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Hammar & Associates Joins Centennial Tax & Accounting

December 31, 2021

Hammar & Associates (“Hammar”) and Centennial Tax & Accounting (“Centennial”) have merged. The partnership brings together two like-minded, growing local firms to expand their capabilities and combine resources in order to connect clients to financial opportunities through their trusted advice and service.

“We are excited to work alongside Tom Hammar, Molly Shattuck and the entire Hammar team as they join Centennial Tax & Accounting,” stated Adam Pelzer, executive vice president at Northwest Bank & Trust and an executive at Centennial. “This partnership means a lot to Centennial. Hammar has been a leading firm in area and will immediately enhance our expertise in payroll, accounting and advisory services.  We are pleased to continue our commitment to grow our capabilities in the Quad Cities and create a home for local accounting firms and their people. ”

“We couldn’t be more excited to join together with Centennial,” stated Tom Hammar, now Lead Director for Centennial Tax & Accounting. “During our conversations, it was clear we were aligned in our shared values and our passion for providing the best solutions and service to our clients. I strongly feel our clients and our people will benefit for years to come. Centennial is growing something here locally that is quite extraordinary in the accounting and tax space. The current landscape calls for some new approaches and Centennial is on pace to be of a size that will better be able to attract the best talent available. The human capital component is essential to thriving going forward. We have learned a few things through the years that we can bring to the table as well so we truly will be stronger as a combined firm than as two separate companies.”

Centennial Tax & Accounting will now have over 40 local professionals with over 600 years of combined expertise in tax, accounting, payroll, and advisory services for individuals, not-for-profits and small businesses in the Quad Cities. The addition of Hammar’s Rock Island office will expand the firm’s presence to both sides of the Quad Cities in addition to Centennial’s offices at the Northwest Bank NorthPark Tower in Davenport.  The merger closed on October 31, 2022 and Hammar has officially adopted the Centennial name and brand.  The combination of the two businesses is supported by the investment of Centennial’s parent company, Northwest Bank & Trust Company.

About Centennial Tax & Accounting:

Centennial Tax & Accounting provides a full range of tax, accounting, payroll and advisory services designed to help clients make smart financial decisions. Centennial was formed through partnerships that bring local practices together with the shared mission to find the best solutions to address clients’ unique needs with a relationship-first approach. Centennial’s legacy of trusted advice spans over 50 years and its growing team consists of 40 local professionals with over 600 years of combined experience serving customers with roots in the Quad Cities.

For more information, visit


About Northwest Bank & Trust Company:

Northwest Bank & Trust Company is a family-led community bank that has served the Quad Cities for over 80 years. The bank offers a full suite of banking products and services through its team of local banking experts. Northwest Bank & Trust Company provides tailored advice throughout all phases of life and continues to expand the ways they serve their customers. Northwest Bank & Trust’s Investment Management Group has assisted clients with trust, investment and estate planning services for over 50 years. The bank is also a top banking software provider that supports the operations of community banks and credit unions nationwide. In 2019, Northwest Bank & Trust Company expanded is financial service offerings through its investment subsidiary, Centennial Tax & Accounting, which provides tax and accounting services to thousands of individuals, small businesses, and entrepreneurs.

For further information, visit

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