Ketel Thorstenson
529 Kansas City St # 100
Rapid City, SD 57701 Map
Phone: (605) 342-9345

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Our Mission

To inspire excellence in our people, clients, and communities by building meaningful relationships through progressive thinking, collaboration, and passion.

Ketel Thorstenson, LLP, is a full-service, independent accounting firm rich in history, serving clients in the Black Hills region since 1936. Currently, we have 22 partners and over 50 CPAs, with offices in Rapid City and Spearfish, SD, and Gillette, WY. The firm offers a variety of accounting services, specializing in the agricultural, construction, hospitality, estate planning, nonprofit, and government industries.

We account.
We advise.
You achieve.

Our knowledgeable CPAs, EAs, and accountants take the time to get to know you, your family, and your business before working with you on a comprehensive plan.

We will help you navigate the complexities of our financial systems, turn your strengths into advantages, and help you meet your personal and business goals.