Partners, principals and associates

Keller_Bill Lincolnshire

100 Tri-State International
Lincolnshire, IL 60069




William S. Keller, CPA, MBA

Senior Manager

Bill Keller is a senior manager in Wipfli LLP’s business advisory services practice.  He has more than 25 years of experience in providing accounting, consulting, auditing, and tax services to clients in many industries including professional services, real estate, wholesale, and nonprofit.  Bill specializes in the area of affordable multifamily housing, having worked on more than 100 low-income housing tax credits over the past 20 years.  He currently works with a number of housing agencies on low-income housing projects.  Bill also works with clients and their professional advisors on the development of buy-sell agreements, pension and profit sharing plans, and sales and purchases of businesses.

  • Certified Public Accountant
  • Master of Business Administration
Professional Memberships and Activities
  • American Institute of Certified Public Accountants (AICPA) - Member
  • Illinois CPA Society (ICPAS) - Member


Audit and Accounting Tax

Areas of Focus

  • Real estate accounting and consulting, especially in the area of affordable multifamily housing (including HUD audits)
  • Tax planning and projections
  • Review of corporate transactions including buy-sell agreements and mergers and acquisitions


University of Illinois at Urbana-Champaign, College of Business at Illinois
  • Bachelor of science degree in accountancy
Loyola University Chicago
  • Master of business administration degree in finance