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 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 identifies which specific account at your bank the check is drawn from. It is not the same as your routing number, which identifies the bank itself.

The account number appears in two places on a check. The first is printed in the MICR line—that string of numbers at the very bottom in a special magnetic ink font. The second location is often printed in regular text in the upper right corner of the check, though some banks place it elsewhere or omit it from the printed check face.

Key Takeaways

  • Your account number is the middle set of digits in the MICR line at the bottom of the check, between the nine-digit routing number and the check number.
  • Account numbers are typically 10 to 12 digits long, but the exact length varies by bank.
  • The account number may also appear in printed text elsewhere on the check, usually the upper right corner, though not all banks print it there.
  • You need the account number when setting up direct deposit, wire transfers, or automatic bill payments.

How to read the MICR line correctly

The MICR line is the row of numbers printed at the bottom of the check in a distinctive font that looks slightly different from regular text. Reading from left to right, you will see: a symbol, nine digits (routing number), your account number, the check number, and another symbol at the end.

The routing number always comes first and is always nine digits. After those nine digits, the next string of numbers—which can be 10, 11, or 12 digits depending on your bank—is your account number. The check number follows after that. If you are unsure which digits belong to which number, count: nine digits for routing, then stop. Everything after that until you reach the final three or four digits is your account number.

Why the account number matters

Your account number is required whenever you need to receive money into this specific account or authorize payments out of it. Banks use the account number to route deposits to the correct account within their system. Without it, a direct deposit employer cannot send your paycheck to the right place, and a creditor cannot set up an automatic payment from your account.

The account number is also what you provide when you want to receive an ACH transfer (a bank-to-bank electronic transfer) or when you set up bill pay through your bank's website. It is specific to your account and should not be shared with people you do not trust, though it is generally safer to share than your full routing number plus account number together, which is equivalent to your full banking details.

Where else to find your account number if you do not have a check

If you do not have a check handy, your account number appears on your bank statement, usually at the top or in a summary section. You can also log into your online banking portal—most banks display your account number prominently on the dashboard or in an account details section. Your debit card does not print the account number, but calling your bank's customer service line and providing your name and identifying information will get you the number in seconds.

Some banks print the account number on the back of your debit card in small text, though this is less common. Your monthly statement is the most reliable backup source if you need the number and do not have a check available.

Common mistakes when identifying the account number

The most frequent error is confusing the routing number with the account number. Remember: routing number is always nine digits and comes first. If you count nine digits and stop, you have the routing number. The account number is what comes next.

Another mistake is including the check number as part of the account number. The check number is the shortest set of digits and appears last in the MICR line. Do not include it when you write down or provide your account number to someone else. If you are uncertain, ask your bank to confirm which digits are your account number before you provide it to an employer or creditor.

What to do if your account number is hard to read

If the MICR line on your check is faded, smudged, or difficult to read, contact your bank directly. They can confirm your account number over the phone or through your online account portal. Do not guess or estimate digits—a single wrong digit will cause a deposit or payment to fail or go to the wrong account.

If you have a stack of old checks and the numbers are illegible on all of them, order new checks from your bank. In the meantime, use your statement or online banking to find the account number. Banks will reprint checks at a small cost, and the new ones will have clear, readable MICR lines.

Frequently Asked Questions

Is my account number the same on every check I have from the same account?

Yes. Every check from the same account has the same account number printed on it. The only number that changes from check to check is the check number itself, which increments by one with each new check in the book.

Can someone use my account number to steal money from my account?

Your account number alone is not enough to withdraw money or make unauthorized transfers. A thief would also need your routing number and typically your PIN or online banking password. That said, do not share your account number with strangers—only provide it to employers, creditors, or institutions you trust.

What if I give someone the wrong account number by mistake?

If you provide an incorrect account number to an employer or creditor, the deposit or payment will fail or go to a different account. Contact the sender when ready and provide the correct account number. Most institutions can redirect the payment once you notify them of the error.

Do I need both the routing number and account number to receive a direct deposit?

Yes. Your employer needs both your routing number (which identifies your bank) and your account number (which identifies your specific account at that bank) to deposit your paycheck correctly. Both numbers appear on your check in the MICR line.