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Our Firm

3 generation of Nelson and Nelson CPA's

Three generations of Nelson CPA's - Jillian Nelson, Charles "Chuck" Nelson, and Wesley "Wes" Nelson

Our Firm

Established in 1923, Nelson & Nelson, CPA's is devoted to helping our clients succeed and reach their financial goals.

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. (Read more about our services here).

Nelson & Nelson, CPA's is located in Sioux Falls, South Dakota, and has clients in more than 30 states and many foreign countries. We maintain our standards of personal service by building genuine long-term relationships with clients. This individualized attention keeps our clients coming back.

Our History

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. 

Three generation of Nelson CPA’s are currently serving clients. Wesley "Wes" Nelson graduated from the University of South Dakota (USD) and joined his dad James in 1957 after he came home from the Korean War, his son Charles "Chuck" Nelson is also a graduate from USD and is with the firm since 1983. Chuck’s daughter Jillian joined in 2013 She received her Bachelor from USD and her Master in Business from South Dakota State University (SDSU). She became a Certified Public Accountant in 2018 making her the fourth generation of Nelson CPA's.

Wes, Chuck, and Jillian have upheld the integrity and personal service that James established for the firm more than 95 years ago.

Wes Nelson and his Father and founder of Nelson and Nelson CPA's James Chuck Nelson and his father Wesley Nelson

James Nelson, founder of Nelson & Nelson CPA's, his son Wesley and Chuck Nelson with his father Wes

Meet our Team

Please click here to learn about our dedicated team members.


American Institute of CPA's (AICPA), South Dakota CPA Society, South Dakota Estate Planning Council, AICPA Tax Section, National Association of Tax Professionals, National Society of Tax Professionals, Siouxland Chapter of the American Payroll Association, Accountants World, Sioux Falls Chamber of Commerce, and Air Force Association.

We take care of your books for you, so you can get back to the job of running your business and generating profits.
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We offer payroll solutions that meet your business's needs and enable you to spend time doing what you do best--running your company.
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We offer a variety of services to help make sure that you are taking full advantage of Quickbooks' many features.
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We're here to help you resolve your tax problems and put an end to the misery that the IRS can put you through.
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We offer one-on-one guidance and a comprehensive financial plan that helps manage risk, improve performance, and ensure the growth and longevity of your wealth.
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© Nelson & Nelson CPAs LLP 2021