A routing code tells the banking system which bank to send your money to
A routing code (also called a routing number or ABA number) is a nine-digit code that identifies your specific bank or credit union. When you send money to someone else's account — whether through a wire transfer, direct deposit, or automatic bill payment — the routing code tells the financial system exactly which institution holds that account. Without it, the money would have nowhere to go.
Think of it like a postal address for your bank. Your account number is like the apartment number; the routing code is the street address. Together, they make sure money lands in the right place.
Every bank and credit union in the United States has its own routing code. Large banks may have multiple codes if they operate different divisions or acquired other banks. The code is assigned by the American Bankers Association (ABA), which is why you'll sometimes hear it called an ABA routing number.
Key Takeaways
- A routing code is a nine-digit number that identifies your bank or credit union, and you need it whenever you receive money from an employer or government agency.
- Your routing code appears on the bottom left of your checks, and you can also find it on your bank's website or by calling customer service.
- The routing code is different from your account number — the code identifies the bank, while the account number identifies your specific account within that bank.
- If you give someone the wrong routing code, the money may go to the wrong bank, and you'll need to contact both banks to recover it.
Where to find your routing code
The easiest place to find your routing code is on a check from your account. Look at the bottom left corner — the first nine digits are your routing code. The next set of digits is your account number.
If you don't have checks, log into your bank's website or mobile app. Most banks display the routing code in the account details or settings section. You can also call your bank's customer service line and ask for your routing code — they'll give it to you over the phone.
Some banks print the routing code on statements or deposit slips as well. If you're opening a new account, the bank will provide it to you in your welcome materials.
When you need to provide your routing code
You'll need your routing code whenever someone or an organization needs to deposit money directly into your account. The most common situations are direct deposit from your employer, government payments like Social Security or tax refunds, and automatic transfers from other accounts.
You also need it if you're setting up automatic bill payments through your bank, or if you want to receive money from someone using an online payment service that transfers funds to a bank account. Some peer-to-peer payment apps ask for it too, though many now use just your account number.
You do not need your routing code to spend money from your account — only to receive deposits into it. If someone is sending you money and asks for your routing code, that's a normal request.
Routing code versus account number
These two numbers work together but do different jobs. Your routing code identifies which bank holds your account. Your account number identifies your specific account within that bank.
Using the postal address comparison: the routing code is the street address (which bank), and the account number is the apartment number (which account at that bank). You need both pieces of information for money to reach the right place.
If you give someone only your account number without the routing code, they won't know which bank to send the money to. If you give them only the routing code without the account number, the money will go to your bank but not to your account. Both pieces are required.
What happens if you provide the wrong routing code
If you give someone an incorrect routing code, the money will be sent to a different bank. Depending on the situation, it may end up in someone else's account, or the transfer may be rejected and returned to the sender.
If money does go to the wrong place, you'll need to contact your bank and the other bank involved to trace it and get it back. This can take several days or longer. The process is called a reversal or a recall, and it requires documentation from both institutions.
To avoid this problem, double-check the routing code before you give it out. If you're unsure, verify it directly with your bank rather than relying on a number someone else provided.
Routing codes for different types of accounts
Most checking and savings accounts at the same bank share the same routing code. However, if you have accounts at multiple banks, each bank has its own routing code.
Credit unions also have routing codes, and they work the same way as bank routing codes. If you have a credit union account, you can find your routing code the same places you would at a bank — on checks, on the website, or by calling.
If you move money between your own accounts at different banks, you'll need the routing code for the bank you're sending money to, not the bank you're sending it from.
Routing codes and online banking security
Your routing code is public information — it's printed on your checks, which you may give to many people. It is not a secret like your PIN or password. Knowing your routing code alone does not let someone access your account or take money from it.
However, combined with your account number, it does identify your account. For this reason, you should not share your full account number with people you don't trust, even though sharing your routing code is safe. Be cautious about where you enter this information online — only use websites and apps you recognize and trust.
Frequently Asked Questions
Can I use the same routing code for all my accounts?
If all your accounts are at the same bank, yes — they share one routing code. If you have accounts at different banks or credit unions, each institution has its own routing code. You'll need to use the correct code for whichever bank the money is going to.
What if my bank merged with another bank?
After a merger, your account may keep its original routing code, or your bank may assign you a new one. Contact your bank to confirm which routing code to use. If you have automatic deposits or payments set up, check with your employer or the organization sending the money to make sure they have the current code.
Do I need a routing code to withdraw money from an ATM?
No. You only need your debit card and PIN to use an ATM. The routing code is only for deposits and transfers between accounts. ATMs identify your account through your card and PIN, not through a routing code.
Is my routing code the same at every branch of my bank?
Yes. All branches of the same bank share the same routing code. The routing code identifies the bank itself, not a specific branch location. It doesn't matter which branch you opened your account at or which one you visit.
What should I do if I accidentally gave someone the wrong routing code?
Contact your bank right away and explain the situation. If the money hasn't been sent yet, the sender can correct it before the transfer goes through. If it's already been sent, your bank can help you trace it and work with the other bank to recover it, though this takes time.