Exceptional People. Innovative Ideas. successful Clients. 
Keith G. Brinkmann CPA

Keith G. Brinkmann, CPA

Principal  |  Columbia  |  Belleville


keith.brinkmann@scheffelboyle.com  |  618.281.7605  |  618.277.8100


Areas of Expertise

  • Audit & Assurance
  • Accounting Practices
  • Tax Planning & Preparation
  • GASB 34 Implementation/Reporting

Specialty Industries

  • Financial Institutions
  • Construction Companies
  • Governmental Entities
Education & Certifications
  • B.S.B.A., Accounting, St. Louis University, 1981
  • Certified Public Accountant (CPA), 1982



Secret to Success: "Walk in someone else’s shoes and then ask yourself: what positive contribution can I make?"



Keith is a Principal and works out of both the Belleville and Columbia offices. With over 32 years of public accounting experience, he serves as an audit leader/partner on audit engagements where he performs all facets of the audit, including preparation of financial statements, reports, and findings letters.


Keith undergoes continuing education with the firm and meets the requirements of the AICPA and Government Auditing Standards. Keith’s experience with GASB 34 implementation and reporting requirements has been crucial during the audit engagements of municipal entities in Illinois.


Keith grew up in Waterloo and still lives there today with his wife, Kerry, and two children. When asked why he comes to work every day, Keith says he loves “having a trusting relationship with people and trying to help them in any way possible.” He goes on to say that he likes being part of the team at Scheffel Boyle because he’s able to provide his clients with access to hundreds of years of combined financial industry experience from his colleagues, which improves the overall level of service he can offer.



Community Involvement, Past & Present

  • Greater Belleville Chamber of Commerce, Member
  • Waterloo Optimist Club, Member

Professional Organizations

  • American Institute of Certified Public Accountants (AICPA)
  • Illinois CPA Society (ILCPAS)


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Dennis E. Ulrich Michael E. Fitzgerald Steven C. Pembrook Steven P. Langendorf Scott A. Weber Mark E. Glueck Russell E. Gregson Brian A. Otten
Henry C. Siekmann Richard E. Reno Dean S. Salvatore Annette M. Hipkiss Mark J. Korte Kimberly S. Loy Keith G. Brinkmann Dale B. Holtmann