Bank Routing Number

California Business Bank Routing Number

The primary ABA routing number (RTN) for California Business Bank, Irvine, CA is shown below.

Primary ABA / RTN

122044119

Verify before you send money. This is the bank's primary registered routing number, taken from the FFIEC National Information Center institution record (last refreshed here on October 8, 2026). Banks often use a different routing number for wire transfers than for ACH, and large banks vary it by region; always confirm the correct number on a check or with your bank before initiating a transfer.

What is an ABA routing number?

An ABA routing number, also called a routing transit number (RTN), is a 9-digit code that identifies a U.S. financial institution in the payment system. It tells ACH transfers, Fedwire payments, and paper checks which bank to route money to. The format was created by the American Bankers Association in 1910 and is still the backbone of U.S. domestic payments.

What is the difference between a routing number and an account number?

Your routing number identifies the bank; your account number identifies your specific account at that bank. On a paper check, the routing number is the 9-digit number in the bottom-left, and the account number is to its right.

What is the California Business Bank routing number?

The California Business Bank routing number is 122044119. It is the primary ABA routing transit number registered to California Business Bank, headquartered in Irvine, CA. A bank can hold more than one routing number, so this is the one on record for the institution, not necessarily the one printed on every check. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 8, 2026.

What is the California Business Bank wire routing number?

This page lists 122044119, the primary routing number registered to California Business Bank. The record does not say whether the bank uses the same number for wire transfers, and many banks use a separate routing number for domestic wires. Confirm the wire routing number with California Business Bank before sending a wire.

Is ABA number 122044119 the routing number for California Business Bank?

Yes. ABA number 122044119 is the primary routing number registered to California Business Bank. Check it against the routing number on a check or in your online banking before sending an ACH payment, because a bank can use different numbers by region or product.

Which bank uses routing number 122044119?

Routing number 122044119 belongs to California Business Bank, headquartered in Irvine, CA. It is the bank's primary ABA routing number (FDIC certificate 58037).

Routing numbers in Irvine, CA

Bank: Commercial Bank of California: 122243596
Bank: Commercewest Bank: 122243334
Bank: Liberty Bank N.A.: 122243130
Bank: Bank Irvine: 122245387
Bank: Beach Cities Commercial Bank: 122245374

All routing numbers in California

View California Business Bank's full profile →

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Regulator records: FDIC BankFind (cert 58037) · FFIEC NIC profile (RSSD 3390337)