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

The bottom of every check shows three separate numbers in order from left to right: the routing number (9 digits), your account number (typically 10 to 12 digits), and the check number (usually 4 digits). Your account number is the middle one. It belongs only to you and identifies which specific account at your bank holds the money you are waiting for — whether that is a tax refund, insurance payment, business reimbursement, or government transfer.

If you do not have checks, you can find your account number on your bank statement, your debit card, your online banking portal, or by calling your bank's customer service line. Each method takes less than five minutes.

Key Takeaways

  • Your account number appears on the bottom left of checks, between the routing number and check number, and is typically 10 to 12 digits long.
  • Bank statements, debit cards, and online banking portals all display your account number if you do not have checks available.
  • You need both your routing number and account number to receive direct deposits of refunds and payments.
  • Your account number is unique to your account only and should not be shared with anyone except the organization sending you money.

Finding your account number on a check

Look at the bottom left corner of any check you have written or received. You will see a series of numbers printed in a special magnetic ink format. Read from left to right: the first nine digits are your routing number, the next 10 to 12 digits are your account number, and the final digits are the check number for that specific check.

The account number stays the same on every check from that account. The check number changes with each check you write or receive. If you are looking at an old check from years ago, the account number will still be correct — account numbers do not change unless you close the account and open a new one.

Finding your account number without checks

If you have no checks or cannot locate one, your bank statement shows your account number at the top or in the account summary section. Log into your online banking portal or mobile app, and the account number appears in the account details or account overview page. Some banks display it prominently; others require you to click into account settings.

Your debit card does not print the account number on the front, but your bank can tell you the account number if you call their customer service line with your card number and personal information. Most banks have a phone number on the back of your debit card. Have your Social Security number or PIN ready when you call.

Why you need both the routing number and account number

When you provide banking information to receive a refund or payment, you must give both numbers. The routing number tells the sending organization which bank to send the money to. The account number tells that bank which specific account within that bank should receive the deposit. Without both, the transfer cannot go through.

This is why tax refunds, insurance payouts, stimulus payments, and business reimbursements all ask for both pieces of information. If you provide only one, the money may be rejected or delayed while the sending organization tries to locate the correct account.

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 not share it with people or organizations you do not trust. Share it only with the government agency, insurance company, employer, or business that is sending you money.

If you are unsure whether an organization asking for your account number is legitimate, call the organization directly using a phone number from their official website or a bill you received. Do not use a phone number from an email or text message, as those could be fraudulent.

What to do if your account number changes

Your account number changes only if you close your current account and open a new one at the same bank or a different bank. If you have already provided your old account number to an organization sending you a refund or payment, contact that organization immediately and provide your new account number.

If a payment was sent to your old account after you closed it, the bank will typically return it to the sender. The sending organization will then need to reissue the payment to your new account. This process can add two to four weeks to your wait time, so updating your account information as soon as possible matters.

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 at that bank. Both appear on the bottom of your checks. The routing number comes first (9 digits), and the account number comes second (typically 10 to 12 digits).

Can someone take money from my account if they have my account number?

They would need both your account number and routing number, plus authorization from your bank. Having only your account number is not enough to withdraw money. However, do not share it unnecessarily. Give it only to organizations you trust to send money to your account.

What if I provide the wrong account number to receive a refund?

The money will go to the wrong account at your bank or to a different bank entirely. Contact the sending organization immediately with your correct account number. They can attempt to recall the payment or reissue it. The sooner you catch the error, the faster the correction can happen.

Do I need my account number to check my bank balance?

No. You can check your balance by logging into your online banking portal, calling your bank's automated line, or visiting an ATM. You will need your debit card PIN or online banking password, but not your account number.