Washington Mutual (WaMu) Routing Number: Post-Failure Guide

What is the Washington Mutual routing number?

Washington Mutual (commonly known as WaMu) used routing number 325070760 for its Washington state-based accounts before its collapse in September 2008. WaMu was the largest savings and loan association in the United States and its failure remains the largest bank failure in American history by assets.

The Office of Thrift Supervision seized Washington Mutual on September 25, 2008, and the FDIC facilitated the sale of its banking operations to JPMorgan Chase for $1.9 billion. Chase assumed all of WaMu's deposits, branches, and banking operations.

Chase acquisition of Washington Mutual

JPMorgan Chase rapidly integrated Washington Mutual's operations following the 2008 acquisition. WaMu branches were rebranded as Chase, and customer accounts were migrated to the Chase banking system. The transition brought Chase a significant retail banking presence on the West Coast.

Since the conversion happened over 15 years ago, virtually all former WaMu routing numbers have been fully replaced with Chase routing numbers. The legacy routing number 325070760 is no longer in active use for banking transactions.

How to find your current Chase routing number

If you were a Washington Mutual customer, your account has long since been converted to a Chase account with a Chase routing number. Log into chase.com or the Chase mobile app to view your current routing and account details.

Chase uses state-specific routing numbers. Common examples include 325070760 (which Chase may have retained for Washington state) and 322271627 (California). Always verify your specific routing number through Chase's online banking or by checking a recent Chase check.

WaMu's legacy and modern banking

Washington Mutual's collapse was a defining moment of the 2008 financial crisis, driven by heavy exposure to subprime mortgages. The failure wiped out shareholders and led to significant regulatory changes in the banking industry.

The WaMu failure demonstrated the risks of concentrated lending strategies and inadequate risk management. Modern banking regulations, including the Dodd-Frank Act, were enacted in part to prevent similar failures.

Forward-looking business banking with Slash

The WaMu collapse is a reminder that banking stability matters. Slash offers businesses a modern, reliable banking platform with FDIC-insured accounts, full ACH and wire transfer support, unlimited virtual cards, and real-time financial tracking.

Slash is built for businesses that need dependable infrastructure. With up to 2% cashback, automated expense management, multi-entity support, and native accounting integrations, Slash helps businesses build on a solid financial foundation.