Your account number is the second set of digits on the bottom left of your check, between the routing number and the check number
The bottom of every check contains three separate numbers printed in magnetic ink. Reading left to right, you see the routing number first (nine digits), then your account number (typically 10 to 12 digits), then the check number on the far right. Your account number identifies which specific account at your bank the check draws from. It is not secret information — it appears on every check you write, so anyone who receives a check from you can see it.
The account number is always the middle set of numbers in that three-part sequence. It will be longer than the routing number and longer than the check number. If you have multiple accounts at the same bank, each one has its own account number, even though they share the same routing number.
Key Takeaways
- Your account number is the middle set of digits on the bottom of your check, between the nine-digit routing number and the check number.
- Account numbers are typically 10 to 12 digits long and identify your specific account, not your bank.
- The account number appears on every check you write and is not confidential information.
- If you cannot read the printed numbers clearly, your bank can provide your account number by phone, online, or in person.
How to read the MICR line on your check
The three numbers at the bottom of your check are printed in a special format called MICR (Magnetic Ink Character Recognition). Banks use machines to read this line, which is why the numbers look slightly different from regular printed text. The numbers are always in the same order: routing number, account number, check number.
To find your account number, locate the bottom left corner of the check. You will see a colon or space separating each number. The first nine digits are your routing number. After that separator, the next 10 to 12 digits are your account number. The check number appears last, usually on the far right, and is typically the shortest of the three.
Some checks print the account number and check number in a different order depending on the bank's design, but the routing number always comes first. If you are unsure which number is which, your bank's customer service line can confirm it in seconds.
Why your account number matters for refunds and payments
When you set up direct deposit for a tax refund, insurance refund, or government payment, you will need to provide both your routing number and account number. These two pieces of information tell the paying agency exactly which bank and which account to deposit money into. Without the correct account number, the deposit will fail or go to the wrong account.
The account number is also required if you authorize someone to withdraw money from your account, set up automatic bill payments, or receive wire transfers. It is the specific identifier for your account — the routing number alone only identifies your bank, not your account within that bank.
Finding your account number if you do not have a check
If you do not have a physical check in front of you, your bank can provide your account number through several methods. Log into your online banking portal — your account number usually appears on the account overview page or in the account details section. You can also call your bank's customer service line and provide your name and identification; they will read your account number to you over the phone.
Visit your bank in person with a photo ID, and a teller can write down your account number for you. Some banks also print your account number on your debit card statement or on the back of your debit card itself. If you have a recent bank statement, your account number appears at the top of the page.
Protecting your account number
Because your account number appears on every check you write, it is not considered secret information in the way your PIN or password is. However, you should still avoid sharing it with unknown parties or posting it on public websites. If you are providing your account number to set up a direct deposit or payment, make sure you are communicating with an official representative of the organization requesting it.
Scammers sometimes pose as government agencies or banks to collect account numbers. Legitimate government agencies and banks will never ask for your account number via email or unsolicited phone call. If you are unsure whether a request is legitimate, hang up and call the organization directly using a phone number from their official website or a recent statement.
Common mistakes when reading your account number
The most common error is confusing the routing number with the account number. The routing number is always nine digits and comes first. Your account number is longer — usually 10 to 12 digits — and comes second. Transposing a single digit when writing down your account number will cause a deposit to fail or go to the wrong account, so double-check what you have written before submitting it.
Some people accidentally include the check number as part of their account number. The check number is the shortest of the three and appears on the far right. It changes with every check you write, so it is not your account number. If you are unsure, read the numbers aloud to someone at your bank and ask them to confirm which is which.
Frequently Asked Questions
Is my account number the same on all my checks?
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 on the far right. If you have multiple accounts at the same bank, each account has its own account number.
Can someone steal money from my account if they see my account number on a check?
Your account number alone is not enough to withdraw money. A person would also need your routing number, and even then, most banks require additional verification before processing a withdrawal. However, someone with both your account and routing number could potentially set up unauthorized automatic payments, so monitor your account regularly for unfamiliar transactions.
What if the numbers on my check are smudged or hard to read?
Call your bank's customer service line or log into your online account to find your account number. You can also visit a branch in person with your ID. Do not guess at the numbers — a single digit wrong will cause a deposit to fail or go to the wrong place.
Do I need my account number to receive a tax refund or stimulus payment?
Yes. When you set up direct deposit for a refund or payment, you will need to provide your routing number and account number. These tell the paying agency which bank and account to deposit the money into. You can find both numbers on any check from that account.