Your account number is the second set of digits on the bottom left of your check, after the routing number
The bottom of a check contains three groups of numbers printed in magnetic ink. Reading from 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 far right. Your account number identifies which specific account at your bank the check draws from. Banks use it to pull money from the correct account when the check clears.
The account number appears in the same location on every check from that account. If you have multiple accounts at the same bank, each will have a different account number, and the checks for each account will show that account's unique number.
Key Takeaways
- Your account number is the middle set of digits on the bottom of your check, between the routing number and the check number.
- Account numbers are typically eight to twelve digits long and appear in the same spot on every check from that account.
- You can also find your account number on your bank statement, in your online banking portal, or by calling your bank.
- The account number is necessary when setting up direct deposit, wire transfers, or automatic bill payments.
Reading the MICR line on your check
The bottom of your check contains what banks call the MICR line—MICR stands for Magnetic Ink Character Recognition. This line is printed in a special magnetic ink that machines can read automatically when checks are processed. The numbers are arranged in a specific order that every bank follows.
The first nine digits are your routing number. There is a colon or symbol after it. The next set of digits—usually eight to twelve numbers—is your account number. After your account number comes another symbol, then the check number on the far right. Some checks also print the account number and routing number in regular ink above or beside the MICR line for easier reading, but the MICR line is the official version the bank uses.
Finding your account number if your checks are not in front of you
You do not need a physical check to find your account number. Your bank statement shows it clearly, usually near the top or in a section labeled "Account Information." If you use online banking, log in and look for your account details—most banks display the account number prominently on the dashboard or in an account summary page.
You can also call your bank's customer service line and ask for your account number. Have your identification ready. Some banks will also email or text it to you if you request it through their app or website. Your debit card does not show your account number, so do not rely on that.
Why you need your account number for refunds and payments
When a refund is being sent to your bank account—whether from a tax return, insurance claim, or business payment—the sender needs both your routing number and account number to deposit the money into the correct account. Without the account number, the bank cannot route the deposit to you specifically.
The same applies when you set up direct deposit for a paycheck, authorize automatic bill payments, or request a wire transfer. Any transaction that moves money into or out of your account requires the account number so the bank knows which account to use. This is why you are often asked for both numbers together.
What to do if you cannot read the numbers clearly
If the MICR line on your check is smudged, faded, or damaged, do not guess at the numbers. Call your bank instead. They can confirm your account number over the phone or send you a replacement check. If you are trying to provide your account number to someone else and the check is illegible, use your bank statement or online banking instead—those sources are clearer and less prone to transcription errors.
If you are depositing a check and the MICR line is damaged, the bank's processing equipment may reject it. In that case, contact the person or organization that issued the check and request a replacement with a readable MICR line.
Account number length and format vary by bank
Most account numbers are eight to twelve digits long, but the exact length depends on your bank. Some banks use shorter numbers, others longer. The format is always the same on your checks—it appears in the same position on every check from that account—but you cannot assume another person's account number will be the same length as yours.
This variation is why you should always copy the account number directly from your check, statement, or online banking rather than trying to remember or reconstruct it. A single digit wrong will send a refund or payment to the wrong account, and recovering it can take weeks.
Frequently Asked Questions
Is my account number the same as my debit card number?
No. Your debit card number and account number are different. The debit card number is printed on the front of the card. Your account number appears only on checks and in your bank statements. Never use your debit card number when someone asks for your account number.
Can I use just the account number without the routing number?
No. The routing number tells the bank which branch or processing center to use, and the account number tells it which account within that bank. Both are required for any electronic transfer of money. You must provide both together.
What if I have multiple accounts at the same bank?
Each account has its own account number. The checks for each account will show that account's unique number on the MICR line. If you are setting up a refund or payment, make sure you are using the account number for the account where you want the money to go.
Is it safe to share my account number?
Your account number alone cannot be used to withdraw money from your account—a thief would also need your routing number and other information. However, only share your account number with organizations you trust, such as your employer for direct deposit or a utility company for bill payment. Never share it in response to an unsolicited email or phone call.