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Aaron W. Worthman

Partner, CPA
512 975 7281

Aaron Worthman, partner on the energy and utilities team, has been with Baker Tilly Virchow Krause, LLP since 1998. He specializes in serving municipal utilities and joint action agencies. His experience includes performing financial audits and agreed-upon procedure reviews as well as preparing rate studies, cost of service studies, rate design and financial forecasts.


  • Manages financial audits of numerous municipal electric, water, sewer and stormwater utilities as well as joint action agencies
  • Provides OMB Uniform Guidance compliance audits of federally funded programs
  • Reviews and tests internal controls of the administration of grant programs
  • Analyzes the financial impact of construction projects on utility customer rates, borrowing needs and operational results
  • Prepares electric, water, sewer and stormwater rate filings, cost of service studies and rate design
  • Testifies as an expert witness before regulating agencies and local governing bodies to support utility rate adjustments
  • Prepares annual budgets and long-range financial forecasts for municipal utilities
  • Assists with retail utility service agreement negotiations related to large industrial developments and intergovernmental agreements


  • American Institute of Certified Public Accountants (AICPA)
  • Wisconsin Institute of Certified Public Accountants (WICPA)
  • Texas Public Power Association
  • Texas Society of Certified Public Accountants

Thought Leadership

  • Instructor for the American Public Power Association’s (APPA) Utility Education courses
  • Speaks on accounting and financial reporting topics at national and regional conferences as well as at Baker Tilly sponsored seminars
  • Authors nationally and regionally published articles on utility regulation and accounting issues
  • Contributing author in the APPA Advanced Accounting Manual


University of Wisconsin ‒ Eau Claire
Bachelor of Business Administration

Continuing Education

  • Baker Tilly Utility Re-Engineering Audit Update
  • AICPA National Governmental and Not-for-Profit Training Session
  • WRWA ‒ The Business of Running Your Utility
  • Baker Tilly Electric Cost of Service and Rate Design
  • WICPA Governmental Financial Management Update
  • Baker Tilly Utility Training Seminar
  • Numerous single audit training sessions