A routing number is a nine-digit code that tells the banking system which bank holds your checking account
Every bank in the United States has a routing number, also called an ABA routing number or routing transit number. When you send money from your account to someone else's account—whether through a wire transfer, direct deposit, or automatic bill payment—the routing number tells the receiving bank's computer system which bank to pull the money from. Without it, the payment would not know where to go.
The routing number is not secret. It is printed on the bottom left of every check you write, and you can find it on your bank's website or by calling customer service. You share it freely whenever you set up direct deposit at a job, arrange an automatic payment, or ask someone to send you money via bank transfer.
Key Takeaways
- A routing number is a nine-digit code specific to your bank that directs money to the correct financial institution.
- The routing number appears on the bottom left of your checks, right before your account number.
- You need your routing number and account number together to receive direct deposits, wire transfers, and automatic payments.
- Different branches of the same bank usually share one routing number, so the number does not change if you move to a different branch location.
- The routing number is not confidential; you can share it without risk because it only works with your account number to move money.
Where to find your routing number
The easiest place to find your routing number is at the bottom left corner of any check you have written. The nine digits appear between the bank's symbol on the left and your account number on the right. If you do not have checks, log into your bank's website or mobile app—most banks display the routing number in the account details section, sometimes labeled "Bank Information" or "Account Settings."
You can also call your bank's customer service line and ask for your routing number. Have your account number ready when you call. If you bank at a large national bank like Chase, Bank of America, or Wells Fargo, you can search online for "[bank name] routing number" and find it within seconds, though you should verify it matches your specific branch location.
How routing numbers work in practice
When your employer sets up direct deposit, they ask for your routing number and account number. They send both pieces of information to their payroll processor, which then sends your paycheck to your bank using the routing number as an address. The routing number tells the payroll processor's bank, "Send this money to Chase Bank" (or whatever your bank is), and then your account number tells Chase which customer account within that bank should receive the deposit.
The same process happens when you set up an automatic bill payment through your bank's website. You enter the routing number and account number of the company you are paying, and your bank uses that information to send the payment to the correct place. If you wire money to a friend, you provide their routing number and account number so the wire goes to their bank, not someone else's.
Routing numbers versus account numbers
Your routing number identifies your bank. Your account number identifies your specific account at that bank. Think of it like an address: the routing number is the city and bank name, and the account number is your house number on that street. You need both pieces of information for any transfer to work correctly.
A large bank like Chase may have the same routing number for all its branches in a region, even though each branch has thousands of customers with different account numbers. If you move to a different Chase branch, your routing number usually stays the same, but your account number never changes—it is tied to your specific account, not to a location.
Why routing numbers matter for refunds and payments
If you are waiting for a tax refund, stimulus payment, or insurance refund to arrive by direct deposit, the government agency or insurance company needs your routing number and account number to deposit the money into your bank account. If you provide the wrong routing number, the money may go to the wrong bank entirely, and you will have to contact the agency to correct it and resubmit.
The same applies to business refunds, vendor payments, or any other money coming into your account. A wrong routing number is one of the most common reasons a refund gets delayed or sent to the wrong place. Double-check both numbers before you submit them, especially when setting up direct deposit for the first time.
Security and sharing your routing number
Your routing number is safe to share. It is printed on every check you write and is not considered confidential information. Someone who knows only your routing number cannot access your account or move money out of it—they would also need your account number, and even then, they would need authorization from your bank to initiate a transfer.
Your account number is more sensitive than your routing number, but even together they are not enough for someone to drain your account. Banks require additional verification before processing transfers, especially large ones. If you are concerned about a transfer you did not authorize, contact your bank immediately and they can reverse it or investigate.
What to do if you cannot find your routing number
If you have lost your checks and cannot access your bank's website, call your bank's customer service number—it is usually on the back of your debit card or on your bank statement. Have your account number and a form of identification ready. Customer service can give you your routing number over the phone in under a minute.
If you bank at a credit union instead of a bank, the process is the same: they have a routing number, and you can find it on your checks, on their website, or by calling. Credit unions use the same routing number system as banks, so the information works the same way.
Frequently Asked Questions
Can I use the same routing number for multiple accounts at the same bank?
Yes. If you have a checking account and a savings account at the same bank branch, they share the same routing number. The account number is what distinguishes between them. When you set up a transfer between your own accounts, you provide the routing number once and then specify which account number you are sending to.
What happens if I give someone the wrong routing number?
The money will be sent to the wrong bank. The sending bank will eventually notice the error and return the funds to the sender, but this can take several days or weeks. Contact the person or organization that sent the money and provide the correct routing number so they can resubmit the transfer.
Do I need a routing number to receive a wire transfer?
Yes. Wire transfers require both your routing number and account number. Some banks also ask for your full name and address to confirm the account. Make sure you provide the correct routing number for your specific bank, not a general number you found online, because wire transfers cannot be easily reversed if sent to the wrong place.
Is my routing number the same at every branch of my bank?
Usually yes, but not always. Most large banks use one routing number for all branches in a region or state. However, some banks assign different routing numbers to different branches or different types of accounts. Check your checks or your bank's website to confirm the routing number for your specific branch and account type.
Can I look up someone else's routing number?
Yes, if you know which bank they use. You can search online for "[bank name] routing number" and find it. However, you would still need their account number to send them money, and they would need to provide that to you directly. Routing numbers are public information, but account numbers are not.