Your account number is printed on the bottom left of your checks, or you can find it online through your bank's website or app
The easiest place to locate your bank account number is the bottom of a check from your account. Look at the left side of the bottom line — you'll see a series of numbers. The account number is typically the second set of digits, after the routing number. If you don't have checks handy, log into your bank's website or mobile app, go to your account details or account summary, and the account number will be listed there. You can also call your bank's customer service line and provide your name and identifying information to have them read it to you.
When you need this number for a refund, payment, or direct deposit setup, make sure you're copying it correctly — one wrong digit will send money to the wrong place or cause the transaction to fail. Some banks display it as a full number; others break it into groups. Write down exactly what you see, including any leading zeros.
Key Takeaways
- Your account number appears on the bottom left of your checks, after the routing number.
- You can view your account number by logging into your bank's website or app under account details or account summary.
- Calling your bank's customer service line and providing identification will get you the number read aloud if you can't locate it yourself.
- Copy the account number exactly as it appears, including any leading zeros, to avoid payment routing errors.
- Never share your full account number with anyone except your bank or a trusted organization processing a refund or payment you initiated.
Finding it on a physical check
If you have a checkbook, this is the fastest method. Open a check and look at the bottom. You'll see three separate groups of numbers printed in magnetic ink. The first group (usually nine digits) is the routing number. The second group is your account number, which can range from 8 to 17 digits depending on your bank. The third group is the check number.
Write down only the account number — the middle set of digits. Don't include the routing number or check number. If the account number has leading zeros (zeros at the start), include them exactly as printed. These zeros matter for processing refunds and direct deposits.
Finding it online through your bank
Log into your bank's website using your username and password. Look for a section labeled "Accounts," "Account Details," "Account Summary," or "My Accounts." Click on the specific account you want the number for — if you have multiple accounts, make sure you're looking at the right one.
Your account number should display on this page. Some banks show it in full; others mask most of the digits for security and show only the last four. If you see only the last four digits, you'll need to call the bank or use their mobile app, which sometimes displays the full number. Copy the number exactly as shown, including any dashes or spaces your bank uses in its display format — though when you submit it to a refund processor or government agency, remove spaces and dashes unless instructed otherwise.
Finding it through your bank's mobile app
Open your bank's mobile app and log in. Navigate to your account list or dashboard. Tap on the account you need the number for. The account number is usually displayed prominently on the account details screen, sometimes labeled as "Account Number" or "Account ID."
Mobile apps often show the full account number without masking, making them a reliable source. Take a screenshot or write it down carefully. If the app shows it with dashes or spaces, note whether those are part of the actual number or just formatting — your bank's website or a phone call can confirm.
Calling your bank directly
If you can't find your account number online or on a check, call the customer service number on the back of your debit card or the number listed on your bank's website. Have your identification ready — the bank will ask for your name, date of birth, and possibly the last four digits of your Social Security number or a PIN you've set up.
Once verified, the representative will read your account number to you. Ask them to spell it out or repeat it twice so you can write it down correctly. This method is slower than checking online, but it's reliable and confirms you're getting the right number for the right account.
What to do if you can't locate it
If you've checked your checks, your online account, your app, and called the bank and still can't find it, the problem is usually that you're looking at the wrong account or the wrong bank. Confirm which bank holds the account you need the number for — if you've switched banks or have multiple accounts, it's easy to get confused about which one is active.
If you're certain you have the right bank and account but still can't locate the number, ask your bank whether the account is active. Closed or frozen accounts sometimes don't display in the normal places. The bank can tell you immediately whether the account exists and is in good standing, and they can provide the number if it does.
Protecting your account number
Your account number is sensitive information. Share it only with your bank, a refund processor you contacted first, a government agency processing a refund you requested, or an employer setting up direct deposit. Don't post it on social media, email it to an address you're unsure about, or give it to someone who called you claiming to represent your bank.
If you've shared your account number with someone you don't trust, contact your bank immediately. They can monitor the account for unauthorized activity and, if needed, close it and open a new one. Real banks never call you asking for your account number — they already have it on file.
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 a check, with the routing number first (usually nine digits) and the account number second (typically 8 to 17 digits). You need both for direct deposits and wire transfers.
Can someone steal money using just my account number?
It's difficult but not impossible. Your account number alone doesn't let someone log into your account online, but combined with your routing number, it can be used to set up unauthorized automatic payments or ACH transfers. If you suspect misuse, contact your bank immediately. Federal law limits your liability for unauthorized transfers if you report them quickly.
Why does my bank show different account numbers in different places?
Usually it's just formatting — dashes, spaces, or leading zeros displayed differently on checks versus online. The actual number is the same. If two sources show genuinely different numbers, contact your bank to confirm which is correct. This sometimes happens if you have multiple accounts or if your account was recently transferred.
Do I need my account number to check my balance?
No. You can check your balance by logging into your bank's website or app with your username and password, or by calling the automated phone line. You only need your account number when you're sending or receiving money, setting up direct deposit, or authorizing someone else to access the account.
What if I'm waiting for a refund and the processor asks for my account number?
Provide it only if you initiated the refund request yourself. If someone contacted you out of the blue offering a refund and asking for your account number, it's likely a scam. Legitimate refunds from the government or a business come through channels you started — you filed a tax return, you returned an item, you requested a payment. Verify the processor's contact information independently before sharing any account details.