The account number is the second set of digits on the bottom left of your check, printed between the routing number and the check number
Your account number appears in the MICR line—the row of numbers printed in magnetic ink at the bottom of every check. It sits in the middle position: routing number first (on the far left), account number second, check number third (on the far right). The account number is usually 10 to 12 digits long, though length varies by bank.
You need this number when you set up direct deposit, receive wire transfers, or give payment instructions to someone who will deposit a check on your behalf. Banks also use it to match incoming deposits to the right account when the routing number alone is not enough to identify where the money should go.
If you cannot read the MICR line clearly—the ink is faded, smudged, or the check is old—your bank statement or online banking portal will show your account number. You can also call your bank's customer service line and confirm it by providing your name and the last four digits of your Social Security number or another form of ID.
Key Takeaways
- The account number is the middle set of digits in the MICR line at the bottom of your check, between the routing number and check number.
- Account numbers are typically 10 to 12 digits, but the exact length depends on your bank.
- You can find your account number on your bank statement, in your online banking portal, or by calling your bank directly.
- Never share your account number with someone you do not trust, since it can be used to set up unauthorized transfers or payments.
- The account number alone is not enough to access your account; banks require additional verification before processing transactions.
How to read the MICR line on your check
The MICR line is always at the bottom of the check, printed in a special font designed to be read by bank machines. It contains exactly three groups of numbers, always in the same order from left to right: routing number, account number, check number. Each group is separated by a symbol that looks like a colon with extra marks (⊢ ⊣).
To find your account number, locate the middle group. If your check reads something like 121000248 ⊢ 1234567890 ⊣ 0001, then 1234567890 is your account number. The first group (121000248) is your routing number, and the last group (0001) is the check number printed on the front of the check.
Some checks print the account number in a different location as well—sometimes in the upper right corner or along the top edge—but the MICR line version is the one banks use for processing. If you are reading a check image online or on your phone, zoom in on the bottom edge to see the MICR line clearly.
Where else to find your account number
If your checks are too old or damaged to read, or if you do not have a check in front of you, your bank keeps your account number on file in multiple places. Log into your online banking portal and look for account details, account information, or settings. Most banks display the full account number on the main dashboard or in a dedicated account summary page.
Your bank statement—whether printed or digital—also lists your account number, usually at the top of the first page or in a header section. If you receive statements by mail, check the upper left or upper right corner. Digital statements often show it in the account details section.
You can also call your bank's customer service number (printed on the back of your debit card or on your statement) and ask a representative to confirm your account number. Be ready to provide your name, date of birth, and the last four digits of your Social Security number or another form of ID. This is the safest way to get your account number if you are unsure whether you are looking at the right information.
Why banks need both the routing number and account number
The routing number tells the banking system which bank to send money to. The account number tells that bank which account within that bank should receive the money. Together, they form a complete address for your money.
Think of it like a mailing address: the routing number is the city and state, and the account number is the street address and apartment number. Without both, the money cannot reach you. This is why direct deposit forms, wire transfer requests, and ACH payment instructions all ask for both numbers.
Different banks can share the same routing number (especially large banks with multiple processing centers), so the account number is what actually distinguishes your account from thousands of others at the same bank. This is also why you should never give out your account number to someone you do not know or trust—combined with a routing number, it can be used to set up unauthorized transfers.
What to do if you cannot find your account number
Start with your most recent bank statement, whether printed or digital. If you do not have a statement, log into your online banking portal using your username and password. Most banks display account information prominently on the home page or in an account details section.
If you do not have online access set up, call your bank using the number on your debit card or a recent statement. Have your ID ready. The representative will verify your identity and read your account number to you over the phone. This usually takes less than five minutes.
If you are trying to find someone else's account number (for example, to send them a refund), ask them directly. They can look at their own check, statement, or online banking portal and provide it to you. Do not try to extract it from a check image or other document without asking first.
Account numbers and security
Your account number is not secret in the same way your password is—it appears on every check you write and on statements you may share with others. However, it should not be treated as public information. Someone who has your account number and routing number together can potentially set up unauthorized ACH transfers or bill payments from your account.
Never share your account number via email, text message, or phone unless you initiated the contact and you are certain you are speaking with your bank. Legitimate banks will never ask you to confirm your account number by email or text. If someone contacts you asking for it, hang up or close the message and call your bank directly using the number on your card or statement.
If you believe your account number has been compromised, contact your bank immediately. They can monitor your account for suspicious activity, issue a new debit card, and help you set up fraud alerts or a credit freeze if needed.
Frequently Asked Questions
Is the account number the same as the number on my debit card?
No. Your debit card number is different from your account number. The debit card number is used for purchases and ATM withdrawals. Your account number is used for direct deposits, wire transfers, and ACH payments. Both are connected to the same account, but they are separate numbers.
Can someone access my account with just the account number?
Not without the routing number as well. Together, the two numbers form a complete banking address. However, someone with both numbers could potentially set up unauthorized transfers or bill payments. Never share your account number with people you do not trust, and monitor your account regularly for suspicious activity.
Why is my account number different from my check number?
The check number is just a sequential identifier printed on each individual check so you can track which checks you have written. Your account number identifies your entire account at the bank. Every check you write from the same account has the same account number but a different check number.
What if the MICR line on my check is hard to read?
Use your bank statement or online banking portal instead. Both will show your account number clearly. If you need it urgently and cannot access either, call your bank's customer service line. They can confirm it in seconds once they verify your identity.
Do I need my account number to deposit a check into my own account?
No. If you are depositing a check at an ATM or through mobile deposit using your own bank's app, you just need your debit card or login information. The bank already knows which account to deposit into. You only need to provide your account number when someone else is depositing money into your account or when you are setting up a transfer to another bank.