number to deposit a check?
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 MICR line automatically and knows which account to credit. You do not have to type in your account number.
Will my account number change if I get new checks?
No. Your account number stays the same for the life of the account. New checks will have the same account number printed on them as your old checks. The account number only changes if you close the account and open a new one.