Our Firm

RK Building close upWe combine the experience of a large firm with the personal attention that only a small firm can provide. Our clients come back to us year after year because they know they are in good hands. We work to develop long-term relationships; whether your needs are simple or complex, we can help.

Please take a moment and read more about our peopleour historyour credentials, and our areas of specialization. If you have any questions or would like more detailed information about how we can help you, don't hesitate to contact us. We would be happy to serve you.

Our People

Roger Klosterman, CPA, PFS, Managing Partner

Kathleen Klosterman, Firm Administrator/Partner

Nancy Stone-Brant, Tax Supervisor

Maria Mormann, Accountant

David R. Demmer III, Accountant




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Our History

Founded in 1997, Roger Klosterman, PC, Certified Public Accountants, has evolved from a sole proprietorship into a partnership now under the name Roger Klosterman & Co, LLP. Located in Dubuque, Iowa, we proudly serve clients throughout Iowa, Illinois, Wisconsin, and many other surrounding states. As we have grown, so have our clients. By serving a variety of entities, we have experience with issues that both businesses and individuals encounter at different stages of growth. Entities included in our clientele are: retail stores, restaurants, schools, manufacturers, small to mid-size businesses and most importantly, individuals and their families.

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Our Credentials








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Our Areas of Specialization

  • Individual and Corporate Taxation
  • Ministry Taxation and Planning
  • Business Consulting
  • Business Bookkeeping
  • Business Payroll Services
  • QuickBooks Consulting
  • Financial Statement Preparation
  • Personal Financial Planning
  • Business Valuation
  • Estate Planning
  • Litigation Support

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Roger Klosterman & Co, LLP

3255 Foothill Court
Dubuque, IA 52001

Tel: 563.556.3730
Fax: 563.556.3771
Email: kklos@rk-cpa.com

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