Description. About us. Ketel Thorstenson, LLP, is a full-service 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. Our mission is to i...
Description. Ketel Thorstenson, LLP is a full-service accounting firm serving the Black Hills region since 1936. With offices in Rapid City and Spearfish, SD, and Gillette and Casper, WY, our firm includes 20 partners and more than 50 CPAs serving clients across agriculture, construction, hospitality, estate planning, nonprofit, and government industries. Our mission is to inspire excellence in our people, clients, and communities by building mea...
