A routing number is a nine-digit code that identifies your specific bank or credit union
Your bank's routing number (also called a routing transit number or ABA number) tells the financial system which bank holds your account. When money moves between banks — whether you're setting up direct deposit, paying a bill online, or sending a wire transfer — the routing number is how the sending bank knows where to send it. Without it, the money has no address.
The routing number is not the same as your account number. Your account number identifies your specific account at that bank. The routing number identifies the bank itself. Together, they form the complete address for your money.
Routing numbers are assigned by the American Bankers Association and are unique to each bank branch or institution. A large national bank might have multiple routing numbers depending on where the account was opened or which division handles it. A small local credit union has one.
Key Takeaways
- Your routing number is a nine-digit code specific to your bank or credit union, not to your individual account.
- You need your routing number whenever you set up direct deposit, arrange automatic bill payments, or send money between banks.
- You can find your routing number on the bottom left of your checks, on your bank's website, or by calling your bank directly.
- Routing numbers are public information — sharing yours does not put your account at risk the way sharing your account number or PIN would.
Where to find your routing number
The easiest place to look is the bottom left corner of any check you have. The first set of numbers printed there is your routing number, followed by your account number, then the check number on the right.
If you don't have checks, log into your bank's website or mobile app. Most banks display your routing number in the account details or settings section. You can also call your bank's customer service line — they will give it to you over the phone, though you may need to verify your identity first.
Your bank's website often has a routing number lookup tool if you're not sure which one applies to you. This is especially useful if your bank has multiple routing numbers or if you opened your account at a branch that has since closed or merged.
Why you need it for refunds and payments
When a government agency, employer, or business needs to send you money by direct deposit or electronic transfer, they ask for your routing number and account number. This applies to tax refunds sent by the IRS, stimulus payments, unemployment benefits, insurance refund payouts, and payroll deposits.
The routing number tells the sending institution's bank which bank to contact. That bank then uses your account number to deposit the money into your specific account. Without the routing number, the transfer cannot be processed.
You also need your routing number when you set up automatic bill payments from your bank account, transfer money between your own accounts at different banks, or arrange a wire transfer. Any time money needs to move electronically from one financial institution to another, the routing number is required.
Routing numbers for different types of accounts
Banks, credit unions, and online banks all have routing numbers. If you have accounts at multiple institutions, each one has its own routing number — you cannot use one bank's routing number for another bank's account.
Some large banks assign different routing numbers based on the state where you opened your account or the type of account you hold. If you're unsure which routing number applies to your specific account, your bank's customer service can confirm it in seconds.
Credit unions use routing numbers the same way banks do. If you're a credit union member, your routing number will be on your checks or available through your credit union's website or phone line.
What happens if you use the wrong routing number
If you provide an incorrect routing number when setting up a direct deposit or transfer, the money will go to the wrong bank. The sending institution will typically catch the error and either reject the transfer or attempt to return it to the sender.
In some cases, the money may end up in another person's account at the wrong bank. Most banks have procedures to recover funds sent to the wrong account, but it can take several days or weeks. The safest approach is to double-check your routing number before submitting it, especially for large transfers like tax refunds or insurance payouts.
If you've already sent money with the wrong routing number, contact your bank immediately. They can sometimes stop the transfer before it processes, or they can help you trace where the money went and work with the other bank to recover it.
Routing numbers are public information
Your routing number is not sensitive information. It is printed on every check you write and is publicly available through your bank's website. Sharing your routing number alone does not put your account at risk.
However, do not share your full account number or PIN with anyone you don't trust. A scammer with both your routing number and account number could potentially set up unauthorized transfers or payments from your account. Your routing number by itself is safe to give out.
Frequently Asked Questions
Is my routing number the same as my bank's Swift code?
No. A Swift code is used for international wire transfers and is different from a routing number. Routing numbers are for domestic transfers within the United States. If you're sending money internationally, you'll need your bank's Swift code instead.
Do I need a different routing number for checking and savings accounts?
Usually not. Most banks use the same routing number for all account types at a given branch or location. However, some large banks may assign different routing numbers based on where you opened the account. Check with your bank if you're unsure.
What if my bank merged or changed names?
Your routing number may have changed. Contact your bank or check your most recent statement to confirm your current routing number. If you have old direct deposit information set up with the old routing number, update it to avoid missed payments or deposits.
Can I look up someone else's routing number?
Yes, routing numbers are public. You can search for any bank's routing number online using free lookup tools. However, you still need the account number to send money to a specific person, and that information is private.