Your account number is the second set of digits on the bottom left of your check, printed between the routing number and the check number.

The bottom of a check contains three separate numbers in this order: routing number (nine digits), account number (typically 10 to 12 digits), and check number (usually four to five digits). Your account number identifies your specific bank account and is unique to you. It appears twice on most checks — once in the magnetic ink character recognition (MICR) line at the bottom and again in the upper right corner in regular print.

The MICR line is what bank machines read when processing checks. The numbers are printed in a special font and magnetic ink so sorting equipment can scan them automatically. If you look at the bottom of your check from left to right, you will see the routing number first, your account number second, and the check number last.

Key Takeaways

  • Your account number is the middle set of digits on the bottom of your check, positioned between the routing number and check number.
  • Account numbers are typically 10 to 12 digits long and are unique to your individual account at your bank.
  • The account number appears in two places on a check: in the MICR line at the bottom and in printed form in the upper right corner.
  • You need your account number when setting up direct deposit, making wire transfers, or providing banking information to employers or other organizations.

How the three numbers are arranged on your check

The MICR line at the bottom of your check always follows the same order. Starting from the left, you see the routing number (nine digits), then the account number (10 to 12 digits), then the check number (four to five digits). Some checks also print the account number in the upper right corner in regular numerals, making it easier to read without special equipment.

The spacing between these numbers is consistent across all checks from the same bank. If you are unsure which number is which, count the digits. The routing number is always exactly nine digits. Your account number will be longer — typically between 10 and 12 digits depending on your bank. The check number is usually the shortest, four to five digits.

Why you need to know your account number

Your account number is required for several common banking tasks. When your employer sets up direct deposit, they will ask for your routing number and account number. If you need to send or receive a wire transfer, the receiving bank will request both numbers. You may also need your account number when paying bills online, setting up automatic payments, or providing banking details to a financial institution.

The account number is what distinguishes your account from every other account at your bank. Two people at the same bank will have the same routing number but different account numbers. This is why providing only the routing number is not enough — the account number tells the bank exactly which account to deposit money into or withdraw from.

Reading the MICR line clearly

The MICR line uses a special font designed for machines to read quickly and accurately. The numbers are printed in magnetic ink, which allows sorting equipment to process checks at high speed. If the MICR line on your check is faded, smudged, or damaged, the check may not process correctly.

If you cannot read the MICR line clearly, you can find your account number on your bank statement, your online banking portal, or by calling your bank. Your bank can also print a new set of checks if the ones you have are damaged or illegible. Do not attempt to write in or alter the MICR line — banks will reject checks with handwritten numbers in that area.

Locating your account number if you do not have a check

If you do not have a physical check available, your account number appears in several other places. Log into your online banking account and look for your account details or account summary page — the account number is usually displayed prominently. Your monthly bank statement also lists your account number at the top or in the account information section.

You can also call your bank's customer service line and provide your name and identifying information. A representative can read your account number to you over the phone. Some banks also display your account number on your debit card, though this is less common. Your bank's mobile app typically shows your account number in the account details section as well.

Protecting your account number

Your account number is sensitive financial information. Do not share it with anyone unless you initiated the contact and trust the recipient. Legitimate banks and government agencies will never ask for your account number via email or unsolicited phone calls. If someone contacts you asking for your account number, hang up or delete the message and call your bank directly using the number on your statement or card.

When you provide your account number for direct deposit or bill payments, make sure you are communicating with the correct organization. Scammers sometimes pose as employers or utility companies to collect banking information. If you are unsure whether a request is legitimate, contact the organization directly using a phone number or website you know is real.

Frequently Asked Questions

Is my account number the same as my routing number?

No. Your routing number identifies your bank or credit union (nine digits), while your account number identifies your specific account at that bank (typically 10 to 12 digits). Both are needed for direct deposit and wire transfers, but they serve different purposes.

Can someone access my account if they have my account number?

Your account number alone is not enough to access your account or move money. A person would also need your routing number, and most banks require additional verification like a PIN, password, or security questions. However, treat your account number as sensitive information and do not share it unnecessarily.

What if the numbers on my check are unclear or smudged?

Contact your bank and request a replacement set of checks. Checks with damaged MICR lines may not process correctly. You can also find your account number on your bank statement or by logging into your online banking account while you wait for new checks to arrive.

Do I need both the routing number and account number for direct deposit?

Yes. Your employer needs both numbers to set up direct deposit correctly. The routing number tells the system which bank to send the money to, and the account number tells the bank which account within that bank should receive the deposit.