EAST WEST BANK Routing Number 122240418 — ALHAMBRA, CA
The ABA routing number 122240418 belongs to EAST WEST BANK in ALHAMBRA, CA. Use for ACH transfers, direct deposits, and check payments.
EAST WEST BANK
ALHAMBRA, CA 91801
ABA Routing Number
122240418
Routing Number Breakdown
About Routing Number 122240418 — EAST WEST BANK
Routing number 122240418 is the official 9-digit ABA routing number registered to EAST WEST BANK at 1881 WEST MAIN STREET, ALHAMBRA, CA 91801. 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 122240418
The 9-digit number 122240418 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 EAST WEST BANK's transactions. 4041 is the ABA institution identifier — four digits assigned by the American Bankers Association uniquely to EAST WEST BANK. 8 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 122240418
- Direct Deposit — Payroll and Government Payments: Provide routing number 122240418 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 122240418 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 EAST WEST BANK personal check in ALHAMBRA — the first 9-digit sequence in the MICR line.
- Domestic Wire Transfers via Fedwire: Confirm with EAST WEST BANK whether 122240418 applies to wires — many banks use a separate wire routing number. Fedwire settles same-day in real time.
What 122240418 Cannot Be Used For
- International wire transfers — require a SWIFT/BIC code. Find EAST WEST 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 122240418 Is Correct
Before using 122240418 for a large ACH or wire transfer, verify it three ways: (1) Check the bottom-left of a EAST WEST BANK personal check — the routing number must match. (2) Log into EAST WEST 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 EAST WEST 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.
Data sourced from the American Bankers Association (ABA) and the Federal Reserve E-Payments Routing Directory. Last reviewed Jun 2026 by BankZop Editorial Team.
Frequently Asked Questions — Routing Number 122240418
- Direct deposit — payroll, IRS tax refunds, Social Security, VA benefits to a EAST WEST BANK account
- ACH transfers — online bill payments, electronic debits, bank-to-bank transfers
- Check payments — this routing number is printed at the bottom-left of every EAST WEST BANK personal check
- ACH debit authorisations — recurring payments to utilities, subscriptions, and insurance providers
