CATHAY BANK Routing Number 122203950 — ROSEMEAD, CA

About Routing Number 122203950 — CATHAY BANK

Routing number 122203950 is the official 9-digit ABA routing number registered to CATHAY BANK at RS-14, ROSEMEAD, CA 91770. It is registered with the American Bankers Association and the Federal Reserve E-Payments Routing Directory. This number is used exclusively within the US domestic payment system — for ACH transfers, direct deposits, check processing, and domestic wire transfers routed through Fedwire. It cannot be used for international transfers, which require a SWIFT/BIC code.

How to Read Routing Number 122203950

The 9-digit number 122203950 is structured in three segments: 1222 is the Federal Reserve routing symbol — the first two digits identify the Federal Reserve district and the next two identify the specific Federal Reserve processing office handling CATHAY BANK's transactions. 0395 is the ABA institution identifier — four digits assigned by the American Bankers Association uniquely to CATHAY BANK. 0 is the check digit — a single digit calculated from the first eight digits using a weighted sum formula (3-7-1 multipliers). Payment processing systems run this calculation in real time to catch routing number entry errors before any funds move.

ACH, Direct Deposit, and Wire — When to Use 122203950

• Direct Deposit — Payroll and Government Payments: Provide routing number 122203950 and your account number to set up payroll direct deposit, IRS tax refunds, Social Security, VA benefits, or any recurring government payment.
• ACH Transfers — Bill Payments and Bank Transfers: Enter 122203950 when authorising electronic debits or credits — utility bills, insurance premiums, subscription services, or bank-to-bank transfers via NACHA's ACH network.
• Check Payments: This routing number is printed at the bottom-left of every CATHAY BANK personal check in ROSEMEAD — the first 9-digit sequence in the MICR line.
• Domestic Wire Transfers via Fedwire: Confirm with CATHAY BANK whether 122203950 applies to wires — many banks use a separate wire routing number. Fedwire settles same-day in real time.

What 122203950 Cannot Be Used For

• International wire transfers — require a SWIFT/BIC code. Find CATHAY BANK's SWIFT code at the SWIFT Code Lookup.
• Indian bank transfers (NEFT, RTGS, IMPS, UPI) — require an IFSC code. Use the IFSC Code Lookup.
• Cheque clearing in India — requires a MICR code. Use the MICR Code Lookup.

How to Verify Routing Number 122203950 Is Correct

Before using 122203950 for a large ACH or wire transfer, verify it three ways: (1) Check the bottom-left of a CATHAY BANK personal check — the routing number must match. (2) Log into CATHAY BANK online banking under Account Details. (3) Cross-check against the Federal Reserve routing directory. BankZop sources all routing data from official ABA and Federal Reserve records as of Jun 2026.

Browse more CATHAY BANK routing numbers in CA or across all states. For all US banks, visit the Routing Number Lookup. For international transfers, use the SWIFT Code Lookup. For loan EMI planning, try the EMI Calculator.