Where to find your account number on a check
Your checking account number is the second set of numbers printed on the bottom left of any check you have. It comes after your bank's routing number and before the check number on the far right. The account number is usually 10 to 12 digits long, though this varies by bank.
If you have a checkbook, pull out any check and look at the bottom. You will see three groups of numbers separated by colons or special symbols. The middle group is your account number. Write it down exactly as it appears — do not add or remove any digits.
The order is always: routing number, then account number, then check number. If you are unsure which is which, your bank's name is printed at the top of the check, and you can call them to confirm you have identified the right numbers.
Key Takeaways
- Your account number appears on the bottom of any check you own, between the routing number and the check number.
- Account numbers are typically 10 to 12 digits, but the exact length depends on your bank.
- Your bank's website, mobile app, or customer service line can show you the account number if you do not have a check available.
- When you provide your account number to someone else, always verify you copied it correctly before sending it.
Finding your account number online or by phone
If you do not have a check or prefer not to look at one, log into your bank's website or mobile app. Your account number is usually displayed on the main dashboard or account summary page. Some banks show it in full; others display only the last four digits for security and require you to click to reveal the complete number.
You can also call your bank's customer service line — the number is on the back of your debit card or on your bank's website. Have your identification ready. A representative can read your account number to you over the phone or direct you to where it appears in your online account.
Why banks print it on checks
The account number on your check is printed in a machine-readable format called MICR (Magnetic Ink Character Recognition). This allows banks to sort and process checks automatically. The routing number tells the banking system which bank holds the account; the account number tells that bank which specific account to debit.
This is why the order and format matter. If you transpose digits or leave one out, the check may be sent to the wrong account or rejected entirely. Always double-check before writing a check or providing your account number for a direct deposit or payment setup.
Difference between account number and debit card number
Your checking account number and your debit card number are not the same thing. Your debit card number is a 16-digit number printed on the front of your card. Your account number is shorter and appears only on checks and in your online banking.
When you set up direct deposit or authorize a payment from your checking account, you need the account number and routing number — not your debit card number. Debit card numbers are used for card transactions at stores and online retailers. The two numbers serve different purposes and should not be confused.
What to do if you cannot locate your account number
If you have lost your checks, do not have online access, and cannot reach your bank by phone, visit a branch in person with your ID. A teller can provide your account number immediately. Bring a government-issued photo ID such as a driver's license or passport.
If you are setting up direct deposit for payroll or a refund and need your account number right away, calling your bank is the fastest option. Most customer service lines are open during business hours and on weekends, depending on the bank. Have your Social Security number or other identifying information ready.
Keeping your account number secure
Your account number is semi-public information — it appears on every check you write, and anyone who receives a check from you can see it. However, you should still treat it with care. Do not share it via email or text unless you initiated the contact and trust the recipient.
When you provide your account number for direct deposit, bill pay, or a refund, verify that you are communicating with a legitimate organization. Scammers sometimes pose as banks or government agencies to collect account numbers. If you are unsure, hang up and call the organization directly using a number from their official website or a bill you trust.
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. Both appear on your checks, with the routing number first and the account number second. You need both numbers to set up direct deposit or authorize a payment from your account.
Can someone access my account if they have my account number?
Your account number alone is not enough to access your account or withdraw money. A person would also need your routing number, and even then, most transactions require additional verification such as a password, PIN, or signature. However, do not share your account number unnecessarily, as it is one piece of information a scammer could use.
Why do some banks show only the last four digits online?
Banks hide the full account number as a security measure. If your phone or computer is compromised, an attacker would see only partial information. You can usually click a button or toggle to reveal the full number when you need it for a transaction.
What if the numbers on my check look smudged or unclear?
Request a new checkbook from your bank. Smudged MICR numbers can cause checks to be rejected or routed incorrectly. Your bank can reprint checks at no cost or a small fee. In the meantime, use your online banking or call your bank to confirm your account number.