Established in 1923, Nelson & Nelson CPA’s is South Dakota's oldest homegrown CPA firm, located in Sioux Falls, SD. Trusted with the Midwest's accounting need for more than 95 years. We offer bookkeeping, tax advice, payroll service, retirement planning, tax planning, estate and trust accounting, non-profit services, and of course tax returns for individuals and businesses. Three generation of Nelson CPA’s are currently serving clients. Wesley Nelson joined his dad James in 1957 after he came home from the Korean War, his son Chuck followed in 1983. Chuck’s daughter Jillian, the fourth generation, has been with Nelson & Nelson CPA’s since 2013. Call us to set up a free initial consultation at 605 336 1988.