Your account number is in the bottom right section of the check, after the routing number

The account number appears in the lower right corner of your check, printed after the routing number. It is typically 10 to 12 digits long, though the exact length varies by bank. On most checks, you will see three groups of numbers along the bottom: the routing number on the left, your account number in the middle-right, and the check number on the far right.

The account number identifies which specific account at your bank the check is drawn from. When someone deposits or cashes your check, this number tells their bank exactly where to pull the money. It works together with the routing number — the routing number directs the payment to your bank, and the account number directs it to your account within that bank.

Key Takeaways

  • Your account number sits in the bottom right area of the check, between the routing number and the check number.
  • Account numbers are usually 10 to 12 digits, but length varies by bank and account type.
  • You can also find your account number on your bank statement, online banking portal, or by calling your bank.
  • Never share your account number with someone you do not trust, as it can be used to set up unauthorized transfers or payments.

How the three numbers at the bottom of a check are arranged

The bottom of a check contains three separate numbers in a specific order, reading left to right. The routing number (usually nine digits) appears first on the left. The account number (usually 10 to 12 digits) appears next in the center-right area. The check number (usually three to four digits) appears last on the far right.

These numbers are printed in a special machine-readable format called MICR (Magnetic Ink Character Recognition). This format allows banks to process checks quickly by machine. The numbers are printed in magnetic ink so that sorting equipment can read them automatically, even if the check is wrinkled, faded, or partially obscured.

Some checks also print these numbers in regular ink above the MICR line for your reference, though this is not required. If your check does not have the numbers printed twice, look only at the bottom line in the special magnetic ink format.

Other places to find your account number if your check is not available

If you do not have a check in front of you, your account number appears in several other places. Your bank statement — whether printed or online — shows your account number at the top or in the account information section. Your online banking portal displays it in your account settings or dashboard. You can also call your bank's customer service line and provide your name and identification to have them read it to you.

Your debit card does not display your account number. The card number is different from your account number, and sharing your card number does not give someone access to your account number. If you need your account number for a wire transfer, direct deposit setup, or automatic payment, use one of the sources above rather than trying to derive it from your card.

Why you should not share your account number carelessly

Your account number, combined with your routing number, is enough information for someone to set up unauthorized transfers out of your account or to create fraudulent checks in your name. You should share these numbers only with people and organizations you trust — your employer (for direct deposit), your landlord (for rent payments), or established financial institutions.

Scammers sometimes pose as your bank or a utility company and ask for your account number over the phone or email. Your bank will never ask for your account number this way. If someone calls claiming to be from your bank and asks for account information, hang up and call your bank directly using the number on your statement or card.

If you believe someone has your account number and may misuse it, contact your bank when ready. They can monitor your account for suspicious activity, issue you a new account number, and help you dispute any unauthorized transactions.

What happens when you give your account number to someone

When you provide your account number to a legitimate organization — such as your employer for direct deposit or a utility company for automatic bill payment — that organization can initiate transfers to or from your account. The transfer goes through the Automated Clearing House (ACH) network, which processes millions of transactions daily between banks.

For ACH transfers to work, the receiving organization needs your account number, routing number, and account type (checking or savings). They do not need your PIN, password, or card number. This is why your account number alone is sensitive information — it is part of what is needed to move money.

You can revoke authorization for ACH transfers at any time by contacting your bank or the organization making the transfer. If an unauthorized transfer occurs, you have the right to dispute it with your bank, and the bank must investigate within a set timeframe.

Differences between account numbers on personal and business checks

Personal and business checks use the same format at the bottom — routing number, account number, and check number in the same positions. The account number itself may be different lengths depending on your bank, but the placement is consistent. A business account number works the same way as a personal account number for routing purposes.

The main difference is in how the checks are printed and what information appears elsewhere on the check. Business checks often include the business name and address, while personal checks include your name and address. But the three numbers at the bottom follow the same standard format regardless of check type.

Frequently Asked Questions

Is my account number the same as my check number?

No. Your check number is the three or four digit number on the far right of the bottom line. Your account number is the longer number (10 to 12 digits) in the middle-right. The check number identifies that specific check; the account number identifies your account. Each check has a different check number, but all your checks share the same account number.

Can someone use my account number to steal money without my permission?

Yes, which is why you should not share it with people you do not trust. With your account number and routing number, someone can set up ACH transfers or create fraudulent checks. If this happens, contact your bank when ready. You have the right to dispute unauthorized transfers, and your bank must investigate.

What if I cannot find the numbers at the bottom of my check?

The numbers may be faint or worn. Try looking under bright light or using a magnifying glass. If the check is too old or damaged, call your bank or log into your online banking portal — both will show your account number without needing the check.

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

Yes. Your employer or the organization setting up the direct deposit needs both numbers. The routing number tells the system which bank to send the money to; the account number tells the bank which account within that bank. One without the other will not work.

Why is my account number different from my debit card number?

Your debit card number is a separate identifier used for card transactions. Your account number is used for ACH transfers, checks, and wire transfers. Banks keep these separate for security — if your card is compromised, your account number remains protected, and vice versa.