A routing number is a nine-digit code that identifies your specific bank or credit union
When you give someone your checking account information to send you money, you are giving them three pieces: your bank's routing number, your account number, and your name. The routing number tells the sending bank which institution holds your account. Without it, the money does 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 their customer service line. It is the same for everyone who banks at that institution — your routing number is the same as your neighbor's if you both use the same bank.
The nine digits work like a postal address for your bank. The first four digits identify the Federal Reserve district where your bank operates. The next four digits identify your specific bank or credit union. The last digit is a check digit — a mathematical verification that the first eight digits are correct.
Key Takeaways
- Your routing number is a nine-digit code printed on the bottom left of your checks and identifies which bank or credit union holds your account.
- The routing number is the same for all customers at your bank, so it is not confidential information like your account number or PIN.
- You need your routing number whenever you set up direct deposit, arrange a wire transfer, or authorize automatic bill payments.
- If you switch banks, your routing number changes because it belongs to your new bank, not to you.
Where to find your routing number
The easiest place to find your routing number is the bottom left corner of any check from your account. It is the first set of nine digits, printed in a special magnetic ink that machines can read quickly.
If you do not have checks or prefer not to look at them, log into your bank's website or mobile app. Most banks display your routing number in the account details section, sometimes labeled "Bank Information" or "Account Information." You can also call your bank's customer service number — it is on the back of your debit card — and ask them to read it to you over the phone.
Some banks print the routing number on statements or debit cards, though not all do. If you cannot find it anywhere, your bank's website almost always has a "routing number lookup" tool where you can enter your state and city to find the number for your branch.
Why banks ask for your routing number
Your bank needs your routing number whenever money is moving into or out of your account through an electronic system. Direct deposit from your employer uses your routing number to send your paycheck to the right bank. When you set up automatic bill payments, the biller uses your routing number to pull money from your account on the scheduled date.
Wire transfers require your routing number so the sending bank knows which institution to contact. If you are receiving a wire transfer from someone else, you give them your routing number and account number so their bank can route the money correctly. ACH transfers — the slower, cheaper version of wire transfers that most people use for things like moving money between your own accounts — also need your routing number.
Some employers ask for your routing number when you set up direct deposit. Mortgage lenders need it when you authorize automatic monthly payments. Landlords may ask for it if you want to pay rent electronically. Any time money needs to find its way to your account through an automated system, the routing number is part of the address.
Routing numbers are different from account numbers
Your account number is unique to you. Your routing number is shared by everyone at your bank. Think of the routing number as the street address of your bank building, and your account number as your apartment number inside that building. Together, they tell the banking system exactly where your money goes.
Your account number is usually 8 to 12 digits long, though the length varies by bank. It appears on your checks, statements, and in your online banking portal. Unlike your routing number, your account number should be treated as sensitive information — you should not share it with people you do not trust, because someone with both your routing number and account number can set up unauthorized transfers from your account.
When you close an account and open a new one at the same bank, your account number changes but your routing number stays the same. If you switch to a different bank entirely, both numbers change.
What happens if you give the wrong routing number
If you provide an incorrect routing number, the money usually does not go through at all. The sending bank's system will reject the transfer because the routing number does not match any real institution in the Federal Reserve system. You will get a message saying the transfer failed, and the money will be returned to the sender within one to three business days.
In rare cases, a wrong routing number might route money to a different bank — for example, if you transpose two digits and the resulting number belongs to another real institution. If this happens, that bank will eventually notice the money does not match any account in their system and will send it back. This process can take several days or even weeks, so your money will be delayed but not lost.
The safest approach is to copy your routing number directly from your check or your bank's website rather than typing it from memory. Many banks also let you save routing numbers in your online banking system so you do not have to look them up each time.
Routing numbers for different types of accounts
Most checking and savings accounts at the same bank share the same routing number. Whether you have a basic checking account, a high-yield savings account, or a money market account, the routing number is the same because it identifies the bank, not the account type.
Credit unions use routing numbers the same way banks do, though credit union routing numbers are sometimes called "transit numbers." If you have an account at a credit union, you can find your routing number on your checks or by contacting the credit union directly.
Some large banks operate multiple branches or divisions that may have different routing numbers. If your bank has merged with another bank or operates under different brand names, different divisions might use different routing numbers. This is why it is always safer to look up your specific routing number rather than assuming all accounts at your bank use the same one.
International transfers and routing numbers
If you are receiving money from outside the United States, the sender may need additional information beyond your routing number. International transfers often require a SWIFT code (also called a BIC code), which is an eight or eleven-character code that identifies your bank internationally. Some countries use different systems entirely.
Your bank can provide your SWIFT code if you ask. You can also find it on your bank's website or by searching "[Your Bank Name] SWIFT code" online. For international transfers, you may also need to provide your full name, account number, and sometimes your bank's full address.
If you are sending money internationally, ask the recipient what information they need before you transfer anything. Different countries have different requirements, and providing incomplete information can cause delays or failed transfers.
Frequently Asked Questions
Is my routing number the same as my bank's main routing number?
Usually yes, but not always. Large banks sometimes operate multiple routing numbers for different regions or divisions. Check your checks or your bank's website to confirm your specific routing number rather than assuming it matches the main number you find online.
Can someone steal money from my account if they have my routing number?
Not with just your routing number alone. They would also need your account number. However, both pieces of information are printed on your checks, so you should not leave blank checks lying around or give them to people you do not trust.
Do I need a different routing number for each account I have?
No. All your accounts at the same bank — checking, savings, money market — share the same routing number. The routing number identifies the bank; your account number identifies which specific account within that bank.
What if my bank merged with another bank?
Your routing number may change after a merger, or it may stay the same depending on how the banks consolidated their systems. Your bank will notify you if your routing number changes and will update it in their system. Any automatic payments or direct deposits you have set up will continue to work because the bank updates the routing information on their end.
Can I use the same routing number for wire transfers and ACH transfers?
Yes. The same routing number works for all types of electronic transfers — wire transfers, ACH transfers, direct deposit, and automatic bill payments. You do not need different routing numbers for different transfer types.