Looking for an experienced chartered accountant? Below we’ve compiled a list of top accounting firms in South Dakota. 1. Ketel Thorstenson, LLP. Original founded way back in 1936, Ketel Thorstenson is an accounting firm in Rapid City, SD. They specialize in helping small businesses and individuals get their financial house in order. With a friendly and helpful … [Read more...] about 10 Top Accounting Firms in South Dakota