Banner Corporation operates as the bank holding company for Banner Bank that provide commercial banking and financial products and services to individuals, businesses, and public sector entities in the United States.

It accepts various deposit instruments, including interest-bearing and non-interest-bearing checking accounts, money market deposit accounts, regular savings accounts, and certificates of deposit, as well as treasury management services and retirement savings plans.

The company also provides commercial real estate loans, including owner-occupied, investment properties, and multifamily residential real estate loans; construction, land, and land development loans; residential mortgage loans; commercial business loans; agricultural loans; and consumer and other loans, such as home equity lines of credit, automobile, and boat and recreational vehicle loans, as well as loans secured by deposit accounts.

In addition, it engages in the mortgage banking operations through the origination and sale of one-to four-family and multi-family residential loans, as well as small business administration loans.

Further, the company provides electronic and digital banking services.

As of December 31, 2021, it operated 150 branch offices and 18 loan production offices located in Washington, Oregon, California, Idaho, and Utah.

Banner Corporation was founded in 1890 and is headquartered in Walla Walla, Washington.