A single checking account cannot have two different routing numbers at the same time
Each checking account is tied to exactly one routing number—the nine-digit code that identifies which bank branch holds your account. The routing number and account number work together as a pair. If you see two different routing numbers associated with what you think is the same account, one of these things is happening: you have opened a second account without realizing it, the bank has changed its routing number and you are looking at old and new numbers, or you are looking at routing numbers from two completely separate banks.
The routing number is not something you can change or customize for a single account. It is assigned by the bank based on where the account is held. If you move to a different branch or your bank merges with another, the routing number might change—but that change applies to the account as a whole, not to individual transactions or transfers.
Key Takeaways
- One checking account has one routing number; the pairing is permanent for that account at that bank.
- If you see two routing numbers, you likely have two separate accounts, or the bank changed its routing number after a merger or restructuring.
- Your bank's website or a call to customer service will show you the current routing number for each account you own.
- Old routing numbers stop working once a bank changes them, so using an outdated number will cause transfers to fail or be rejected.
Why you might think you have two routing numbers
The most common reason is that you have actually opened two accounts without keeping track of both. Many people open a savings account or a money market account at the same bank and forget about it, then later think they have two checking accounts. Each account—even at the same bank branch—gets its own routing number and account number combination.
A second reason is that your bank merged with another bank or changed its name. When this happens, the routing number sometimes changes. You might have old statements or old checks with the old routing number, and new statements or online banking showing the new one. Both numbers may still work for a short transition period, but eventually only the new one will be active.
A third reason is confusion between your bank's main routing number and a routing number for a specific branch or service. Some large banks publish multiple routing numbers for different regions or for wire transfers versus ACH transfers. However, these all connect to the same account—you do not choose which one to use for a particular transaction. The receiving bank's system determines which routing number to use based on the type of transfer.
How to find your actual routing number
Log into your bank's website or mobile app and look for account details or account information. The routing number is usually listed there alongside your account number. If you cannot find it online, call your bank's customer service line—the number is on the back of your debit card or on your monthly statement—and ask for the routing number for your checking account.
You can also find your routing number on a check. Look at the bottom left corner of any check from that account. The first set of numbers (usually nine digits) is the routing number. The second set is your account number. If you have checks from different years and they show different routing numbers, your bank has changed its routing number since those checks were printed.
If you have multiple accounts at the same bank, each one will have its own routing number. Write them down or save them in a note so you do not mix them up when setting up direct deposit, bill pay, or transfers.
What happens if you use the wrong routing number
If you give someone an old or incorrect routing number, the transfer will either be rejected outright or it will be sent to the wrong bank entirely. If it goes to the wrong bank, that bank will eventually return it to the sender, which can take several business days. Your money will not arrive on time, and you may face late fees if the transfer was meant to pay a bill.
For direct deposit (like paychecks or tax refunds), using the wrong routing number means your employer or the government agency will not know where to send the money. The deposit will fail, and you will have to contact the sender to correct it and resubmit. This can delay your payment by one or more pay cycles.
Always double-check the routing number before you give it out or enter it into a form. If you are unsure, contact your bank directly rather than guessing or using a number from memory.
When banks change routing numbers
Banks change routing numbers when they merge with another bank, when they restructure their branch system, or when they are acquired by a larger institution. The change is usually announced in advance through statements, email, or letters to customers. Your bank will tell you the old routing number and the new one, and when the switch happens.
During the transition period—which can last weeks or months—both routing numbers may work. However, you should update all your automatic payments, direct deposits, and recurring transfers to use the new routing number as soon as possible. Once the old routing number is deactivated, any transaction using it will fail.
If you have old checks printed with the old routing number, you can still use them during the transition, but it is safer to order new checks with the updated routing number. Contact your bank about reordering checks if you need them.
Routing numbers for different types of transfers
Some banks publish separate routing numbers for wire transfers, ACH transfers, and other payment types. This can make it look like one account has multiple routing numbers. However, you do not choose which routing number to use—the system that processes your transfer determines it based on the type of transaction.
For example, if you set up a wire transfer, the wire processing system will use the wire routing number automatically. If you set up an ACH transfer (like a direct deposit or bill payment), the ACH system will use the ACH routing number automatically. You simply provide your account number, and the receiving institution handles the rest.
If you are unsure which routing number to provide for a specific type of transfer, ask your bank. They can tell you which number to use, or they may tell you that one number works for all transaction types at your bank.
Frequently Asked Questions
Can I request a different routing number for my checking account?
No. The routing number is assigned by your bank based on the branch where your account is held. You cannot request a different one or customize it. If you want a different routing number, you would need to open an account at a different bank or a different branch of your current bank.
If I move to a different state, does my routing number change?
Not automatically. Your routing number is tied to the specific bank branch, not to your home address. If you move but keep your account at the same branch, the routing number stays the same. If you close that account and open a new one at a branch in your new state, the new account will have a different routing number.
What if my bank merged and I have checks with the old routing number?
You can still use old checks during the transition period, but contact your bank to find out when the old routing number will stop working. Order new checks with the updated routing number before that date. If you have automatic payments or direct deposits set up, update those to the new routing number right away.
Do I need a different routing number for online transfers versus in-person deposits?
No. The routing number is the same regardless of how you access your account or how you move money. Online transfers, in-person deposits, checks, and direct deposits all use the same routing number for your account.
How do I know if I have two accounts or two routing numbers for one account?
Log into your online banking and look at the accounts list. If you see two separate accounts listed (for example, "Checking" and "Savings"), you have two accounts, each with its own routing number. If you see only one checking account but two different routing numbers listed for it, call your bank to clarify—this is unusual and may indicate a data error or a recent merger.