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Jonathan Guenthner, CPA

Partner | Practice Leader, Agribusiness

Mitchell Office

1820 N Sanborn Blvd, PO Box 249 

Mitchell, SD 57301

Phone: 605-996-7717
Fax: 605-996-4091

  • Agri-Business Taxation & Consultation

  • Estate & Succession Planning

  • Not-for-Profit Taxation

  • Trust & Estate Taxation

  • Individual Taxation

  • Entity Taxation

  • Agri-Business Taxation & Consultation

  • Agri-Business Estate & Succession Planning

  • Not-for-Profit Taxation


As a Partner and leader of our Agribusiness practice, Jonathan Guenthner manages all things agriculture for the firm. Jonathan is also the leader of our Chamberlain office. He provides tax and technical services for individuals, S-corporations, partnerships and other entities, primarily in the agricultural field to ELO clients. He also provides consultation for clients in estate and succession planning.


B.S., Business Administration, Accounting – University of South Dakota, Vermillion, SD

M.P.A., Professional Accountancy - University of South Dakota, Vermillion, SD

Certifications and Licensures

Certified Public Accountant (CPA)

"I wanted to find a way to help out more farms."

Growing up on the family farm taught me many things from perseverance to hard work. While I loved the farm and love helping out on the farm, I wanted to find a way to help out more farms, so I became a CPA and began working in the area of agri-business taxation. My farm upbringing allows me to speak with farmers and ranchers and understand their operations. Seeing my family farm and neighboring farms transition, gives me an understanding and passion for helping family farmers and ranchers to continue on to the next generation. 


Being able to help farmers and agri-business owners understand the processes, tax consequences, and the tools to pass their farm and ranch on to the next generation is my greatest goal and achievement. 



  • South Dakota Certified Public Accountants (SDCPA)

  • American Institute of Certified Public Accountants (AICPA)

  • Mitchell Technical Institute, Farm Ranch Management Advisory Board

  • Mitchell Area Chamber of Commerce, Member Services Committee

  • Mitchell Area Safehouse, Inc, Past President

  • Mitchell Skating & Hockey Association, Programs Committee

  • Junior Achievement Volunteer

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