Columbia Banking System Routing Number: Umpqua Merger Guide

What is the Columbia Banking System routing number?

Columbia Banking System uses routing number 125008013. Columbia Banking System was a bank holding company headquartered in Tacoma, Washington, that merged with Umpqua Holdings Corporation in 2023 to create one of the largest community banks on the West Coast.

Following the merger, the combined institution operates under the Columbia Banking System name with Umpqua Bank as its primary banking subsidiary. Accounts originally with Columbia Bank may still use routing number 125008013.

How to find your Columbia Banking routing number

Log into your online banking portal to verify your current routing number. During the merger with Umpqua, some accounts may have transitioned to a new routing number. Check your account details for the most current information.

The routing number is also printed on Columbia Bank checks. If you have questions about whether your routing number has changed, contact Columbia/Umpqua customer service for confirmation.

Columbia Banking merger with Umpqua

Columbia Banking System and Umpqua Holdings completed their merger of equals in 2023, creating a combined institution with approximately $50 billion in assets and over 300 branches across the western United States.

The combined bank operates under Columbia Banking System as the holding company, with Umpqua Bank serving as the primary banking brand. The merger expanded the geographic footprint across Oregon, Washington, California, Idaho, and Nevada.

Columbia Banking wire and ACH transfers

Columbia Bank supports ACH and wire transfers for personal and business accounts. Verify your routing number (125008013 or the updated Umpqua routing number) before initiating transfers to ensure correct processing.

Domestic and international wire transfers are available through the online banking platform or by visiting a branch. ACH transfers for direct deposit, bill pay, and account transfers follow standard banking timelines.

Business banking with Slash

Columbia Banking System provides traditional commercial banking across the Pacific Northwest. For businesses that want a modern digital banking experience, Slash offers unlimited virtual cards, up to 2% cashback, automated expense management, and full ACH and wire support.

While Columbia Bank excels at community banking relationships, Slash provides a nationwide digital platform with real-time spend tracking, multi-entity management, and native accounting integrations for growing businesses.