The account number is the second set of digits on the bottom of your check
On the bottom left of any check, you will see three groups of numbers separated by vertical lines. The first group is your routing number (nine digits). The second group is your account number (typically eight to twelve digits). The third group is the check number itself.
The account number identifies your specific checking account at your bank. It is printed in the middle section of those three groups. If you are setting up a direct deposit, paying a bill online, or sending money to someone else, this is the number you will need to provide — along with your routing number.
Some checks also print the account number in the upper right corner for quick reference, though the authoritative version is always on the bottom line.
Key Takeaways
- Your account number appears as the middle set of digits on the bottom of your check, between the routing number and the check number.
- Account numbers are typically eight to twelve digits long and identify only your specific account, not your bank.
- You need both your routing number and account number together to set up direct deposit or authorize electronic payments.
- If you cannot read the numbers on a check, you can find your account number on your bank statement or by logging into your online banking.
How to read the three number groups at the bottom of a check
The bottom of a check contains a standardized format called MICR (Magnetic Ink Character Recognition). Reading from left to right, you will see:
Position 1 (leftmost): Routing number — nine digits that identify your bank and the Federal Reserve district where it operates.
Position 2 (middle): Account number — your unique identifier at that bank, usually eight to twelve digits.
Position 3 (rightmost): Check number — the sequential number printed on that individual check, typically four to five digits.
Each group is separated by a vertical line or symbol. The numbers are printed in a special magnetic ink so that check-processing machines can read them automatically. You can read them by eye just as easily, though the font may look unusual.
Why you need your account number and where to use it
Your account number is required whenever you need to move money electronically or authorize someone else to access your account. Common situations include setting up direct deposit for your paycheck, paying bills through your bank's online system, or giving your employer information for payroll.
You will also need it if you are sending money via wire transfer, setting up automatic payments to a creditor, or receiving a refund that the payer wants to deposit directly into your account. Insurance companies, the IRS, and state tax agencies all ask for account numbers when they are preparing to send you money electronically.
Your account number alone is not enough — you always need both the routing number and the account number together. The routing number tells the system which bank to send the money to; the account number tells the bank which account within that bank should receive it.
What to do if you cannot read the numbers on your check
If the numbers on the bottom of your check are faded, smudged, or hard to read, you have several other ways to find your account number without using the check itself.
The easiest method is to log into your online banking portal. Your account number is displayed on the account overview page, usually near the top. You can also find it on any bank statement — paper or electronic — printed near your account name. If you have a debit card, you can call the number on the back and ask customer service to read your account number to you over the phone.
Your bank's mobile app will also show your account number if you tap into your account details or settings. You do not need a physical check to locate this information.
The difference between account number and routing number
These two numbers work together but serve different purposes. Your routing number is the same for everyone who banks at your branch or bank — it identifies the financial institution itself. Your account number is unique to you alone and identifies your specific account within that bank.
Think of it this way: the routing number is like the address of the bank building, and the account number is like your apartment number inside that building. A wire transfer needs both pieces of information to reach the right money in the right place.
Your routing number will be the same on every check you order from that bank. Your account number will also stay the same for as long as you keep that account open. If you close the account and open a new one, you will receive a new account number, but the routing number for your bank remains unchanged.
Account numbers and security
Your account number is not a secret in the same way your PIN or password is. It is printed on every check you write, and anyone who receives a check from you can see your account number. For this reason, sharing your account number with a trusted payee (your employer, your bank, a government agency sending you a refund) is safe.
However, you should not share your account number with unknown callers, in response to unsolicited emails, or on websites you do not recognize. Scammers sometimes call claiming to be from your bank and ask for account information. Your bank will never call you asking for your account number — they already have it.
If someone has your account number and routing number but does not have access to your online banking or your debit card, their ability to harm your account is limited. They cannot withdraw money without authorization, but they could potentially set up fraudulent direct deposits or recurring payments. If you suspect unauthorized activity, contact your bank immediately.
Frequently Asked Questions
Is my account number the same as my debit card number?
No. Your debit card number is a separate 16-digit number printed on the front of your card. Your account number is the eight to twelve digit number on the bottom of your check. They are linked to the same account, but they are different numbers used for different purposes.
Can someone take money from my account if they have my account number?
Not directly. They would need both your account number and routing number, plus authorization to initiate a transfer or payment. They cannot simply withdraw cash or make purchases with just those two numbers. However, they could potentially set up unauthorized automatic payments, which is why you should monitor your account regularly.
What if I give my account number to the wrong person by mistake?
Contact your bank right away and explain the situation. Your bank can monitor your account for suspicious activity and can cancel or change your account number if necessary. Most banks will not charge you for this service if fraud has not yet occurred, though policies vary.
Do I need my account number to receive a tax refund?
Yes, if you want the IRS or your state tax agency to deposit your refund directly into your checking account. You will need to provide both your routing number and account number on your tax return. Direct deposit is faster than waiting for a paper check.
Where is the account number on a mobile check deposit?
When you photograph a check using your bank's mobile app, the app reads the account number from the bottom of the check automatically. You do not need to type it in yourself. The app extracts all three number groups (routing, account, and check number) from the image.