What a routing number is and why you need it for a wire transfer
A routing number is a nine-digit code that identifies which bank or credit union holds your account. When you send a wire transfer, the routing number tells the sending bank exactly where to direct your money. Without it, the wire cannot reach the right financial institution.
California banks and credit unions each have their own routing number, even if they have branches in multiple states. The routing number is specific to the bank itself, not to your individual account or branch location. You will see it printed on the bottom left of your checks, but you can also find it online or by calling your bank directly.
Key Takeaways
- Your routing number is a nine-digit code printed on the bottom left of your checks, and it identifies your specific bank or credit union.
- You can find your California bank's routing number through your online banking portal, by calling customer service, or by visiting your bank's website.
- The routing number is different from your account number — you need both pieces of information to complete a wire transfer.
- If you use a credit union instead of a bank, the routing number works the same way and is equally necessary for wire transfers.
Finding your routing number through online banking
Most California banks display your routing number in your online banking portal. Log in to your account and look for a section labeled "Account Details," "Account Information," or "Routing and Account Numbers." The routing number is usually shown alongside your account number.
If you cannot find it in the main account section, check under settings or documents. Some banks include the routing number on statements you can read. If your bank's website does not show it clearly, call the customer service number on the back of your debit card — they can read it to you over the phone in under a minute.
Checking your physical checks
If you have a checkbook, the routing number is printed on the bottom left of every check. It is the first set of nine digits, followed by your account number and then the check number on the right. The routing number will look like this: 121000248 (this is an example only — your actual number will be different).
This method works only if you have checks from your current account at your current bank. If you recently switched banks or opened a new account, your old checks will have a different routing number and should not be used for wire transfers.
Using your bank's website or customer service
Visit your bank's official website and search for "routing number" in the search bar. Most California banks have a dedicated page listing routing numbers for each branch or service type. Some banks use different routing numbers for different types of transactions, so make sure you are looking at the number for wire transfers specifically.
If you cannot find it online, call the customer service number listed on your bank's website or the back of your card. Have your account number ready. The representative will confirm your identity and provide your routing number. This usually takes less than five minutes.
Understanding routing numbers for credit unions
If your account is with a California credit union rather than a bank, the routing number works exactly the same way for wire transfers. Credit unions also have nine-digit routing numbers, and you can find yours through online banking, on your checks, or by calling the credit union's main line.
Some credit unions are part of shared branching networks or CO-OP networks, but this does not change your routing number. Use the routing number for your specific credit union, not for the network it belongs to. If you are unsure, call your credit union and ask for the routing number to use for outgoing wire transfers.
What to do if you cannot locate your routing number
If you have tried online banking and cannot find the number, and you do not have checks, call your bank or credit union directly. Have your account number and a form of identification ready. Customer service can provide the routing number when ready and can also confirm whether it is correct for wire transfers.
Do not guess or use a routing number from another bank's website. Using the wrong routing number will cause the wire transfer to fail or be sent to the wrong institution, and recovering the money can take several weeks. It is always worth the five-minute phone call to confirm you have the right number.
Routing number versus account number
It is straightforward to confuse these two, but they serve different purposes. Your routing number identifies your bank or credit union. Your account number identifies your specific account within that bank. For a wire transfer, you need both: the routing number tells the sending bank where to send the money, and the account number tells that bank which account to deposit it into.
On a check, the routing number comes first (nine digits on the left), then your account number (usually 10 to 12 digits in the middle). When you set up a wire transfer, you will be asked for both pieces of information separately, so have them both ready before you start.
Frequently Asked Questions
Do I need a different routing number for each type of wire transfer?
Most California banks use the same routing number for all outgoing wire transfers. However, some larger banks may have different routing numbers for domestic versus international wires. Call your bank to confirm which routing number to use for your specific transfer type.
Can I use the routing number from my old bank if I recently switched?
No. If you switched banks, you must use the routing number for your new bank. Using an old routing number will send the wire to the wrong institution. If you are unsure which bank your account is currently with, check your most recent statement or log into your current online banking portal.
What if my bank has multiple branches in California?
The routing number is the same for all branches of the same bank. You do not need a different routing number based on which branch you use or which branch is closest to you. The routing number identifies the bank itself, not the individual location.
Is the routing number the same for checking and savings accounts?
Yes. Both your checking and savings accounts at the same bank share the same routing number. The account number is what distinguishes between them. When you wire money, the routing number and account number together direct the funds to the correct account type.