William Mayer, CPA



Bill Mayer’s Areas of Expertise

  • Income Tax Services
  • Trust and Estate Planning
  • Accounting Services
  • Consulting


Bill Mayer, CPA, Partner, concentrates his practice on advising high net worth individuals, closely-held businesses and their owners, new business start-ups, and professional services and construction firms. He also counsels individuals, fiduciaries and executors on trust, gift and estate matters. He is passionate about his clients receiving quality service in a timely manner.


  • American Institute of Certified Public Accountants (AICPA)
  • Wisconsin Institute of Certified Public Accountants (WICPA)
  • Mequon-Thiensville Chamber of Commerce
  • Milwaukee Estate Planning Forum Member

Volunteer Work

  • Corporate Casual, Inc., Board Member and Treasurer
  • Milwaukee Jewish Home and Care Center, Board Member and Treasurer
  • Wisconsin Institute of CPAs Wisconsin Tax Committee Member
  • American Institute of CPAs Tax Section Member


Bachelor of Business Administration in Accounting and Marketing, University of Wisconsin-Madison


Certified Public Accountant (CPA)

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“I want the process to be easy for my clients. I can come to your workplace, or even make house calls.”

William Mayer, CPA • Partner