Your account number is the second set of digits on the bottom of your check

The bottom of a check has three groups of numbers separated by vertical lines. Reading left to right, they are: the routing number, your account number, and the check number. Your account number is always in the middle. It identifies which specific account at your bank the check is drawn from — so if you have two checking accounts at the same bank, each one has a different account number.

The account number is usually 10 to 12 digits long, though this varies by bank. It appears in the same spot on every check you have from that account. If you look at several checks from the same account, the account number will be identical on all of them.

You need your account number whenever you set up direct deposit, arrange automatic bill payments, or give someone your banking information to send you money. It is not secret information — people need it to send you funds — but it should not be shared casually or left visible in photos.

Key Takeaways

  • Your account number is the middle group of digits on the bottom of your check, between the routing number on the left and the check number on the right.
  • Account numbers are typically 10 to 12 digits long and identify your specific account at the bank.
  • The same account number appears on every check from that account.
  • You will need your account number to set up direct deposit, automatic payments, and wire transfers.

How to read the three number groups

The MICR line — the row of printed numbers at the bottom of the check — always appears in the same order. The first group is your bank's routing number (usually nine digits). The second group is your account number. The third group is the individual check number, which increases by one with each check in your book.

If you are looking at a check and unsure which is which, count the digit groups. The routing number is shortest and always nine digits. The check number is usually the shortest of the three. The account number sits between them and is the longest.

What the account number tells the bank

Your routing number tells the banking system which bank to go to. Your account number tells that bank which of its thousands of accounts to use. Together, they form a complete address for your money. Without the account number, the routing number alone is useless — it is like having a city name without a street address.

Different types of accounts at the same bank have different account numbers. Your checking account, savings account, and money market account each have their own number. This is why you cannot use a check from your savings account — checks are only printed for checking accounts, and they carry that account's specific number.

Finding your account number if you do not have a check

If you do not have a check handy, you can find your account number in several other places. Your bank statement lists it at the top or in the account information section. Your online banking login usually displays it in the account details or dashboard. You can also call your bank's customer service line and ask — they will verify your identity and read it to you.

Your debit card does not print your account number on it, so that is not a place to look. Some banks print it on statements or correspondence, but not all do.

When you need to give out your account number

You will need to share your account number when someone is sending you money directly. This includes setting up direct deposit from an employer, receiving a tax refund, arranging automatic bill payments to a company, or asking someone to wire you funds. In each case, you provide both your routing number and account number so the money reaches the right place.

You do not need to share your account number just to receive a check from someone — they only need your name and mailing address. You also do not need to share it to use your debit card, pay a bill by mail, or make a purchase online.

Protecting your account number

Your account number is not as sensitive as your PIN or online banking password, but it is still part of your banking information. Do not post photos of checks on social media or send images of checks through unsecured channels. If you are mailing a check to someone, the account number is visible on it, but that is unavoidable — the recipient needs to see it.

If you suspect someone has your account number and you did not authorize them to have it, contact your bank. They can monitor the account for unauthorized activity and issue you a new account number if needed, though this usually means getting new checks printed.

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 within that bank. Both appear on your check, but in different positions — routing number first, account number second.

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

They would need both your account number and routing number to set up a transfer, and most banks require additional verification. Having just the account number alone is not enough to withdraw funds. If you are concerned, contact your bank.

Why is my account number different from my check number?

Your account number stays the same for the life of the account. Your check number changes with each check you write — it is just a way to track individual checks you have issued. The account number is what matters for banking purposes.

Do I need my account number to use my debit card?

No. Your debit card works through a different system. You need your account number only when setting up direct deposits, automatic payments, or wire transfers — not for everyday card use.