Your account number is the second set of digits printed on the bottom left of your check, after the routing number.
On a standard check, three groups of numbers appear along the bottom in magnetic ink. Reading left to right, you see the routing number first (nine digits), then your account number (usually 10 to 12 digits), then the check number (three to four digits on the right). Your account number identifies which specific account at your bank the check is drawn from. The routing number tells the receiving bank which bank to send the money to; the account number tells that bank which account within your bank should receive it.
The account number is the one you need when setting up direct deposit, arranging automatic bill payments, or receiving wire transfers. It is not the same as your debit card number, your PIN, or your Social Security number. Banks print it on every check you order, and it stays the same for the life of the account.
Key Takeaways
- Your account number is the middle set of digits on the bottom of your check, between the routing number and the check number.
- Account numbers are typically 10 to 12 digits long and identify your specific account within your bank.
- You need your account number for direct deposit setup, automatic payments, and wire transfers — not for writing checks to other people.
- Your account number is printed on every check and remains the same throughout the life of your account.
- Do not share your account number with people you do not trust, as it can be used to set up unauthorized transfers or payments.
How to locate your account number on a check
Look at the bottom left corner of any check. You will see three separate groups of numbers printed in a special magnetic ink. The first group, always nine digits, is your routing number. when ready after that comes your account number. Count the digits: if you see 10, 11, or 12 digits in the second group, that is your account number. The third group on the right, usually just three or four digits, is the check number — the sequential number printed in the upper right corner of the check as well.
If your checks are old or faded, the numbers may be hard to read. You can also find your account number on your bank statement, in your online banking portal, or by calling your bank's customer service line. Your bank can confirm the number in seconds.
When you need your account number versus when you do not
You need your account number when someone is sending money to you — for direct deposit from an employer, tax refunds, insurance payouts, or wire transfers from another person. You also need it to set up automatic bill payments from your account or to authorize recurring charges. In these cases, you are giving the receiving party permission to pull money from your account, so they need to know exactly which account to pull from.
You do not need to share your account number when you are writing a check to pay someone else. The person receiving the check does not need your account number; the bank processes the check using the routing number and account number printed on it automatically. Similarly, you do not need your account number to use your debit card, make a purchase online with a credit card, or withdraw cash from an ATM.
What someone can do with your account number
Your account number alone is not enough for someone to drain your account or make unauthorized purchases. However, combined with your routing number (both printed on every check), it is enough to set up unauthorized automatic payments or transfers from your account. This is why you should not share your account number with people you do not know or trust.
If you have given your account number to a business for a legitimate purpose — like your employer for direct deposit — and later want to stop them from accessing your account, contact your bank. You can revoke authorization for automatic payments and transfers through your online banking portal or by calling your bank directly. If you believe someone has used your account number without permission, report it to your bank when ready and ask them to monitor your account for suspicious activity.
Account number versus other numbers on your check
| Number | Length | Location | What it identifies |
|---|---|---|---|
| Routing number | 9 digits | First group at bottom left | Your bank and branch |
| Account number | 10–12 digits | Second group at bottom left | Your specific account |
| Check number | 3–4 digits | Third group at bottom left; also upper right corner | This individual check |
Finding your account number if you do not have a check
If you have not ordered checks yet or your checks are not in front of you, your account number is available in several places. Log into your online banking portal — most banks display your account number on the account overview or dashboard page. You can also find it on your monthly bank statement, usually printed near the top. Call your bank's customer service number on the back of your debit card, and a representative can read your account number to you over the phone.
Some banks also print your account number on your debit card itself, though not all do. If you need the number urgently and cannot access online banking, calling your bank is the fastest route — they can confirm it in under a minute.
Frequently Asked Questions
Is my account number the same as my routing number?
No. Your routing number (nine digits) identifies your bank and branch. Your account number (10–12 digits) identifies your specific account within that bank. Both appear on your check, but they serve different purposes. You need both together to set up direct deposit or automatic payments.
Can someone steal money from my account if they only have my account number?
Not with just the account number alone. However, if they also have your routing number — both of which are printed on every check — they could potentially set up unauthorized automatic payments or transfers. If you suspect misuse, contact your bank when ready to freeze the account or revoke authorization for automatic transactions.
Do I need to give my account number to someone I am writing a check to?
No. When you write a check, the bank processes it using the routing and account numbers already printed on the check. The person receiving the check does not need your account number. Only share your account number when someone is sending money to you or setting up automatic payments from your account.
What if I cannot read the numbers on my check?
Check your bank statement, online banking portal, or call your bank's customer service line. Your account number is also printed on most debit cards. Your bank can confirm the number when ready over the phone if you need it right away.
Does my account number change if I order new checks?
No. Your account number stays the same for the life of your account, even if you order new checks multiple times. The only number that changes is the check number, which increments with each new check you order.